About Plastic and Rubber Tubing
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How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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About Hose
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High-Purity Soft Plastic and Rubber Tubing
Designed for high-purity processes, this tubing is made without plasticizers like DEHP that can contaminate the fluid passing through it. It meets USP Class VI specifications for material testing; it is not for use in medical applications. Tubing is clear or semi-clear, so you can monitor flow. It’s also flexible and easily bends around objects.
Tubing with braid reinforcement has extra strength to handle higher pressures than nonreinforced tubing.
For technical drawings and 3-D models, click on a part number.
- Manufacturer Equivalent Number:
Clear Tygon Plastic Blend Tubing without Polyester Braid Reinforcement: 2475
Clear Tygon Plastic Blend Tubing with Polyester Braid Reinforcement: 2475 I.B. - Flexible
- Compatible with Barbed Tube Fittings
- Soft (Durometer 70A)
- Environment: Sanitary
- Temperature Range: -90° to 120° F
| ID | OD | Wall Thick. | Bend Radius | Max. Pressure | Max. Vacuum | Color | Specifications Met | Lengths, ft. | Per Ft. | |
Without Polyester Braid Reinforcement | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/16" | 3/16" | 1/16" | 1/8" | 85 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 00000 | |
| 1/8" | 1/4" | 1/16" | 1/4" | 50 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 3/16" | 5/16" | 1/16" | 1/2" | 40 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 1/4" | 3/8" | 1/16" | 3/4" | 30 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 5/16" | 7/16" | 1/16" | 1 1/4" | 15 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 3/8" | 1/2" | 1/16" | 1 3/4" | 20 psi @ 72° F | 25 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 1/2" | 3/4" | 1/8" | 1 1/2" | 25 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 5/8" | 7/8" | 1/8" | 2 1/4" | 25 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 00000 | |
| 3/4" | 1" | 1/8" | 3 1/4" | 20 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 00000 | |
| 1" | 1 3/8" | 3/16" | 3" | 20 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 00000 | |
With Polyester Braid Reinforcement | ||||||||||
| 1/4" | 1/2" | 1/8" | 1/4" | 220 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 3/8" | 5/8" | 1/8" | 1" | 210 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 1/2" | 3/4" | 1/8" | 1 1/4" | 230 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 0000 | |
| 5/8" | 7/8" | 1/8" | 1 3/4" | 130 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 00000 | |
| 3/4" | 1 1/16" | 5/32" | 2 1/4" | 130 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 00000 | |
| 1" | 1 3/8" | 3/16" | 3 1/2" | 120 psi @ 72° F | 29 in. of Hg @ 72° F | Clear | USP Class VI | 0000000 | 00000 | |
Vibration-Resistant Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Carbon Dioxide, Ammonia, Chloride, Fluoride, Fluorine, Germane, Fluorocarbon, Halide, Helium, Hydrogen, Argon, Krypton, Oxygen, Laser Gas, Natural Gas, Neon, Butane, Xenon, Tungsten Hexafluoride, Silane, Sulfur Hexafluoride, Nitrogen
- Temperature Range: -420° to 1000° F, except nickel gaskets are -325° to 600° F
- Tubing: Use with 316/316L stainless steel
- Specifications Met: MIL-STD-810
Use these fittings in applications ranging from semiconductor manufacturing to satellites and rockets. They resist high vibration and vacuum while maintaining high purity. Two anti-torque rings stop the fittings from twisting your tubing or component during installation. This also prevents the fittings from loosening or leaking from high vibration, so they’re safe to use with hazardous gases. All are compatible with Swagelok® VCR fittings.
Also known as ultra-high-purity fittings, these fittings were packed in a Class 100 clean room, so they arrive without contaminants. They're also designed from inside and out to prevent the creation of contaminants. Made of stainless steel, they won’t rust. Their anti-torque rings prevent galling, which extends the life of the seal while limiting particles. A metal gasket, instead of a rubber one, also reduces the potential for particles. And their interior is polished to a 7 Ra finish—the same as a high-quality stainless steel sink—to prevent particles from clinging to the inside.
