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 Precision Flow-Adjustment Valves
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About On/Off Valves
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Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Ammonia, Argon, Butane, Carbon Dioxide, Chloride, Fluoride, Fluorocarbon, Germane, Halide, Helium, Hydrogen, Krypton, Laser Gas, Natural Gas, Neon, Nitrogen, Oxygen, Silane, Sulfur Hexafluoride, Tungsten Hexafluoride, Xenon
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
- Compatible With: Swagelok® VCR
Polished to at least a 15 Ra finish on the inside, these fittings have an ultra-smooth interior surface that helps prevent contamination. Also known as ultra-high-purity fittings, they’re packed in a Class 100 clean room, cleaned, and double bagged. They are commonly used in semiconductor applications. Fittings use a metal gasket (sold separately), which generates fewer particles than a rubber gasket and creates a strong seal in high-pressure and high-vacuum applications. Fittings are 316 stainless steel for excellent corrosion resistance.
To assemble, place a gasket between the gasket ends before gently rotating the female-threaded fitting onto the male-threaded fitting. Tighten until 1/8 of a turn past finger tight.
Choose threaded fittings to attach directly to other fittings.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Pipe Size  | Material | Max. Pressure | Max. Vacuum | Interior Smoothness, Ra | Environmental Rating | Each | |
NPT Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | 316L Stainless Steel | 5,100 psi @ 72° F | 10 -11 torr @ 72° F | 5 | Fed. Std. Class 100 | 00000000 | 0000000 |
| For Tube OD | Material | Max. Pressure | Max. Vacuum | Interior Smoothness, Ra | Environmental Rating | Each | |
| 1/4" | 316L Stainless Steel | 5,100 psi @ 72° F | 10 -11 torr @ 72° F | 5 | Fed. Std. Class 100 | 00000000 | 000000 |
| For Tube OD | Nut Material | Max. Pressure | Max. Vacuum | Lg. | Each | |
Male | ||||||
|---|---|---|---|---|---|---|
| 1/4" | 316L Stainless Steel | 5,100 psi @ 72° F | 10 -11 torr @ 72° F | 17/32" | 00000000 | 00000 |
| 1/4" | 316L Stainless Steel | 5,100 psi @ 72° F | 10 -11 torr @ 72° F | 23/32" | 0000000 | 0000 |
Female | ||||||
| 1/4" | 316L Stainless Steel | 5,100 psi @ 72° F | 10 -11 torr @ 72° F | 13/16" | 0000000 | 0000 |
Retaining
Tabs
Nickel gaskets are softer than stainless steel gaskets, so they won’t wear down sealing surfaces as much, and they’re easier to tighten. They’re reactive to carbon monoxide and ozone, so they shouldn’t be used with those chemicals.
Hard and heat resistant, stainless steel gaskets can be used in a wider range of applications than nickel gaskets such as carbon monoxide and ozone. However, they’re harder to tighten than nickel gaskets, and they’ll wear down sealing surfaces more quickly.
Silver-plated stainless steel gaskets are softer than unfinished stainless steel gaskets, so they won’t wear down sealing surfaces as much, and they’re easier to tighten. However, they oxidize when exposed to air, and silver particles might flake off during assembly.
Gaskets with retaining tabs stay in place during installation, so you don’t have to hold the gasket while fastening fittings together. This also means they’re less likely to scratch or nick your fittings by rotating during installation.
| For Tube OD | Max. Vacuum | Environmental Rating | Each | |
Nickel Gasket | ||||
|---|---|---|---|---|
| 1/4" | 10 -11 torr @ 72° F | Fed. Std. Class 100 | 00000000 | 00000 |
316L Stainless Steel Gasket | ||||
| 1/4" | 10 -11 torr @ 72° F | Fed. Std. Class 100 | 0000000 | 0000 |
Silver-Plated 316L Stainless Steel Gasket | ||||
| 1/4" | 10 -11 torr @ 72° F | Fed. Std. Class 100 | 00000000 | 0000 |
316L Stainless Steel Gasket with Retaining Tabs | ||||
| 1/4" | 10 -11 torr @ 72° F | Fed. Std. Class 100 | 00000000 | 0000 |
On/Off Valves with Push-to-Connect Fittings for Chemicals
Push to Connect ×
Push to Connect
Insert tubing into the fittings on these valves—no heat, solder, or flux required. To withstand aggressive and corrosive solutions, they have a chemical-resistant fluoroelastomer seal and a plastic body.
Full-port valves do not restrict flow.
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.
