Connection Style Connection Style |
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| Threaded | Push to Connect |
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| Barbed | Yor-Lok |
For Use With For Use With | Show |
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For Use With For Use With | Hide |
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Body Material Body Material |
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Shape Shape |
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 | Straight |
Mounting Orientation Mounting Orientation |
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Maximum Pressure Maximum Pressure |
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Valve Function Valve Function |
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Valve Type Valve Type |
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Check Valve Type Check Valve Type |
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Actuation Actuation |
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Spring Material Spring Material |
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Maximum Temperature Maximum Temperature |
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Piston Material Piston Material |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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 Backflow-Prevention Valves
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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.
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 | Trade Size | For Use With | Each | CGA Number  | Each | CGA Number | Each | |||
Brass | |||||||||||
| 1/8" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 00000 | 032 | 0000000 | 00000 | 033 | 0000000 | 00000 |
| 3/16" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 0000 | 032 | 0000000 | 0000 | 033 | 0000000 | 0000 |
| 1/4" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 0000 | 032 | 0000000 | 0000 | 033 | 0000000 | 0000 |
| 3/8" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 0000 | 032 | 0000000 | 0000 | 033 | 0000000 | 0000 |
Check Valves with Push-to-Connect Fittings
Insert tubing into the push-to-connect fittings—no heat, solder, or flux required. These valves open to allow flow in one direction and close when flow stops or reverses.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
- For Use With:
Inch: Air, Argon, Helium, Krypton, Neon, Nirtrogen, Oil, Water, Xenon
Metric: Air, Helium, Krypton, Neon, Nitrogen, Oil, Water, Xenon - Piston Material: Brass
- Spring Material: 302 Stainless Steel
- Seal Material: See Table
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Seal Material | End-to-End Lg. | Each | |
| 1/4" | Not Rated | 115 psi @ 70° F | 3 | 0° to 160° | Viton® Fluoroelastomer | 2 1/16" | 00000000 | 000000 |
| 3/8" | Not Rated | 115 psi @ 70° F | 3 | 0° to 160° | Viton® Fluoroelastomer | 2 1/4" | 00000000 | 00000 |
| 4mm | Not Rated | 115 psi @ 70° F | 3 | 0° to 175° | Buna-N Rubber | 1 3/4" | 00000000 | 00000 |
| 6mm | Not Rated | 115 psi @ 70° F | 3 | 0° to 175° | Buna-N Rubber | 2 1/16" | 00000000 | 00000 |
| 8mm | Not Rated | 115 psi @ 70° F | 3 | 0° to 175° | Buna-N Rubber | 2 1/4" | 00000000 | 00000 |
Check Valves with Yor-Lok Fittings
Two sleeves give these fittings extra gripping power. They bite into tubing as you tighten the nut to form a strong seal. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. Valves open to allow flow in one direction and close when flow stops or reverses.
316 stainless steel valves are more corrosion resistant than brass valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: Brass
- Spring Material: 316 Stainless Steel
- Seal Material: Buna-N Rubber
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Yor-Lok Female Inlet × Yor-Lok Female Outlet | |||||||
|---|---|---|---|---|---|---|---|
| 1/8" | 0.22 | 3,000 psi @ 70° F | 1 | -30° to 275° | 2 3/8" | 000000 | 000000 |
| 1/4" | 0.75 | 3,000 psi @ 70° F | 1 | -30° to 275° | 2 1/2" | 000000 | 00000 |
| 3/8" | 2.09 | 2,300 psi @ 70° F | 1 | -30° to 275° | 3 3/8" | 000000 | 00000 |
| 1/2" | 3.3 | 2,200 psi @ 70° F | 1 | -30° to 275° | 4 1/8" | 000000 | 00000 |
| 3/4" | 6.01 | 1,900 psi @ 70° F | 1 | -30° to 275° | 4 3/8" | 000000 | 000000 |
| 1" | 6.56 | 1,500 psi @ 70° F | 1 | -30° to 275° | 4 5/8" | 000000 | 000000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Yor-Lok Female Inlet × Yor-Lok Female Outlet | |||||||
|---|---|---|---|---|---|---|---|
| 1" | 4.48 | 1,500 psi @ 70° F | 0.33 | -10° to 375° | 4 3/4" | 00000000 | 0000000 |
| 3/4" | 4.48 | 1,900 psi @ 70° F | 0.33 | -10° to 375° | 3 1/2" | 00000000 | 000000 |
| 1/2" | 1.68 | 2,200 psi @ 70° F | 0.33 | -10° to 375° | 3" | 00000000 | 000000 |
| 3/8" | 1.47 | 2,300 psi @ 70° F | 0.33 | -10° to 375° | 2 1/2" | 00000000 | 000000 |
| 1/4" | 0.47 | 3,000 psi @ 70° F | 0.33 | -10° to 375° | 2 3/8" | 00000000 | 00000 |
| 1/8" | 0.1 | 3,000 psi @ 70° F | 0.33 | -10° to 375° | 2 1/4" | 00000000 | 00000 |
Check Valves with Barbed Fittings
Barbs grip onto tubing, providing a secure hold. These valves open to allow flow in one direction and close when flow stops or reverses.
Nylon valves are more impact resistant than PVC or polypropylene valves.
