About On/Off Valves
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Safety-Lockout Air On/Off Valves
A padlock (not included) locks the handle of these valves in the shut-off position. When valves are closed, the exhaust port vents air pressure so you can disconnect air tools safely. They meet OSHA lockout requirements to maintain safety and control in a compressed air system.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
Valves that comply with OSHA 29 CFR 1910.147 meet standards for the control of energy sources that could injure workers.
For technical drawings and 3-D models, click on a part number.
Flow Rate @ 100 psi | Overall | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Pipe Size  | Outlet Pipe Size | Exhaust Pipe Size | Flow Coefficient (Cv) | Min. | Max. | Max. Pressure, psi | Temp. Range, °F | Lg. | Wd. | Ht. | For Max. Padlock Shackle Dia. | Specifications Met | Each | |
Brass Body | ||||||||||||||
| 1 1/4 | 1 1/4 | 1/4 | 86 | Not Rated | Not Rated | 200 | 32° to 210° | 8" | 2 5/16" | 4 3/4" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 000000 |
| 1 1/2 | 1 1/2 | 1/4 | 140 | Not Rated | Not Rated | 200 | 32° to 210° | 8 3/16" | 2 13/16" | 5 1/4" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 000000 |
| 2 | 2 | 1/4 | 190 | Not Rated | Not Rated | 200 | 32° to 210° | 8 9/16" | 3 3/8" | 5 3/4" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 000000 |
Bronze Body | ||||||||||||||
| 1/4 | 1/4 | 1/4 | Not Rated | Not Rated | Not Rated | 200 | 50° to 200° | 4 7/8" | 1 1/16" | 3" | 1/4" | __ | 0000000 | 00000 |
| 3/8 | 3/8 | 1/4 | Not Rated | Not Rated | Not Rated | 200 | 50° to 200° | 4 7/8" | 1 1/16" | 3" | 1/4" | __ | 0000000 | 00000 |
| 1/2 | 1/2 | 1/4 | 15 | Not Rated | Not Rated | 200 | 50° to 200° | 4 15/16" | 1 3/16" | 3 1/16" | 1/4" | __ | 0000000 | 00000 |
| 3/4 | 3/4 | 1/4 | 51 | Not Rated | Not Rated | 200 | 50° to 200° | 6 7/16" | 1 13/16" | 3 11/16" | 1/4" | __ | 0000000 | 000000 |
| 1 | 1 | 1/4 | 68 | Not Rated | Not Rated | 200 | 50° to 200° | 7 5/16" | 2 1/4" | 4 3/8" | 1/4" | __ | 0000000 | 000000 |
Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Pipe Size | Outlet Pipe Size | Exhaust Thread Size | Flow Coefficient (Cv) | Max. Pressure, psi | Temp. Range, °F | Lg. | Wd. | Ht. | For Max. Padlock Shackle Dia. | Specifications Met | Each | |
Brass Body | ||||||||||||
| 1/4 | 1/4 | 10-32 | 6.29 | 200 | -40° to 350° | 4 5/8" | 1 1/8" | 2 5/8" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 000000 |
| 3/8 | 3/8 | 10-32 | 6.99 | 200 | -40° to 350° | 4 5/8" | 1 1/8" | 2 5/8" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 00000 |
| 1/2 | 1/2 | 10-32 | 19 | 200 | -40° to 350° | 4 15/16" | 1 5/16" | 2 13/16" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 00000 |
| 3/4 | 3/4 | 10-32 | 34.4 | 200 | -40° to 350° | 5 13/16" | 1 9/16" | 3 5/16" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 00000 |
| 1 | 1 | 10-32 | 50.1 | 200 | -40° to 350° | 6 3/16" | 1 15/16" | 3 11/16" | 9/32" | OSHA Compliant 29 CFR 1910.147 | 0000000 | 00000 |
Air On/Off Valves
Turn airflow on and off with these valves. They have two balls to independently shut off airflow to one of two outlets from a single source. When closed, they vent air pressure to the atmosphere so you can disconnect air tools safely.
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.
Number of Ports | Overall | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet | Outlet | Inlet Pipe Size | Outlet Pipe Size | Flow Coefficient (Cv) | Temp. Range, °F | Lg. | Wd. | Ht. | Ball Material | Each | |
NPT Female Inlet × NPT Female Outlet | |||||||||||
Bronze Body | |||||||||||
| 1 | 2 | 1 | 3/4 | 43 | -20° to 400° | 3 1/2" | 10" | 2 9/16" | Bronze | 0000000 | 0000000 |
| 1 | 2 | 1 1/4 | 3/4 | 43 | -20° to 400° | 3 1/2" | 10" | 2 9/16" | Bronze | 0000000 | 000000 |
NPT Female Inlet × NPT Male Outlet | |||||||||||
Brass Body | |||||||||||
| 1 | 2 | 1 | 3/4 | 30 | -40° to 365° | 5 5/8" | 8 1/8" | 2 13/16" | Chrome-Plated Brass | 0000000 | 00000 |
Threaded On/Off Valves for Refrigerant
- Valve Type: Ball
- For Use With: Refrigerant
- Seal Material: PTFE Plastic
- Specifications Met: NACE (National Association of Corrosion Engineers) MR0103, NACE (National Association of Corrosion Engineers) MR0175
Often used in HVAC or refrigeration systems, these valves are designed to control the flow of ammonia, nitrogen, and other harsh chemicals. To prevent accidental spills, a spring on the handle will automatically close the valve if you lose your grip. It’s also known as a deadman’s handle. The ball has a vent to relieve gas buildup when the valve is closed. Made from 316 stainless steel, these valves have excellent corrosion resistance.