Choose from fully assembled fittings or build a custom fitting. For a complete fitting, you'll need two anti-torque rings, two adapters, a male and female nut, and a gasket.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Wall Thickness | Lg. | Material | Gasket Material | Max. Pressure | Max. Vacuum | Includes | Each | |
| 1/4" | 0.035" | 1 13/16" | 316/316L Stainless Steel | Nickel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | Two Adapters, Two Anti-Torque Rings, Gasket, Male Nut, Female Nut | 0000000 | 000000 |
| 1/2" | 0.049" | 2 15/16" | 316/316L Stainless Steel | Nickel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | Two Adapters, Two Anti-Torque Rings, Gasket, Male Nut, Female Nut | 0000000 | 000000 |
These adapters are also known as glands.
| For Tube OD | Wall Thick. | Lg. | Material | Max. Pressure | Max. Vacuum | Each | |
| 1/4" | 0.035" | 1 1/8" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 000000 |
| 1/4" | 0.035" | 1 3/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 0.049" | 1 1/8" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 0.049" | 1 13/16" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| For Tube OD | Nut Material | Max. Pressure | Max. Vacuum | Each | |
Male | |||||
|---|---|---|---|---|---|
| 1/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
Female | |||||
| 1/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 0000 |
| 1/2" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
Nickel gaskets are softer than stainless steel gaskets, so they won’t wear down sealing surfaces as much, and they’re easier to tighten. However, they don’t withstand temperatures as high. They’re reactive to carbon monoxide and ozone, so they shouldn’t be used with those chemicals.
Stainless steel gaskets are a more universal gasket material than nickel gaskets. They’re also stronger and better at handling high temperatures. You can use them with carbon monoxide and ozone. However, they’re harder to tighten than nickel gaskets, and they’ll wear down sealing surfaces more quickly.
Argon, Nitrogen, and Oxygen Hose with Male and Female Threaded Fittings
- Temperature Range: -65° to 450° F
- Maximum Vacuum: 28" of Hg @ 72° F
- Material: PTFE with 304 Stainless Steel Cover
This hose is often called pigtail hose. It comes cleaned, capped, and bagged to meet CGA (Compressed Gas Association) G4.1. Hose should not be used underground.
For technical drawings and 3-D models, click on a part number.
Argon, Nitrogen, and Oxygen Hose with Female Threaded Fittings
- Temperature Range: -65° to 450° F
- Maximum Vacuum: 28" of Hg @ 72° F
- Material: PTFE with 304 Stainless Steel Cover
This hose is often called pigtail hose. It comes cleaned, capped, and bagged to meet CGA (Compressed Gas Association) G4.1. Hose should not be used underground.
For technical drawings and 3-D models, click on a part number.
High-Temperature Argon, Nitrogen, and Oxygen Hose
- Temperature Range: -320° to 1,500° F
- Maximum Vacuum: 29" of Hg @ 72° F
- Material: 316 Stainless Steel with 304 Stainless Steel Cover
Transfer industrial gases in temperatures up to 1500° F. The braided reinforcement provides good flexibility in high-vibration applications. A cover surrounds the braid to protect it from damage. Hose comes cleaned, capped, and bagged to meet CGA (Compressed Gas Association) G4.1. It should not be used underground.
For technical drawings and 3-D models, click on a part number.
Welding Gas Hose
- Temperature Range: -40° to 180° F
- Material:
Grade R Hose: EPDM Rubber
Grade T Hose: Blended Rubber - Color: Green, Red, or Green/Red
- Compatible Hose Fittings: Barbed
Made of EPDM rubber, this hose is abrasion, weather, and ozone resistant.
Grade R Hose—Green hose is for oxygen; red hose is for acetylene.
Grade T Hose—It's also oil and flame resistant. Green hose is for oxygen; red hose is for acetylene, hydrogen, MAPP, natural gas, propane, or propylene.
For technical drawings and 3-D models, click on a part number.
Welding Gas Hose with Fittings
- Material:
Grade R Hose: EPDM Rubber
Grade T Hose: Blended Rubber - Color: Green, Red, or Green/Red
- Temperature Range:
Male Fittings: -40° to 120° F
Female Fittings: -40° to 180° F
Hose is abrasion, weather, and ozone resistant.
Green hose has right-hand threads on the fittings.
Red hose has left-hand threads on the fittings.
