Matching Flow Diagrams to Replace an Air Directional Control Valve
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Choosing an Air Directional Control Valve
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About Air Preparation
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About Flow Control Valves
Also known as cylinder speed controls, flow control valves let you control the extension or retraction speed of your air cylinder. They regulate airflow as it passes from the valve's inlet to its outlet. Air flows freely in the opposite direction.
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Safety Lockout Valves for SMC Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)
Prevent accidental start-up when servicing equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock (not included). Valves help your process comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect the safety lockout valve to another SMC modular component with the same series number. They come with mounting brackets to attach the valve to a wall or equipment.
Valves | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | |||||||||
Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Each | Each | ||
NPT Female Inlet and Outlet | |||||||||||
VHS20 Series | |||||||||||
| 1/8 | 1/8 | 28 scfm @ 100 psi | 145 | 140° | Red | 2 7/8" | 1 5/8" | 000000 | 000000 | 000000 | 00000 |
| 1/4 | 1/4 | 35 scfm @ 100 psi | 145 | 140° | Red | 2 7/8" | 1 5/8" | 000000 | 00000 | 000000 | 0000 |
VHS30 Series | |||||||||||
| 1/4 | 1/4 | 53 scfm @ 100 psi | 145 | 140° | Red | 3 3/8" | 2 1/8" | 000000 | 00000 | 000000 | 0000 |
| 3/8 | 3/8 | 91 scfm @ 100 psi | 145 | 140° | Red | 3 3/8" | 2 1/8" | 000000 | 00000 | 000000 | 0000 |
VHS40 Series | |||||||||||
| 1/4 | 1/4 | 79 scfm @ 100 psi | 145 | 140° | Red | 4 3/8" | 2 3/4" | 0000000 | 00000 | 000000 | 0000 |
| 3/8 | 3/8 | 101 scfm @ 100 psi | 145 | 140° | Red | 4 3/8" | 2 3/4" | 000000 | 00000 | 000000 | 0000 |
| 1/2 | 1/2 | 180 scfm @ 100 psi | 145 | 140° | Red | 4 3/8" | 2 3/4" | 000000 | 00000 | 000000 | 0000 |
| 3/4 | 3/4 | 141 scfm @ 100 psi | 145 | 140° | Red | 4 1/2" | 2 3/4" | 000000 | 00000 | 000000 | 00000 |
VHS50 Series | |||||||||||
| 3/4 | 3/4 | 268 scfm @ 100 psi | 145 | 140° | Red | 5 1/8" | 3 1/2" | 000000 | 00000 | 000000 | 00000 |
| 1 | 1 | 409 scfm @ 100 psi | 145 | 140° | Red | 5 1/8" | 3 1/2" | 000000 | 00000 | 000000 | 00000 |
Safety Lockout Valves for Festo Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)
Prevent accidental start-up when servicing equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock (not included). Valves help your process comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect the safety lockout valve to another Festo modular component with the same series number. They come with mounting brackets to attach the valve to a wall or equipment.
Valves | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | ||||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Features | Each | Each | ||
NPT Female Inlet and Outlet | ||||||||||||
MS4 Series | ||||||||||||
| 1/4 | 1/4 | 65 scfm @ 100 psi | 206 | 140° | Blue | 6" | 1 5/8" | Silencer | 0000000 | 000000 | 0000000 | 000000 |
| 3/8 | 3/8 | 65 scfm @ 100 psi | 206 | 140° | Blue | 6" | 2" | Silencer | 0000000 | 000000 | 0000000 | 00000 |
MS6 Series | ||||||||||||
| 1/2 | 1/2 | 130 scfm @ 100 psi | 265 | 140° | Blue | 10 1/8" | 2 1/2" | Silencer | 0000000 | 000000 | 0000000 | 00000 |
| 3/4 | 3/4 | 130 scfm @ 100 psi | 265 | 140° | Blue | 10 1/8" | 2 3/4" | Silencer | 0000000 | 000000 | 0000000 | 00000 |
MS9 Series | ||||||||||||
| 1 | 1 | 560 scfm @ 100 psi | 290 | 140° | Blue | 18 1/4" | 3 1/2" | Silencer | 0000000 | 000000 | 0000000 | 00000 |
Safety Lockout Valves for ASCO Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)
Prevent accidental start-up when servicing equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock (not included). Valves help your process comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect the safety lockout valve to another ASCO Numatics modular component with the same series number. They come with mounting brackets to attach the valve to a wall or equipment.
Valves | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | |||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Each | Each | ||
NPT Female Inlet and Outlet | |||||||||||
651 Series | |||||||||||
| 1/8 | 1/8 | 65 scfm @ 100 psi | 232 | 120° | Red | 5" | 2" | 0000000 | 000000 | 0000000 | 000000 |
| 1/4 | 1/4 | 215 scfm @ 100 psi | 232 | 120° | Red | 5" | 2" | 0000000 | 00000 | 0000000 | 00000 |
652 Series | |||||||||||
| 3/8 | 3/8 | 390 scfm @ 100 psi | 232 | 120° | Red | 5 1/4" | 2 5/8" | 0000000 | 00000 | 0000000 | 00000 |
| 1/2 | 1/2 | 520 scfm @ 100 psi | 232 | 120° | Red | 5 1/4" | 2 5/8" | 0000000 | 00000 | 0000000 | 00000 |
653 Series | |||||||||||
| 3/4 | 3/4 | 1,515 scfm @ 100 psi | 290 | 120° | Red | 6 1/2" | 3 1/2" | 0000000 | 000000 | 0000000 | 00000 |
| 1 | 1 | 2,400 scfm @ 100 psi | 290 | 120° | Red | 6 1/2" | 3 1/2" | 0000000 | 000000 | 0000000 | 00000 |
Safety Lockout Valves for ARO Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)
Prevent accidental start-up when servicing equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock (not included). Valves help your process comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect the safety lockout valve to another ARO modular component with the same series number. They come with mounting brackets to attach the valve to a wall or equipment.