- Valve Type: Ball
- For Use With:
Connector: Air, Argon, Carbon Dioxide, Citric Acid, Deionized Water, Ethylene Glycol, Helium, Isopropyl Alcohol, Krypton, Natural Gas, Neon, Nitrogen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hypochlorite, Sulfuric Acid, Water, Xenon
Adapter: Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Helium, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hypochlorite, Sulfuric Acid, Water, Xylene - Ball Material: PVDF Plastic
- Seal Material: Fluoroelastomer Rubber
- Seat Material: Fluoroelastomer Rubber
| Pipe Size | For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Port Type | Port-to-Port Lg. | Each | |
90° Elbow Adapter, Push to Connect × Female NPT Threaded | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4 | 1/4" | 0.7 | 125 psi @ 140° F | 35° to 140° | Full | 1 1/4" | 000000000 | 000000 |
| 1/4 | 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 1/4" | 000000000 | 00000 |
| 1/4 | 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 1/4" | 000000000 | 00000 |
| 3/8 | 1/4" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 1/4" | 000000000 | 00000 |
| 3/8 | 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 1/4" | 000000000 | 00000 |
| 3/8 | 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 1/4" | 000000000 | 00000 |
| 1/2 | 1/4" | Not Rated | 125 psi @ 140° F | 35° to 140° | Standard | 1 5/8" | 000000000 | 00000 |
| 1/2 | 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Standard | 1 5/8" | 000000000 | 00000 |
| 1/2 | 1/2" | 2.8 | 125 psi @ 140° F | 35° to 140° | Standard | 1 5/8" | 000000000 | 00000 |
90° Elbow Adapter, Push to Connect × Male NPT Threaded | ||||||||
| 1/8 | 1/4" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
| 1/8 | 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
| 1/8 | 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
| 1/4 | 1/4" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
| 1/4 | 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
| 1/4 | 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
| 3/8 | 1/4" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 3/4" | 000000000 | 00000 |
| 3/8 | 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 3/4" | 000000000 | 00000 |
| 3/8 | 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 3/4" | 000000000 | 00000 |
| 1/2 | 1/4" | Not Rated | 125 psi @ 140° F | 35° to 140° | Standard | 1 3/4" | 000000000 | 00000 |
| 1/2 | 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Standard | 1 3/4" | 000000000 | 00000 |
| 1/2 | 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Standard | 1 3/4" | 000000000 | 00000 |
90° Elbow Adapter, Push to Connect × Push to Connect | ||||||||
| __ | 1/4" × 3/8" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 3/8" | 000000000 | 00000 |
| __ | 1/4" × 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
| __ | 3/8" × 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
90° Elbow Connector, Push to Connect × Push to Connect | ||||||||
| __ | 1/4" × 1/4" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 3/8" | 000000000 | 00000 |
| __ | 3/8" × 3/8" | 1.9 | 125 psi @ 140° F | 35° to 140° | Full | 1 3/8" | 000000000 | 00000 |
| __ | 1/2" × 1/2" | Not Rated | 125 psi @ 140° F | 35° to 140° | Full | 1 11/16" | 000000000 | 00000 |
Precision Flow-Adjustment Valves with Barbed Fittings for Fuel
- Valve Type: Needle
- For Use With: See Table
- Seal Material: See Table
Add fine flow control to tubing lines for butane, diesel fuel, fuel oil, gasoline, kerosene, natural gas, and propane. These valves have a barbed fitting that grips onto tubing, providing a secure hold. Turn the handle to adjust flow in small increments. Valves have metal-to-metal seats that resist temperature fluctuations.
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 Tube ID | Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Seal Material | Port-to-Port Lg. | For Use With | Each | |
Brass Body | |||||||||
|---|---|---|---|---|---|---|---|---|---|
NPTF Male × Barbed | |||||||||
| 3/8" | 3/8 | 1.5 | 200 psi @ 70° F | -10° to 400° | Buna-N Rubber | 1 1/8" | Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 000000 |
| 5/8" | 3/8 | 2.9 | 200 psi @ 70° F | -30° to 225° | Fluorocarbon Rubber | 1 5/16" | Oil, Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 00000 |
| 5/8" | 1/2 | 4.4 | 200 psi @ 70° F | -10° to 400° | Buna-N Rubber | 1 1/2" | Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 00000 |
| 3/4" | 1/2 | 5.5 | 200 psi @ 70° F | -10° to 400° | Fluorocarbon Rubber | 1 7/16" | Oil, Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane | 00000000 | 00000 |
Threaded Precision Flow-Adjustment Valves for Fuel
- Valve Type: Needle
- For Use With: Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Propane
- Seal Material: Fluorocarbon Rubber
Turn the handle to adjust the flow of butane, diesel fuel, fuel oil, gasoline, kerosene, natural gas, and propane in small increments. These valves have metal-to-metal seats that resist temperature fluctuations.
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.