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.
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Vacuum Rating, in. of Hg | End-to-End Lg. | For Refrigerant Number | Features | Each | |
316 Stainless Steel Body | |||||||||
|---|---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | |||||||||
| 1/4 | 8.4 | 2,000 psi @ 100° F | -20° to 500° | 29 | 2 1/16" | R-134A, R-717, R-728, R-744 | Vented Ball | 0000000 | 0000000 |
| 3/8 | 7.2 | 2,000 psi @ 100° F | -20° to 500° | 29 | 2 1/16" | R-134A, R-717, R-728, R-744 | Vented Ball | 0000000 | 000000 |
| 1/2 | 15 | 2,000 psi @ 100° F | -20° to 500° | 29 | 2 1/4" | R-134A, R-717, R-728, R-744 | Vented Ball | 0000000 | 000000 |
| 3/4 | 30 | 2,000 psi @ 100° F | -20° to 500° | 29 | 3" | R-134A, R-717, R-728, R-744 | Vented Ball | 0000000 | 000000 |
| 1 | 43 | 2,000 psi @ 100° F | -20° to 500° | 29 | 3 3/8" | R-134A, R-717, R-728, R-744 | Vented Ball | 0000000 | 000000 |
Flanged On/Off Valves for Chemicals
Bolt these valves to ANSI flanges—they meet ASME dimensional standards. They have a plastic body and a seal that withstand aggressive and corrosive solutions in chemical-processing applications.
PVC valves are the standard choice for most mild chemical processing systems. CPVC valves withstand higher temperatures than PVC valves, so they work well with systems that connect to a heater. Valves with a short lever handle are good for low-clearance lines because their lever takes up less space. Valves with flanged unions are easy to install and remove without disturbing your piping, making them ideal for lines that need frequent maintenance or cleaning. Bolt the flanged fitting to the pipe flange. Install and remove the valve by turning the union fitting.
Full-port valves do not restrict flow. Valves with a vented ball prevent pressure buildup from gases emitted by harsh chemicals, such as hydrochloric acid.
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: Hydrochloric Acid, Isopropyl Alcohol, Water
- Ball Material: PVC Plastic
- Seal Material: Fluoroelastomer Rubber
- Seat Material: PTFE Plastic
- For Flange Specifications Met: ASME B16.5
Bolts | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | Circle Dia. | No. of Holes | Hole Dia. | Included | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Vacuum Rating, in. of Hg | Port Type | End-to-End Lg. | Features | Each | |
Flanged Union × Flanged Union | ||||||||||||||
| 1/2 | 3 1/2" | 2 3/8" | 4 | 5/8" | No | 6 | 150 psi @ 100° F | 40° to 140° | 27 | Full | 6 5/16" | Vented Ball | 00000000 | 000000 |
| 3/4 | 3 7/8" | 2 3/4" | 4 | 5/8" | No | 38 | 150 psi @ 100° F | 40° to 140° | 27 | Full | 7 3/8" | Vented Ball | 00000000 | 00000 |
| 1 | 4 1/4" | 3 1/8" | 4 | 5/8" | No | 58 | 150 psi @ 100° F | 40° to 140° | 27 | Full | 8 3/16" | Vented Ball | 00000000 | 00000 |
| 1 1/2 | 5" | 3 7/8" | 4 | 5/8" | No | 117 | 150 psi @ 100° F | 40° to 140° | 27 | Full | 10 1/16" | Vented Ball | 00000000 | 000000 |
| 2 | 6" | 4 3/4" | 4 | 3/4" | No | 178 | 150 psi @ 100° F | 40° to 140° | 27 | Full | 11 1/2" | Vented Ball | 00000000 | 000000 |
- Valve Type: Ball
- For Use With: Hydrochloric Acid, Water
- Ball Material: CPVC Plastic
- Seal Material: Fluoroelastomer Rubber
- Seat Material: PTFE Plastic
- For Flange Specifications Met: ASME B16.5
Bolts | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | Circle Dia. | No. of Holes | Hole Dia. | Included | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Vacuum Rating, in. of Hg | Port Type | End-to-End Lg. | Features | Each | |
Flanged Union × Flanged Union | ||||||||||||||
| 1/2 | 3 1/2" | 2 3/8" | 4 | 5/8" | No | 6 | 250 psi @ 100° F | 40° to 210° | 27 | Full | 6 5/16" | Vented Ball | 00000000 | 000000 |
| 3/4 | 3 7/8" | 2 3/4" | 4 | 5/8" | No | 38 | 250 psi @ 100° F | 40° to 210° | 27 | Full | 7 3/8" | Vented Ball | 00000000 | 000000 |
| 1 | 4 1/4" | 3 1/8" | 4 | 5/8" | No | 58 | 250 psi @ 100° F | 40° to 210° | 27 | Full | 8 3/16" | Vented Ball | 00000000 | 000000 |
| 1 1/2 | 5" | 3 7/8" | 4 | 5/8" | No | 117 | 250 psi @ 100° F | 40° to 210° | 27 | Full | 10 1/16" | Vented Ball | 00000000 | 000000 |
| 2 | 6" | 4 3/4" | 4 | 3/4" | No | 178 | 250 psi @ 100° F | 40° to 210° | 27 | Full | 11 1/2" | Vented Ball | 00000000 | 000000 |