ERW Pipe (Electric Resistance Weld)

Standard: A53

ERW is produced from individual sheets or continuously from rolls of skelp. ERW is cold formed into a cylinder shape rather than hot formed. Coils of steel are formed by rollers and arc-welded electrically. The seam is then annealed chemically, or post-production via blast furnace, to reduce martensite in weld. An electric current rather than a flame is used to heat the edges of the strip for the fusion weld. ERW is primarily used for gas, water, steam and oil service. Available in 21’ lengths, single random, and double random.

SMLS Pipe (Seamless Pipe)

Standard: A106 and A53

A solid billet of steel is rotated while a mandrel shapes an interior hole in it, creating pipe. Seamless pipe is widely used in construction, oil refining, and chemical and petro-chemical industries. Seamless pipe is primarily used for gas, water, steam and oil service. Available in single random and double random lengths.

CW Pipe (Continuous Weld)

Standard: A53

Heated scalp is pulled through forming rolls and butted together forming a melted seam. No metal is added in the operation. The final rolls reduce the diameter and wall thickness to bring the pipe to it’s finished dimensions. CW pipe is commonly used for water, air, gas, and Steam. CW pipe is generally the lowest cost steel piping material. Available in 21 footers and single random lengths.

DSAW Pipe (Double Submerged Arc Weld)

Standard: API 5L

Steel plate is rolled into a pipe-shape then welded both, from the inside and outside. The welding arc is submerged in flux throughout the process, giving the pipe it’s name. Both inside and outside welds are required and usually performed in separate processes, hence the word “double”. DSAW pipe may not be cold expanded. Produced in double random lengths with square ends or beveled ends for welding. Used in high pressure gas and oil lines.

Plain End

Pipe with ends cut perpendicular to its axis and incorporating no grooves or threads on either end. This would be the choice for small sizes where socket weld fittings will be used to join pipe to pipe or pipe to fittings. This is also the default end prep for smaller (2” and smaller) if no end prep is specified. Generally be used for the smaller diameters pipe systems and in combination with slip on flanges and socket weld fittings and flanges. Pipe that has a plain end can be cut, threaded, beveled, welded, grooved or pressed in the field or in a fabrication facility as needed.

Beveled End

Standard: ANSI B16.5

Pipe beveling is the process by which a plain, square end of a length of pipe is machined down to an angle of 37.5 degrees. Beveling of pipe or tubing is most commonly used to prepare the ends for welding.  It can also be used for deburring the cut ends for safety and aesthetic reasons.

Threaded End

Standard: ANSI B1.20.1, NPT

Circular threads are cut into each end of the pipe using a series of devices called threading dies, which leave the ends of pipe with an NPT male thread. This is a “tapered thread”, allowing female thread connections or fittings to be screwed onto it.

Grooved

Standard: ASTM F1476

Roll grooved pipe is created by cold forming a groove by the action of an upper male roll being forced into a pipe as it is rotated by a lower female drive roll. Roll grooved configuration has rounded edges which reduces the available pipe end movement. Roll grooving of pipe removes no metal. Grooved fittings and coupling are then used to connect the pipe to other pipe, fittings and valves.

Cut Groove

Standard: ASTM F1476

A groove that is cut into the outside diameter of pipe or fitting near the end. Cut grooving involves the removal of 1/3 of the total pipe wall thickness to provide the lip that engages the coupling housing. Cutting a groove removes less material, to less depth, than threading the pipe. Cut grooving can be completed manually or by using large motorized shop tools. The advent of roll grooving has rendered cut grooving nearly obsolete in general HVAC use.

Coal-Tar Epoxy

Coal-Tar Epoxy is a 100% solids coating designed to offer corrosion, moisture and cathodic protection. Coal-Tar Epoxy, noted for its dark black color and tar odor, will typically bond to mill lacquer. This epoxy features the superior water resistance of coat tar epoxies and has the mild “tar” odor and is black in color. Provides excellent chemical resistance and low viscosity. Surface-prep for this coating is less than that of other coatings and it can be field-applied.

