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Inlet Pipe Size
Outlet Pipe Size
Inlet Thread Type
Outlet Thread Type
Air Flow Check Valves
Threaded Female Inlet × Threaded Female Outlet
Push-to-Connect Female
Inlet × Push-to-Connect
Female Outlet
Inlet × Push-to-Connect
Female Outlet
Valves open to allow flow in one direction and close when flow stops or reverses.
Valves with push-to-connect ports are for use with plastic or soft metal tubing. Insert tubing into the port.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
For technical drawings and 3-D models, click on a part number.
NPT Female Inlet × NPT Female Outlet
Overall | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Pipe Size  | Outlet Pipe Size | Min. Flow Rate, scfm | Max. Flow Rate, scfm | Max. Pressure, psi | Min. Opening Pressure, psi | Temp. Range, °F | Lg. | Dia. | Each | |
316 Stainless Steel Body | ||||||||||
| 1/8 | 1/8 | 0 | 0.67 | 580 | 7 | 0° to 355° | 1 15/16" | 7/8" | 0000000 | 0000000 |
| 1/4 | 1/4 | 0 | 0.67 | 580 | 7 | 0° to 355° | 2 1/8" | 7/8" | 0000000 | 000000 |
| 3/8 | 3/8 | 0 | 0.67 | 580 | 7 | 0° to 355° | 2 11/16" | 1 1/8" | 0000000 | 000000 |
UNF Female Inlet × UNF Female Outlet
Overall | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Thread Size | Outlet Thread Size | Flow Coefficient (Cv) | Max. Flow Rate, scfm | Max. Pressure, psi | Min. Opening Pressure, psi | Temp. Range, °F | Lg. | Dia. | Each | |
Brass Body | ||||||||||
| 10-32 | 10-32 | 0.09 | 9.5 | 125 | 0.1 | -20° to 160° | 13/16" | 5/16" | 0000000 | 00000 |
Push-to-Connect Female Inlet × Push-to-Connect Female Outlet
Overall | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Inlet Tube OD | For Outlet Tube OD | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Temp. Range, °F | Lg. | Dia. | Color | Each | |
Nylon Plastic Body | ||||||||||
| 5/32" | 5/32" | 0.14 | 145 | 7 | 32° to 158° | 1 1/2" | 5/8" | Black | 000000 | 000000 |
| 1/4" | 1/4" | 0.16 | 145 | 7 | 32° to 158° | 1 5/8" | 3/4" | Black | 000000 | 00000 |
| 5/16" | 5/16" | 0.93 | 145 | 7 | 32° to 158° | 2 1/16" | 3/4" | Black | 000000 | 00000 |
| 3/8" | 3/8" | Not Rated | 145 | 7 | 32° to 158° | 2 1/2" | 15/16" | Black | 000000 | 00000 |
| 4mm | 4mm | 0.14 | 145 | 7 | 32° to 158° | 38.1mm | 15.9mm | Black | 000000 | 00000 |
| 6mm | 6mm | 0.16 | 145 | 7 | 32° to 158° | 41.3mm | 15.9mm | Black | 000000 | 00000 |
| 8mm | 8mm | 0.93 | 145 | 7 | 32° to 158° | 51mm | 19mm | Black | 000000 | 00000 |
| 10mm | 10mm | Not Rated | 145 | 7 | 32° to 158° | 63.5mm | 23.8mm | Black | 000000 | 00000 |
| 12mm | 12mm | Not Rated | 145 | 7 | 32° to 158° | 66.7mm | 23.8mm | Black | 000000 | 00000 |
Air Compressor Air Flow Check Valves
Prevent air from escaping an air storage tank when the air compressor is not running. These valves install on the inlet of a tank. They open to allow airflow into the tank and close when flow stops or reverses direction. They have a 1/8 NPT tapped unloader port with removable plug for connecting to a pressure switch.
NPT Female Inlet × NPT Male Outlet
Female Inlet × Male Outlet
| Inlet Pipe Size | Outlet Pipe Size | Max. Flow Rate, scfm | Max. Pressure, psi | Min. Opening Pressure, psi | Temp. Range, °F | Overall Lg. | Hex Size | Each | |
Brass Body | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8 | 1/2 | 20 | 450 | 3 | -15° to 400° | 2 11/16" | 7/8" | 0000000 | 000000 |
| 1/2 | 1/2 | 20 | 450 | 3 | -15° to 400° | 2 15/16" | 1" | 0000000 | 00000 |
| 3/4 | 3/4 | 30 | 450 | 3 | -15° to 400° | 2 3/4" | 1 3/16" | 0000000 | 00000 |
| 3/4 | 1 | 60 | 450 | 3 | -15° to 400° | 3 11/16" | 1 5/16" | 0000000 | 00000 |
| 1 | 1 | 60 | 450 | 3 | -15° to 400° | 4 1/8" | 1 1/2" | 0000000 | 00000 |
| 1 1/4 | 1 1/4 | 130 | 450 | 3 | -15° to 400° | 4 7/16" | 1 7/8" | 0000000 | 00000 |
Tube Compression Female Inlet × NPT Male Outlet