For technical drawings and 3-D models, click on a part number.
| For Use With | Welding Hose Grade | Number of Lines | Color | ID | OD | Thread Size | Max. Pressure | 12 1/2 ft. | 25 ft. | 50 ft. | 100 ft. | |
Brass Threaded UNF Female × Brass Threaded UNF Female | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oxygen | R | 1 | Green | 3/16" | 7/16" | 9/16"-18 × 9/16"-18 | 200 psi @ 72° F | 000000 | ||||
| Oxygen | R | 1 | Green | 1/4" | 9/16" | 9/16"-18 × 9/16"-18 | 200 psi @ 72° F | 000000 | ||||
| Oxygen, Acetylene | R | 2 | Green/Red | 3/16" | 7/16" | 9/16"-18 × 9/16"-18 | 200 psi @ 72° F | 000000 | ||||
| Oxygen, Acetylene | R | 2 | Green/Red | 1/4" | 9/16" | 9/16"-18 × 9/16"-18 | 200 psi @ 72° F | 000000 | ||||
| Oxygen, Acetylene, Hydrogen, Natural Gas, MAPP Gas, Propane, Propylene | T | 2 | Green/Red | 1/4" | 9/16" | 9/16"-18 × 9/16"-18 | 200 psi @ 72° F | 000000 | ||||
Threaded Hose Fittings for Compressed Gas
Use these fittings to connect welding hose to pressure regulators and torches. They are also known as CGA (Compressed Gas Association) fittings. Fittings are brass for good corrosion resistance.
Wye adapters allow you to connect two hoses from a single pressure-regulator outlet.
Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | |||||||
|---|---|---|---|---|---|---|---|
| 032 x 022 | B | 5/8"-18 x 9/16"-18 | UN/UNF (CGA) | Right Hand | Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Xenon | 0000000 | 000000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
Female Hose Connection | Female Pipe Connection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | Pipe Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | ||||||||||
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | 1/4 | NPT | Right Hand | Oxygen | 000000 | 000000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
Female Hose Connection | Male Hose Connection | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | ||||||||||||
| 020 | A | 3/8"-24 | UN/UNF (CGA) | Right Hand | 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | Oxygen | 0000000 | 000000 |
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | 020 | A | 3/8"-24 | UN/UNF (CGA) | Right Hand | Oxygen | 0000000 | 00000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
Female Hose Connection | Male Pipe Connection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | Pipe Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | ||||||||||
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | 1/4 | NPT | Right Hand | Oxygen | 0000000 | 000000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
Female Pipe Connection | Male Hose Connection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Thread Type | Thread Direction | CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | ||||||||||
| 1/4 | NPT | Right Hand | 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | Oxygen | 0000000 | 000000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | |||||||
|---|---|---|---|---|---|---|---|
| 032 x 022 | B | 5/8"-18 x 9/16"-18 | UN/UNF (CGA) | Right Hand | Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Xenon | 0000000 | 000000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
Male Hose Connection | Male Pipe Connection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | Pipe Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | ||||||||||
| 020 | A | 3/8"-24 | UN/UNF (CGA) | Right Hand | 1/4 | NPT | Right Hand | Oxygen | 000000000 | 00000 |
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | 1/8 | NPT | Right Hand | Oxygen | 000000000 | 0000 |
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | 1/4 | NPT | Right Hand | Oxygen | 0000000 | 0000 |
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | 3/8 | NPT | Right Hand | Oxygen | 000000000 | 0000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | |||||||
|---|---|---|---|---|---|---|---|
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | Oxygen | 000000 | 00000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
| CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | |||||||
|---|---|---|---|---|---|---|---|
| 022 | B | 9/16"-18 | UN/UNF (CGA) | Right Hand | Oxygen | 0000000 | 000000 |
Barbed Hose Fittings for Compressed Gas
Commonly used in low-pressure welding applications, these fittings connect downstream of your tank and pressure regulator. Slide the barbed end into rubber hose and secure with a crimp-on hose ferrule. Fittings are brass for good corrosion resistance.
Adapters let you adapt to a threaded end so you can connect welding hose to torches or pressure regulators. They consist of a barbed shaft with a rounded end that sits inside a threaded CGA nut (sold separately) so you can make a threaded hose connection. Adapters with a spiral barbed end twist into hose for an easier installation than adapters with a standard barb.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
- Attachment Type: Use Crimp-On Hose Ferrules
Adapters | Nuts with Right-Hand Threads | Nuts with Left-Hand Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hose ID | For CGA Number | Gas Fitting Size | For Use With | Each | CGA Number | Each | CGA Number | Each | |||
Brass | |||||||||||
| 3/16" | 020, 021 | A | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 00000 | 020 | 0000000 | 00000 | __ | 000000 | 00 |
| 3/16" | 022, 023 | B | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 000 | 022 | 000000 | 000 | 023 | 000000 | 00000 |
| 1/4" | 022, 023 | B | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 000 | 022 | 000000 | 000 | 023 | 000000 | 000 |
| 5/16" | 022, 023 | B | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 0000 | 022 | 000000 | 000 | 023 | 000000 | 000 |
| 3/8" | 022, 023 | B | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 0000 | 022 | 000000 | 000 | 023 | 000000 | 000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
- Attachment Type: Use Crimp-On Hose Ferrules
Adapters | Nuts with Right-Hand Threads | Nuts with Left-Hand Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hose ID | For CGA Number | Gas Fitting Size | For Use With | Each | CGA Number | Each | CGA Number | Each | |||
Brass | |||||||||||
| 3/16" | 022, 023 | B | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 0000000 | 00000 | 022 | 000000 | 00000 | 023 | 000000 | 00000 |
| 1/4" | 022, 023 | B | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 0000000 | 0000 | 022 | 000000 | 000 | 023 | 000000 | 000 |
Quick-Disconnect Hose Couplings for Compressed Gas
Use these couplings to quickly link and unlink welding hoses, torches, and pressure regulators. They consist of a plug and socket that are sold together as a set of two—you’ll get one right-hand connection for oxygen and one left-hand connection for fuel gas. The connections are noninterchangeable and color coded so you can’t mix lines. The male threaded ends attach to threaded welding hose, and the female threaded ends attach to a torch or pressure regulator. To connect couplings, push the plug into the socket; the sleeve on the socket has a spring-loaded lock for gas-tight connections. To disconnect, pull back on the socket sleeve and twist to release the plug. The sockets have a shut-off valve that stops the flow when the coupling is separated so gas won’t leak from the line. The sockets also have a built-in check valve to prevent gas backflow. Couplings are also known as CGA (Compressed Gas Association) couplings. They are brass for good corrosion resistance.
Couplings with left-hand threads are identified with a notch in the nut.
Note: Couplings have a CGA number that corresponds to a specific type of gas. Make sure the CGA number of the coupling matches the CGA number of your tank and other system components.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
- Specifications Met: OSHA 29 CFR 1915.55, OSHA 29 CFR 1917.152, OSHA 29 CFR 1926.350, UL Listed
| Includes | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
| One CGA 022 Coupling Adapter (Male Hose Plug × Female Torch Socket) One CGA 023 Coupling Adapter (Male Hose Plug × Female Torch Socket) | B | 9/16"-18 | UN/UNF (CGA) | Right Hand (CGA 022), Left Hand (CGA 023) | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 0000000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
- Specifications Met: OSHA 29 CFR 1915.55, OSHA 29 CFR 1917.152, OSHA 29 CFR 1926.350, UL Listed
| Includes | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
| One CGA 022 Coupling Adapter (Male Hose Plug × Female Regulator Socket) One CGA 023 Coupling Adapter (Male Hose Plug × Female Regulator Socket) | B | 9/16"-18 | UN/UNF (CGA) | Right Hand (CGA 022), Left Hand (CGA 023) | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 0000000 |
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
- Specifications Met: OSHA 29 CFR 1915.55, OSHA 29 CFR 1917.152, OSHA 29 CFR 1926.350, UL Listed
| Includes | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
| One CGA 022 Coupling Adapter (Male Hose Plug × Male Hose Socket) One CGA 023 Coupling Adapter (Male Hose Plug × Male Hose Socket) | B | 9/16"-18 | UN/UNF (CGA) | Right Hand (CGA 022), Left Hand (CGA 023) | Acetylene, Butane, Fuel Gases, LP Gas, Natural Gas, Oxygen, Propane | 000000 | 0000000 |
High-Pressure Nipples for Compressed Gas
Commonly used in high-pressure welding applications, these nipples connect your tank to the inlet of a pressure regulator. One side has a threaded pipe end and the other side has a rounded end that sits inside a threaded nut (sold separately) so you can make a threaded connection.
Brass nipples have good corrosion resistance and are softer than 316 stainless steel nipples, so they're easier to thread together. Chrome-plated brass nipples have better corrosion and wear resistance than unplated brass nipples and have a bright, shiny appearance.
Nipples with filter help keep the line clean by preventing small particles and other impurities from entering your pressure regulator.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Maximum Temperature: 120° F
Regulator Connection | |||||||
|---|---|---|---|---|---|---|---|
| For Number (Max. Pressure) | Pipe Size | Thread Type | Lg. | For Use With | Features | Each | |
Brass—Tighten With Wrench | |||||||
| CGA 170 (3,000 psi @ 72° F) | 1/8 | NPT | 1 1/4" | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | __ | 000000000 | 000000 |
| CGA 180 (3,000 psi @ 72° F) | 1/8 | NPT | 2" | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | __ | 000000000 | 00000 |
| CGA 540 (3,000 psi @ 72° F) | 1/4 | NPT | 2 1/16" | Oxygen | __ | 000000000 | 0000 |
| CGA 701 (4,700 psi @ 72° F) | 1/4 | NPT | 3" | Oxygen | Filter | 000000000 | 00000 |
| BS 341 No. 3 (4,350 psi @ 72° F) | 1/4 | NPT | 2 1/2" | Air, Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Perfluoropropane | __ | 000000000 | 00000 |
Chrome-Plated Brass—Tighten With Wrench | |||||||
| CGA 540 (3,000 psi @ 72° F) | 1/4 | NPT | 2 1/16" | Oxygen | __ | 000000000 | 00000 |
- Maximum Pressure: See table
- Maximum Temperature: 120° F
| Number | Gender | Thread Size | Pipe Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
Brass | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| CGA 540 | Female | 0.908"-14 | __ | NGO | Right Hand | 3,000 psi @ 72° F | Oxygen | 000000000 | 00000 |
| CGA 701 | Female | 1.108"-14 | __ | NGO | Right Hand | 4,700 psi @ 72° F | Oxygen | 000000000 | 00000 |
Aluminum-Plated Brass | |||||||||
| CGA 170 | Female | 9/16"-18 | __ | UN/UNF (CGA) | Right Hand | 3,000 psi @ 72° F | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | 000000000 | 00000 |
| CGA 180 | Female | 5/8"-18 | __ | UN/UNF (CGA) | Right Hand | 3,000 psi @ 72° F | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | 000000000 | 00000 |
| BS 341 No. 3 | Male | __ | 5/8 | BSPT | Right Hand | 3,000 psi @ 72° F | Air, Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Perfluoropropane | 000000000 | 00000 |
Chrome-Plated Brass | |||||||||
| CGA 540 | Female | 0.908"-14 | __ | NGO | Right Hand | 3,000 psi @ 72° F | Oxygen | 000000000 | 00000 |
High-Pressure Threaded Fittings for Compressed Gas
Designed to handle high-pressure welding applications, these fittings are commonly used to connect pressure regulators to compressed gas tanks or cylinders. Fittings are also known as CGA (Compressed Gas Association) fittings. They are brass for good corrosion resistance.
Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Maximum Temperature: 120° F
CGA Number | Tank Connection | Regulator Connection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Tank | Regulator | Thread Size | Thread Type | Thread Direction | Thread Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
Brass | |||||||||||
| 540 | 580 | 0.908"-14 | NGO | Right Hand | 0.960"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Xenon | 0000000 | 000000 |
- Maximum Pressure: See table
- Maximum Temperature: 120° F
CGA Number | Tank Connection | Regulator Connection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Tank | Regulator | Thread Size | Thread Type | Thread Direction | Thread Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
Brass | |||||||||||
| 346 | 540 | 0.830"-14 | NGO | Right Hand | 0.908"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Air, Oxygen | 0000000 | 000000 |
- Maximum Pressure: See table
- Maximum Temperature: 120° F
CGA Number | Tank Connection | Regulator Connection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Tank | Regulator | Thread Size | Thread Type | Thread Direction | Thread Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
Brass | |||||||||||
| 580 | 540 | 0.960"-14 | NGO | Right Hand | 0.908"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Xenon | 0000000 | 000000 |