Fusion Bond

Fusion-bond is an epoxy based powder coating that is widely used to protect steel pipe used in pipeline construction, concrete reinforcing rebar and on a wide variety of piping connections, valves etc. from corrosion. It is a fairly inexpensive system and is easy to use in the field. Repairs to the coating can be made very easily and coating of the field joints is simple as well. Fusion bond is widely used and is considered a standard coating for many underground applications.

Galvanized

Pipe galvanizing is the hot-dip process of chemically cleaning, and metallurgical bonding of a zinc coating to the outside and inside of pipe. The weight of the zinc coating must be no less than 1.6 oz per square foot.

Mill Lacquer

Mill lacquer is an oil, alkyd, or water based coating that offers minimal protection to the outside of carbon steel pipe during transportation and storage. Mill lacquer is often tinted a dark color. Mill lacquer is the default pipe coating if no other coating is specified.


Select Nominal pipe size


Legend

OD = Outside Diameter of Pipe (inches)
WT = Wall thickness (inches)
ID = Inside Diameter of Pipe (inches)
WP = Working pressure (PSI or Pounds per Square Inch)
V = Volume of Water in 1 foot of pipe (gallons)
W = Weight of pipe per foot (lb/ft)
Ww - Weight of pipe per foot when filled with water (lb=ft)

Notes

  • Pipe dimensions are according to ASME B36.10M -Welded and Seamless Wrouth Steel Pipe
  • Pressure Ratings or Working Pressure (WP) values are based on ASTM A53 Grade B or A106 Grade B Seamless ANSI B31.3, 1977. Allowances for connections and fittings reduce these working pressures by approximately 25%. The allowable working pressures were calculated by the formula in the code for Pressure Piping, ASA B31.1-1955, Section 3, paragraph 324(a).

 

P =25(t-C)
D-2y(t-C)


Where

P = allowable pressure in pounds per square inch (gauge).
D = Outside diameter in inches
t = design thickness in inches, or 12.5% less than the nominal thickness shown in the Properties screen.
C = allowance in inches for corrosion and/or mechanical strength (C=0.05" has been used for all pipe sizes).
Y = a coefficient having values for ferritic steels as follows:

  • 0.4 up to and including 900 degrees Fahrenheit
  • 0.5 for 950 degrees Fahrenheit
  • 0.7 for 1000 degrees Fahrenheit
SMLS
INGREDIENTS MAX %
Carbon 0.30
Manganese 0.29 – 1.06
Phosphorus 0.035
Sulfur 0.035
Silicon 0.10
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ERW
INGREDIENTS MAX %
Carbon 0.30
Manganese 1.20
Phosphorus 0.05
Sulfur 0.045
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CW
Ingredients Max %
Carbon 0.3
Manganese 1.20
Phosphorus 0.05
Sulfur 0.045
Copper 0.40
Nickel 0.40
Chromium 0.40
Molybdenum 0.15
Vanadium 0.08
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Alloy Steel

Steel which owes its distinctive properties to elements other than carbon.

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Annealing

Consists of heating the steel either in or near it’s critical temperature range followed by an extended slow furnace cool.

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Bevel

Refers to an edge of a structure that is not perpendicular to the faces of the piece. The angle or inclination of a line or surface that meets another at any angle but 90. Standard is 30 degrees to facilitate welding.

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Billett

Round solid bar of steel which is pierced to form a seamless tube or pipe.

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Black Pipe

Denotes lacquered OD finish (instead of bare or galvanized).

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Butt Joint

Joint between two members aligned approximately in the same plane.

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Butt Weld

Circumferential weld in pipe fusing the adjoining pipe walls completely from inside wall to outside wall.

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Carbon Steel (CS)

Steel which owes its distinctive properties chiefly to the various percentages of carbon. Strong and durable nearly always the cheaper natural choice of pipe.

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Coating

Process of covering steel with another material, primarily for corrosion resistance.

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Continuous Weld (CW)

A method of producing small diameter pipe. A phrase for continuous butt-weld.

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Corrosion

Gradual destruction or alteration of a metal or alloy caused by direct chemical attack or by electrochemical reaction.

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Double Random Length (DRL)

Pipe with a 35-foot average length.

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Electric Resistance Weld (ERW)

Most common form of manufacture of pipe.