Polypropylene valves are more corrosion resistant than PVC or nylon valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
| For Inlet Tube ID | Pipe Size | For Outlet Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × NPT Male Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 1/8 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 2 5/8" | 0000000 | 000000 |
| 1/8" | 1/4 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 2 3/4" | 0000000 | 00000 |
| 1/4" | 1/4 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 3/16" | 00000000 | 00000 |
| 5/16" | 1/4 | __ | 1 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 3/16" | 00000000 | 00000 |
| 3/8" | 1/8 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/8" | 00000000 | 00000 |
| 3/8" | 1/4 | __ | 1 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 3/16" | 00000000 | 00000 |
| 1/2" | 1/4 | __ | 1 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 3/16" | 00000000 | 00000 |
Barbed Male Inlet × Barbed Male Outlet | ||||||||||
| 1/8" | __ | 1/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 2 5/8" | 0000000 | 00000 |
| 1/8" | __ | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/16" | 0000000 | 00000 |
| 1/4" | __ | 1/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/16" | 0000000 | 00000 |
| 1/4" | __ | 1/4" | 0.5 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/2" | 0000000 | 00000 |
| 5/16" | __ | 5/16" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/2" | 0000000 | 00000 |
| 3/8" | __ | 3/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/2" | 0000000 | 00000 |
| 3/8" | __ | 1/2" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/2" | 0000000 | 00000 |
| 1/2" | __ | 1/2" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/2" | 0000000 | 00000 |
NPT Male Inlet × Barbed Male Outlet | ||||||||||
| __ | 1/8 | 1/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 2 5/8" | 0000000 | 00000 |
| __ | 1/8 | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 1/8" | 0000000 | 00000 |
| __ | 1/4 | 1/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 2 3/4" | 0000000 | 00000 |
| __ | 1/4 | 3/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 3/16" | 0000000 | 00000 |
| __ | 1/4 | 1/2" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | Dark Gray | 3 3/16" | 0000000 | 00000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
| For Inlet Tube ID | Pipe Size | For Outlet Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × Barbed Male Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8" | __ | 1/8" | 0.1 | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 3/8" | 0000000 | 00000 |
| 1/8" | __ | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 11/16" | 0000000 | 0000 |
| 3/16" | __ | 1/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 9/16" | 0000000 | 0000 |
| 3/16" | __ | 3/16" | 0.2 | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 3/4" | 0000000 | 0000 |
| 1/4" | __ | 1/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 11/16" | 0000000 | 0000 |
| 1/4" | __ | 1/4" | 0.3 | 125 psi @ 70° F | 1 | 35° to 140° | White | 2 1/16" | 0000000 | 0000 |
| 5/16" | __ | 5/16" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 1/2" | 0000000 | 00000 |
| 3/8" | __ | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 1/2" | 0000000 | 00000 |
| 3/8" | __ | 3/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 1/2" | 0000000 | 00000 |
| 1/2" | __ | 1/2" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 1/8" | 0000000 | 00000 |
Barbed Male Inlet × NPT Male Outlet | ||||||||||
| 1/8" | 1/8 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 5/8" | 00000000 | 0000 |
| 1/8" | 1/4 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 13/16" | 00000000 | 0000 |
| 3/16" | 1/8 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 13/16" | 00000000 | 0000 |
| 1/4" | 1/4 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 2 1/8" | 00000000 | 0000 |
| 3/8" | 1/4 | __ | 1 | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 3/16" | 00000000 | 00000 |
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Buna-N Rubber
| For Inlet Tube ID | Pipe Size | For Outlet Tube ID | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Color | End-to-End Lg. | Each | |
Barbed Male Inlet × Barbed Male Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8" | __ | 1/8" | 0.1 | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 3/8" | 0000000 | 00000 |
| 1/8" | __ | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 11/16" | 0000000 | 0000 |
| 3/16" | __ | 3/16" | 0.2 | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 3/4" | 0000000 | 0000 |
| 3/16" | __ | 1/4" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 7/8" | 0000000 | 0000 |
| 1/4" | __ | 1/4" | 0.3 | 125 psi @ 70° F | 1 | 35° to 140° | White | 2 1/16" | 0000000 | 0000 |
| 5/16" | __ | 5/16" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 1/2" | 0000000 | 00000 |
| 3/8" | __ | 3/8" | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 1/2" | 0000000 | 00000 |
| 1/2" | __ | 1/2" | 1 | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 1/2" | 0000000 | 00000 |
Barbed Male Inlet × NPT Male Outlet | ||||||||||
| 1/8" | 1/8 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 5/8" | 00000000 | 0000 |
| 1/8" | 1/4 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 1 13/16" | 00000000 | 0000 |
| 1/4" | 1/4 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 2 1/8" | 00000000 | 0000 |
| 5/16" | 1/4 | __ | Not Rated | 125 psi @ 70° F | 1 | 35° to 140° | White | 3 3/16" | 00000000 | 00000 |
Check Valves with Barbed Fittings for Harsh Chemicals
Prevent backflow in chemical tubing lines. These valves have barbed fittings that grip onto tubing, providing a secure hold. The plastic body and fluoroelastomer seal provide excellent chemical resistance. Valves open to allow flow in one direction and close when flow stops or reverses.
Polypropylene valves are more corrosion resistant than nylon valves.
Nylon valves are more impact resistant than polypropylene valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Acetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene, Water, Xenon, Xylene
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
- For Use With: Acetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene, Water, Xenon, Xylene
- Ball Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber