About Backflow-Prevention Valves
More
About On/Off Valves
More
How to 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.
More
Slide-In Threaded On/Off Valves
Control flow in passageways of manifolds and valve mounting blocks without external pipes. Also known as cartridge valves, they slide into unthreaded holes and secure in place with the included set screw. These valves are ideal for testing and sampling applications because you can quickly open and close them with a toggle or button.
Toggle-switch valves stay open until you flip them closed. Since they don’t need to be held open, they’re often used to dispense large samples. The toggle’s position shows you if they’re open or closed.
Push-button valves open when you press the button. When released, the button springs back and automatically stops flow. They’re ideal for intermittent use and controlling flow to avoid spills.
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.
- Valve Type: Stem
- For Use With: Air, Oil, Water
- Seal Material: Buna-N Rubber
Required Hole | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Valve Starting Position | Return Actuation | Port-to-Port Lg. | Groove Wd. | Dia. | Dp. | Set Screw Included | Each | |
UNF Female × Unthreaded | ||||||||||||
| 10-32 | 0.1 | 125 psi @ 180° F | -25° to 180° | Normally Closed | Manual | 3/8" | 0.147" | 0.437"-0.440" | 1.030" | Yes | 00000000 | 000000 |
UNF Male × Unthreaded | ||||||||||||
| 10-32 | 0.1 | 125 psi @ 180° F | -25° to 180° | Normally Closed | Manual | 5/8" | 0.147" | 0.437"-0.440" | 1.030" | Yes | 00000000 | 00000 |
- Valve Type: Stem
- For Use With: Air, Oil, Water
- Seal Material: Buna-N Rubber
Required Hole | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Valve Starting Position | Return Actuation | Port-to-Port Lg. | Groove Wd. | Dia. | Dp. | Set Screw Included | Each | |
UNF Female × Unthreaded | ||||||||||||
| 10-32 | 0.1 | 125 psi @ 180° F | -25° to 180° | Normally Closed | Spring | 3/8" | 0.147" | 0.437"-0.440" | 1.030" | Yes | 00000000 | 000000 |
UNF Male × Unthreaded | ||||||||||||
| 10-32 | 0.1 | 125 psi @ 180° F | -25° to 180° | Normally Closed | Spring | 5/8" | 0.147" | 0.437"-0.440" | 1.030" | Yes | 00000000 | 00000 |
High-Cycling Check Valves
With internal components that resist wear from frequent operation, these valves can cycle as often as once per second. Barbed fittings and unthreaded fittings grip onto tubing, providing a secure hold. All valves open to allow flow in one direction and close when flow stops or reverses.
Nylon valves are more impact resistant than polypropylene valves.
Polypropylene valves are more corrosion resistant than nylon valves.
- For Use With: Air, Water
- Diaphragm Material: See table
- Seal Material: See table
| For Tube ID | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Diaphragm Material | Seal Material | Color | End-to-End Lg. | Each | |
Unthreaded Male Inlet × Unthreaded Male Outlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluorosilicone Rubber | Fluorosilicone Rubber | Black | 1 5/8" | 00000000 | 00000 |
- For Use With: Air, Water
- Diaphragm Material: See table
- Seal Material: See table
| For Tube ID | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Diaphragm Material | Seal Material | Color | End-to-End Lg. | Each | |
Unthreaded Male Inlet × Unthreaded Male Outlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluoroelastomer Rubber | Fluoroelastomer Rubber | White | 1 5/8" | 00000000 | 00000 |
| 1/8" | 15 psi @ 70° F | 0.5 | -20° to 250° | Fluorosilicone Rubber | Fluorosilicone Rubber | Black | 1 5/8" | 000000000 | 0000 |
Press-In Flow-Control Orifices
- For Use With: Air, Argon, Carbon Dioxide, Helium, Neon, Nitrogen, Oil, Water, Xenon
- Max. Pressure: 4,000 psi @ 70° F
Press these orifices into machined holes in connectors, manifolds, and other custom parts. They’re also known as flow restrictors and precision orifice valves. Use them to throttle, vent, bleed, or regulate the flow of water, oil, and inert gas.
Available Orifice Diameters | ||
|---|---|---|
| Orifice Dia. | Water Flow | Air Flow |
| 0.01" | 0.016 gpm @ 40 psi | 4.7 scfh @ 40 psi |
| 0.018" | 0.046 gpm @ 40 psi | 13.2 scfh @ 40 psi |
| 0.021" | 0.061 gpm @ 40 psi | 17.8 scfh @ 40 psi |
| 0.025" | 0.089 gpm @ 40 psi | 27.5 scfh @ 40 psi |
| 0.029" | 0.12 gpm @ 40 psi | 37.1 scfh @ 40 psi |
| 0.035" | 0.177 gpm @ 40 psi | 52.5 scfh @ 40 psi |
| 0.042" | 0.247 gpm @ 40 psi | 76.9 scfh @ 40 psi |
| 0.055" | 0.43 gpm @ 40 psi | 132 scfh @ 40 psi |
| Lg. | OD | For Hole Dia. | Each | |
303 Stainless Steel Body | ||||
|---|---|---|---|---|
| 1/8" | 1/4" | 0.257" | 0000000 | 000000 |