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Erosion

Gradual destruction of metal or other material by the abrasive action of liquids, gases, solids or mixtures of all.

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Flux

Fusible mineral material which is melted by the welding arc. Fluxes may be granular or solid coatings. Fluxes serve to stabilize the welding arc, shield all or part of the molten weld pool from the atmosphere, and may or may not evolve shielding gas by decomposition.

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Fusion

Melting together of filler metal and base metal, or of base metal only, which results in coalescence.

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Galvanized (GALV)

Covering of iron or steel with a protective layer of zinc.

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Grade

Term designates divisions within different types based on chemical or mechanical properties.

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Lap Joint

Joint between two overlapping members.

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Martensite

Most commonly refers to a very hard form of steel crystalline structure.

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Nominal (NOM)

Pipe size or wall thickness as specified (not actual). Sizes refer to the approximate ID, even though OD is the fixed dimension.

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Nominal Pipe Size (NPS)

North American set of standard sizes for pipes used for high or low pressures and temperatures. The name NPS is based on the earlier “Iron Pipe Size” (IPS) system.

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Pass

Single progression of a welding or surface operation along a joint, weld deposit, or substrate.

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Pipe

A tube of metal, plastic, or other material used to convey water, gas, oil, or other fluid substances.

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Single Random Length (SRL)

Pipe with a 17.5-foot minimum average length.

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Standard (STD)

Reference to wall thickness of pipe such as schedule 40.

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Skelp

Plate of steel or wrought iron from which pipe or tubing is made by rolling the skelp into shape longitudinally and welding or riveting the edges together.

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Strain

Change of shape or size of a body produced by the action of a stress.

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Stress

Intensity of the internal, distributed forces which resist a change in the form of a body. When external forces act on a body they are resisted by reactions within the body which are termed stressed.

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Volume of Pipe

Measurement of the space within the walls of the pipe.

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Welding

Process of joining materials by heating until they are fused together, or by heating and applying pressure until there is a plastic joining action. Filler metal may not be used.

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Welded Pipe

A tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.

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Yield Strength

Stress at which a material exhibits a specified limiting permanent set.

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ANSI

American National Standards Institute

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API

American Petroleum Institute

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ASA

American Standard Association, now ANSI.

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ASTM

American Society of Mechanical Engineers

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AWS

American Welding Society

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AWWA

American Water Works Association

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B.E.

Beveled End

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BW

Butt Weld pipe

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CI

Cast Iron

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CS

Carbon Steel

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CW

Continuous Weld

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DIA

Diameter

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DRL

Double Random Length

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DSAW

Double Submerged Arc Weld

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ERW

Electric Resistance Weld

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FPT

Female Pipe Threads

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GALV

Galvanized

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I.D.

Inside Diameter of pipe

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IPS

Iron Pipe Size

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LR

Long Radius

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MPT

Male Pipe Thread

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O.D.

Outside Diameter of pipe

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PE

Plain End of pipe

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PSI

Pounds per Square Inch

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PSIG

Pounds per Square Inch Gage

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SCHED or SCH

Schedule (of pipe)

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SMLS

Seamless pipe

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SR

Short Radius

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SRL

Single Random Length

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STD

Standard

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TBE

Thread Both Ends of pipe

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T & C

Threaded and coupled

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TOE

Thread One End

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WOG

Water, Oil, Gas

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WT

Weight

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WWP

Working Water Pressure

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XS

Extra Strong standard pipe weight, sometimes described as extra heavy (XH).

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XXS

Double Extra Strong pipe weight, sometimes described as double extra heavy (XXH).

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What is meant by the term “Grades of Pipe” ?

Grades of pipe refer to subsets or divisions within the different types of Seamless and ERW pipes. ‘Grades’ designates mechanical properties such as minimum yield and tensile strength. Grade B is superior to Grade A. Grade has no relevance to ASTM classifications.

Ex: The “A” in A106 does not indicate Grade A pipe.

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How is Steel Pipe Made?

Though there are at least 10 different methods used in producing steel pipe today, by far the largest percentage of production falls into three categories:

Continuous Weld (CW): pipe is made by pulling heated skelp through a series of forming rollers and butted together forming a seam.

Electric Resistance Weld (ERW): Cold coils of steel are automatically pulled through a series of rollers and arc-welded. This is a cold process. The seam on ERW is annealed, either in a furnace, or chemically.

Seamless: A solid billet of steel is rotated while a mandrel shapes an interior hole.

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Is Standard Weight pipe the same as Schedule 40?

To distinguish different weights of pipe, it is common to use the Schedule terminology from ANSI/ASME B36.10 Welded and Seamless Wrought Steel Pipe. For all pipe sizes the outside diameter (O.D.) remains relatively constant. The variations in wall thickness affects only the inside diameter (I.D.). The higher the schedule number is, the thicker the pipe is. Since the outside diameter of each pipe size is standardized, a particular nominal pipe size will have different inside pipe diameter depending on the schedule specified.

A schedule number indicates the approximate value of

Sch. = 1000 P/S

Where:

P = service pressure (psi)

S = allowable stress (psi)

List of Schedules:

  • Light Wall
  • Schedule 10 (Sch/10, S/10)
  • Schedule 20 (Sch/20, S/20)
  • Schedule 30 (Sch/30, S/30)
  • Schedule 40 (Sch/40, S/40)
  • Standard Weight (ST, Std, STD)
  • Schedule 60 (Sch/60, S/60)
  • Extra Strong (Extra Heavy, EH, XH, XS)
  • Schedule 80 (Sch/80, S/80)
  • Schedule 100 (Sch/100, S/100)
  • Schedule 120 (Sch/120, S/120)
  • Schedule 140 (Sch/140, S/140)
  • Schedule 160 (Sch/160, S/160)
  • Double Extra Strong (Double extra heavy, XXH, XXS)

*Note that many of the schedules are identical in certain sizes.

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What is Galvanizing?

Galvanizing is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting. The term is derived from the name of Italian scientist Luigi Galvani. Although galvanization can be done with electrochemical and electro deposition processes, the most common method in current use is hot-dip galvanization, in which steel parts are submerged in a bath of molten zinc. The value of galvanizing stems from the corrosion resistance of zinc, which, under most service conditions, is considerably greater than that of iron and steel. The zinc serves as a sacrificial anode, so that it protects exposed steel.

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What size pipe tap do I need?

Drill Sizes For Pipe Taps:

Size of Tap Number of threads per inch Diameter of Drill
 1/8”  27  11/32
1/4”  18 7/16
 3/8” 18 37/64
 1/2” 14 23/32
 3/4” 14 59/64
1” 11 1/2 1 5/32
1 1/4”  11 1/2  1 5/32
1 1/2”  11 1/2  1 49/64
2”  11 1/2  2 3/16
2 1/2”  8 2 9/16
3”  8 3 3/16
3 1/2”  8  3 11/16
4”  8  4 3/16
4 1/2”  8  4 3/4
5”  8  5 5/16
6”  8  6 5/16

Tap And Drill Sizes:

Size of Drill Size of Tap Thread per Inch
 7  1/4  20
F 5/16 18
5/16 3/8 16
U 7/16 14
27/64 1/2 13
31/64 9/16 12
17/32  5/8 11
19/32 11/16 11
21/32 3/4 10
23/32 13/16 10
49/64 7/8 9
53/64 15/16 9
7/8 1 8
63/64 1 1/8  7
1 7/64 1 1/4 7
1 13/64 1 3/8 6
1 11/32 1 1/2 6
1 29/64 1 5/8 5 1/2
1 9/16 1 3/4 5
1 11/16 1 7/8 5
1 23/32 2 4 1/2
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How far do threads go into the fittings?

As a general rule, fittings with tapered pipe threads (NPT) should not be assembled to a specific torque because the torque required for a reliable joint varies with thread quality. After hand-tight engagement, tighten 2-3 full turns for sizes up to 1 inches for NPT thread fittings. You should have between 3.5 and 6 engaged threads. Any number outside of this range may indicate either under or over tightening of the joint or out of tolerance threads. Most common fault a beginner makes is cross-threading the members and not realizing it. The male thread fitting needs to be aligned with the axis of the tapped hole. Rotation force should gradually increase with tightening. NPT is defined by ANSI/ASME standard B1.20.1. Reference ANSI/ASME B1.20.1-1983 (R1992).

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What is the difference between Pipe and Tube?

The primary difference between pipe and tubing is how the size is designated. Pipe is designated by a “Nominal Pipe Size” based upon the ID (inside diameter) of the most common wall thickness. Tubing is designated by the measured OD (outside diameter).

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Why is pipe 21’ ?

In the early 1800s, before the advent of modern pipe manufacturing  processes, pipe was manufactured via the labor-intensive bell and tong method. In this method, sheets of steel, called skelp, were heated until malleable; and pulled via tongs, over a cone-shaped device, called a bell.  It was determined that after pulling the first 21’ over the bell, the skelp started to cool to the point that a good, strong weld was not achieved. The 21’ length stuck, though today, most seamless pipe, and larger ERW pipe is sold in random lengths that range from 17’-24’. 

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Butterfly Properties & Pressure Ratings
Definitions
Gate Properties & Pressure Ratings
Definitions
Check Properties & Pressure Ratings
Definitions
Globe Properties & Pressure Ratings
Definitions
Ball Properties & Pressure Ratings
Definitions

Bonnet

A removable metal plate over a machine part, such as a valve.

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Bolted Bonnet

A bonnet, which is connected, to a valve body with bolts or nuts with studs.

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Union Bonnet

A valve construction in which the bonnet is held on by a union nut with threads on the body.

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Plug or Disc (disk)

A dense mass of material that obstructs a passage.

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Stem

A long and thin supportive or main section of something

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Seat Ring

A part of the flow passageway that is used in conjunction with the CLOSURE MEMBER to modify the rate of flow through the valve.

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Graphite Packing

Typically graphite or PTFE is used due to its low friction coefficient. Enviro-seal applications also have the availability of constant applied force (live-load) packing. While more complex, it allows for constant packing force load throughout the life of the packing material. This packing helps meet contemporary environmental laws.

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Diaphragm Check Valve

A check valve that uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position

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Swing Check Valve (tilting disc check valve)

A check valve in which the closure element is a hinged clapper which swings or rotates open and close about a supporting shaft to prevent back-flow.

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Lift-check Valve

A check valve in which the disc, can be lifted up off its seat by higher pressure of upstream fluid to allow flow to the outlet side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop back-flow.

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In-line Check Valve

A check valve that generally has a spring that will ‘lift’ when there is pressure on the upstream side of the valve. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.

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Needle Valve

A type of valve having a small port and a threaded, needle-shaped plunger. It allows precise regulation of flow, although it is generally only capable of relatively low flow rates.

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Knife Gate Valve

A gate valve closure member that has a narrow parallel gate with a shaped edge for cutting through glutinous media or slurries.

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Rising Stem

Provides a visual indication of valve position because the stem is attached to the gate such that the gate and stem rise and lower together as the valve is operated

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Non-rising Stem

Non-rising stem valves may have a pointer threaded onto the upper end of the stem to indicate valve position, since the gate travels up or down the stem on the threads without raising or lowering of the stem.

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Control Valve

Control valves are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing.

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Flow

Move along or out steadily and continuously in a current or stream.

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Quarter turn valve

Valves that are washer less and require only a quarter turn of the valve handle to be completely open or closed.

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Triple off set butterfly valve

Triple eccentric (offset) Design prevents galling and scratches between the metal seat and the metal disc. The only time where the seal comes into contact with the seat is at the point of complete closure.

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Wafer style butterfly valve

The wafer style butterfly valve is designed to maintain a seal against bi-directional pressure differential to prevent any backflow in systems designed for unidirectional flow.

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Lug-style butterfly valve

Lug-style valves have threaded inserts at both sides of the valve body. This allows them to be installed into a system using two sets of bolts and no nuts. The valve is installed between two flanges using a separate set of bolts for each flange. This setup permits either side of the piping system to be disconnected without disturbing the other side.

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Key

An object used to fasten (something) in position with a pin, wedge, or bolt.

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Packing

A material used to prevent leakage or seepage, as around a pipe joint.

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Packing gland

A small chamber in which an annular packing is compressed around a reciprocating or rotating rod or shaft to form a seal

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Wedge ring

An annular steel ring attached to the upper end of a deflecting wedge, having a slightly smaller diameter than that of the borehole in which the wedge is inserted, serving as a stabilizing ring to hold and center the wedge in the borehole. Also called rose ring

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Soft-Seat

A term used to describe valve trim with an elastomeric or plastic material used either in the VALVE PLUG or SEAT RING to provide tight shutoff with a minimal amount of actuator force

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Bearings

A device that supports, guides, and reduces the friction of motion between fixed and moving machine parts

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Wedge Pins

Provide positive mechanical attachment of disc to shaft

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Retainer Ring

A fastener that holds components or assemblies onto a shaft or in a housing/bore when installed in a groove.

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O-Ring

A gasket in the form of a ring with a circular cross section, typically made of pliable material, used to seal connections

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BI-Directional Service

Reactive or functioning or allowing movement in two usually opposite directions.

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Dead-End Service

End of line duty in either direction to the full rating pressure of the piping system.

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Viton

A brand of synthetic rubber and fluoro-polymer elastomer commonly used in O-rings and other molded or extruded goods.

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Neoprene

Or poly-chloroprene is a family of synthetic rubbers that are produced by polymerization of chloroprene. Neoprene exhibits good chemical stability, and maintains flexibility over a wide temperature range.

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Silicone

Inert, synthetic compounds with a variety of forms and uses. Typically heat-resistant and rubber-like, they are used in sealants, adhesives, lubricants, medical applications, cooking utensils, and insulation.

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Buna-N(Nitrile rubber)

This form of synthetic rubber is unusual in being generally resistant to oil, fuel, and other chemicals (the more nitrile within the polymer, the higher the resistance to oils but the lower the flexibility of the material).

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Stop plate

A metal guard plate connected to a limit switch that prevents damage to the switch. Stop plates keep limit switches from being forced beyond their travel limit.

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Saturated Steam

Water vapor in equilibrium with liquid water at or above the normal boiling point

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Integral Seat

The flow control orifice and seat that is an integral part of the valve body or cage. The seat is machined directly out of the valve body and is normally not replaceable without replacing the body itself – although some can be repaired by welding and re-machining.

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PTFE

Polymer, Textile and Fiber Engineering

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RTFE

Reinforced Tetrafluoroethylene (reinforced teflon)

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TFE

Tetrafluoroethylene

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PSI

Pounds per Square Inch

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MPA

MegaPascal

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EPDM

Ethylene propylene diene monomer (M class / Rubber)

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GPM

Gallons per minute

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WOG

Water, oil & gas

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ASTM

American Society for Testing and Materials

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ASME

American Society of Mechanical Engineers

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WCB

Weldable Cast B-Grade Carbon Steel

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NRS

Non-rising stem

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RS

Rising stem

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MSS

Manufacturers Standardization Society

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API

American Petroleum Institute

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SWP

Steam Working Pressure

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O S & Y

Outside stem & yoke

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CWP

Cold Working Pressure

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What is a Gate Valve used for?

Gate Valves are used as isolation valves in water, oil, gas, chemical, or other fluid piping systems.

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What does Double Dead end service mean?

In valves, double dead end service means no flow through. When the valve is not in service the fluid in the pipe does not move. This can be problematic depending on the fluid used, as some fluids require movement. Settling, reactive fluids pose hazards, including bacterial build up, which can lead to contamination. Lug-style butterfly valves are most commonly used for this application due to its reduced pressure rating.

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What is a Triple Off set valve?

A triple offset butterfly valve differs from a double offset butterfly valve in that it offers a special sealing mechanism, providing a bubble tight shut off due to its additional offset. The friction caused between the disc and seat is minimized. The unique feature of this design is that it provides for low torque, broad sealing, and tight shut off. The valve uses less weight, less cost, and less space, and maintains zero friction and leakage. This valve is functionally reliable and is used in most applications, especially those involving high cycle frequency, high pressure and extreme temperatures.

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What is a Double Off set valve?

A double offset valve provides excellent controllability, bubble tight shut off, greater seat life and smooth operation. The first offset is the shaft location behind disc as opposed to in the middle allowing for a continuous sealing surface on the disc. The second offset refers to shaft location, typically towards one side of the disc.

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What is a Check Valve used for?

Check valves, or non-return valves, allow water or other material to flow in only one direction.

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What Is a Globe Valve used for?

Globe Valves are used primarily as a lower-cost option for balancing a piping system. The conical plug found in a glove valve does a good job of regulating flow.

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Why Are Butterfly Valves Used?

A Butterfly Valve is used to control the flow of material through a circular pipe or tube. Typically the material is air, gas, steam, or liquid. Certain dry materials may also be handled through a butterfly valve. Simply, a butterfly valve consists of a circular disc with its pivot axis at right angles to the direction material is flowing. The valve is made up of a body, seat, disc, stem, and actuator. Each component part is available in a variety of materials called “trim features.” Properly combining trim features to address material handled and environment is important in selecting the correct model valve for its intended service.

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What is Lead Free?

The Reduction of Lead in Drinking Water Act is a federal law that amends the Safe Drinking Water Act (SDWA) and sets new, lower standards for the amount of lead permissible in plumbing products that come into contact with potable (drinkable) water. The U.S. Environmental Protection Agency (EPA) has primary responsibility for interpreting the SDWA with individual states using health or plumbing codes or other standards consistent with the SDWA and EPA regulations to enforce those standards.

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What are the benefits of a Quarter-turn Valve vs. Multi-turn Valve?

The quarter-turn valves have the advantage of quick shut-off of the flow. Many multi-turn valves are of a more robust design than comparable quarter-turn valves. Multi-turn valves close slowly, reducing the chance of water hammer.

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Why would I select a high performance butterfly instead of a resilient seated butterfly valve?

High performance butterfly valves have carbon steel bodies, adjustable packing, offset disc design, PTFE seats, and are sometimes suitable for steam service. Standard resilient (rubber) seated butterfly valves do not have those features, but are less costly and perform well in many applications.

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What are valves?

Valves are mechanical devices that control the flow and pressure within a system or process. They are essential components of a piping system that conveys liquids, gases or vapors. Different types of Valves are available: gate, globe, plug, ball, butterfly, check, diaphragm, pinch, pressure relief, and control Valves. Each of these types has a number of models, each with different features and functional capabilities. Some Valves are self-operated while others manually or with an actuator or pneumatic or hydraulic is operated.

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License Agreement

By using the cdsiPipe application (the "Application"), you agree to all the terms and conditions contained in this End User License Agreement ("EULA"). This EULA constitutes a binding contract only between you (sometimes hereinafter referred to as "User") and Charles D. Sheehy, Inc. ("CDSI") and no other party, including without limitation Apple or its related companies. If you disagree with any of the terms and conditions contained in this EULA, your sole remedy shall be to refrain from the use of the Application. The information in this application is for general information, reference and study purposes only. This application may contain links and references from various other sites for the sole purpose of study and knowledge sharing purposes only. Various diagrams, tables, paragraphs, pictures and drawings may be taken by a chance of error or misinformation as part of us, from several documents that are copyrighted. CDSI acknowledge their use without written permission and gives full credit to those organizations, publications, and documents for assisting us to study more on their issues and concern. While we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the application or the information, products, services, or related graphics contained on the application for any purpose. Any reliance you place on such information is therefore strictly at your own risk. In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this application.

 

 

SCOPE OF USE

 

The Application is licensed, not sold. Consequently, CDSI hereby grants User a limited, non-transferable right and license to use the Application on any device which is owned or controlled by User and expressly authorized by Apple for use of so-called “apps” downloaded from its App Store (including without limitation iPhone, iPod Touch and iPad devices). The foregoing license is contingent upon User’s full compliance with all applicable App Store Terms of Sale and App Store Terms and Conditions. Please note that CDSI offers no maintenance or support of the Application under this Agreement.

PURPOSE OF USE

 

This application is for the purpose of general information only.

EXCLUSIONS ON USE

 

The User may not do any of the following without the prior written consent of CDSI: (a) make copies of the Application for purpose of distribution to others or distribute the Application to others, whether directly or indirectly; (b) decompile, reverse engineer, disassemble or otherwise reduce the software to human-perceivable form; (c) modify, adapt, translate, rent or sublicense, assign, loan, sell for profit or distribute the Application or create derivative works based thereon.

 

NO WARRANTIES  

 

This application is provided “as is” without any representations or warranties, express or implied. CDSI makes no representations or warranties in relation to this application or the information and materials provided on this application.

 

Without prejudice to the generality of the foregoing paragraph, CDSI does not warrant that:

 

  • This application will be constantly available, or available at all
  • The information on this application is complete, true, accurate or non-misleading.

 

Nothing on this application constitutes, or is meant to constitute, advice of any kind. If you require advice in relation to any legal, financial or medical matter you should consult an appropriate professional.

 

 

 

LIMITATIONS OF LIABILITY

 

CDSI will not be liable to you (whether under the law of contact, the law of torts or otherwise) in relation to the contents of, or use of, or otherwise in connection with, this application:

 

  • To the extent that the application is provided free-of-charge, for any direct loss.
  • For any indirect, special or consequential loss
  • For any business losses, loss of revenue, income, profits or anticipated savings, loss of contracts or business relationships, loss of reputation or goodwill, or loss or corruption of information or data.

 

These limitations of liability apply even if
CDSI has been expressly advised of the potential loss.

 

EXCEPTIONS

 

Nothing in this application disclaimer will exclude or limit any warranty implied by law that it would be unlawful to exclude or limit; and nothing in this application disclaimer will exclude or limit CDSI’s liability in respect of any:

 

  • Death or personal injury caused by CDSI’s negligence
  • Fraud or fraudulent misrepresentation on the part of CDSI
  • Matter which it would be illegal or unlawful for CDSI to exclude or limit, or to attempt or purport to exclude or limit, its liability.

 

REASONABLENESS

 

By using this application, you agree that the exclusions and limitations of liability set out in this application disclaimer are reasonable.

 

If you do not think they are reasonable, you must not use this application.

 

 

 

OTHER PARTIES

 

You accept that, as a limited liability entity, CDSI has an interest in limiting the personal liability of its officers and employees. You agree that you will not bring any claim personally against CDSI officers or employees in respect of any losses you suffer in connection with the application.

 

Without prejudice to the foregoing paragraph, you agree that the limitations of warranties and liability set out in this application disclaimer will protect CDSI officers, employees, agents, subsidiaries, successors, assigns and sub-contractors as well as CDSI.

 

ABOUT DATA IN THE APPLICATION

 

 

The data in this application is generally available on tables as standardized by ASME (American Society Of Mechanical Engineers) and some are taken from manufacturers brochures readily available to the public. This application is provided as is without any warranty of any kind. The entire risk arising out of the use of this application remains with the user. All material contained in this application is for general information only. This material should not, therefore, be used or relied upon for any specific application without independent competent professional examination and verification of its accuracy, suitability and applicability.

 

This application may contain links and references from various other sites for the sole purpose of study and knowledge sharing purposes only. Various diagrams, tables, paragraphs, pictures and drawings may be taken by a chance of error or misinformation as part of us, from several documents that are copyrighted. CDSI acknowledges their use without written permission and gives full credit to those organizations, publications, and documents for assisting CDSI to study more on their issues and concern. While CDSI endeavours to keep the information up to date and correct, it makes no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the application or the information, products, services, or related graphics contained on the application for any purpose. Any reliance you place on such information is therefore strictly at your own risk.

 

GOVERNING LAW

 

This EULA shall be governed by and construed in accordance with the laws of the State of Massachusetts without regard to principles of conflicts of law. Any action, suit or proceeding arising out of or related to this EULA or the subject matter hereof shall be brought only in a federal or state court of competent jurisdiction located in the county and state in which CDSI has its principal place of business at the time of filing of such action, suit or proceeding, and the parties hereby unconditionally and irrevocably consent and submit to such exclusive jurisdiction and waive any objection that either of them may now or hereafter have with respect thereto.

 

UNENFORCEABLE PROVISIONS

 

If any provision of this application disclaimer is, or is found to be, unenforceable under applicable law, that will not affect the enforceability of the other provisions of this application disclaimer.