Valves | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | |||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Each | Each | ||
NPT Female Inlet and Outlet | |||||||||||
1000 Series | |||||||||||
| 1/8 | 1/8 | 34 scfm @ 100 psi | 250 | 140° | Red | 2 1/8" | 1 5/8" | 00000000 | 000000 | 0000000 | 000000 |
| 1/4 | 1/4 | 61 scfm @ 100 psi | 250 | 140° | Red | 2 1/8" | 1 5/8" | 00000000 | 00000 | 0000000 | 00000 |
2000 Series | |||||||||||
| 3/8 | 3/8 | 85 scfm @ 100 psi | 250 | 140° | Red | 4" | 2 3/4" | 00000000 | 00000 | 00000000 | 00000 |
| 1/2 | 1/2 | 150 scfm @ 100 psi | 250 | 140° | Red | 4" | 2 3/4" | 00000000 | 00000 | 00000000 | 00000 |
Safety Lockout Valves for Wilkerson Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)
Prevent accidental start-up when servicing equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock (not included). Valves help your process comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect the safety lockout valve to another Wilkerson modular component with the same series number. They come with mounting brackets to attach the valve to a wall or equipment.
End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.
Valves | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | End Block Sets | ||||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Each | Each | Each | |||
NPT Female Inlet and Outlet | |||||||||||||
V40 Series | |||||||||||||
| 1/4 | 1/4 | 42 scfm @ 100 psi | 246 | 175° | Orange | 2 7/8" | 2" | 0000000 | 000000 | 00000000 | 00000 | 00000000 | 000000 |
V60 Series | |||||||||||||
| 3/8 | 3/8 | 190 scfm @ 100 psi | 246 | 175° | Orange | 3 1/2" | 2 7/8" | 0000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 |
| 1/2 | 1/2 | 258 scfm @ 100 psi | 246 | 175° | Orange | 3 1/2" | 2 7/8" | 0000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 |
V73 Series | |||||||||||||
| 1/2 | 1/2 | 561 scfm @ 100 psi | 246 | 175° | Orange | 3 7/8" | 3 1/4" | 0000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 |
| 3/4 | 3/4 | 678 scfm @ 100 psi | 246 | 175° | Orange | 3 7/8" | 3 1/4" | 0000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 |
Safety Lockout Valves for Parker Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)
Prevent accidental start-up when servicing equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock (not included). Valves help your process comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect the safety lockout valve to another Parker modular component with the same series number. They come with mounting brackets to attach the valve to a wall or equipment.
Valves | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | |||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Each | Each | ||
NPT Female Inlet and Outlet | |||||||||||
06 Series | |||||||||||
| 3/8 | 3/8 | 90 scfm @ 100 psi | 250 | 125° | Red | 3 1/8" | 2 3/4" | 0000000 | 000000 | 000000 | 000000 |
07 Series | |||||||||||
| 1/2 | 1/2 | 250 scfm @ 100 psi | 250 | 125° | Red | 3 1/8" | 2 3/4" | 0000000 | 000000 | 000000 | 00000 |
Safety Lockout Valves for Norgren Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)
Prevent accidental start-up when servicing equipment. These lockout valves exhaust downstream pressure and can be locked in the shut-off position using a padlock (not included). Valves help your process comply with OSHA regulations for lockout/tagout procedures.
Joiner clamps (sold separately) connect the safety lockout valve to another Norgren modular component with the same series number. They come with mounting brackets to attach the valve to a wall or equipment.
End block sets (sold separately) allow you to swap out filter/regulator/lubricator components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them. They come with mounting brackets.
Valves | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Joiner Clamps | End Block Sets | ||||||||||
| Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Locking Mechanism Color | Ht. | Wd. | Each | Each | Each | |||
NPT Female Inlet and Outlet | |||||||||||||
T73 Series | |||||||||||||
| 1/4 | 1/4 | 57 cfm @ 100 psi | 250 | 150° | Yellow | 2 3/4" | 2 1/8" | 00000000 | 000000 | 000000 | 000000 | 0000000 | 000000 |
| 3/8 | 3/8 | 116 cfm @ 100 psi | 250 | 150° | Yellow | 2 3/4" | 2 1/8" | 00000000 | 00000 | 000000 | 00000 | 0000000 | 00000 |
| 1/2 | 1/2 | 113 cfm @ 100 psi | 250 | 150° | Yellow | 2 3/4" | 2 1/8" | 00000000 | 00000 | 000000 | 00000 | 0000000 | 00000 |
T74 Series | |||||||||||||
| 3/8 | 3/8 | 160 cfm @ 100 psi | 250 | 150° | Yellow | 3" | 2 3/4" | 00000000 | 00000 | 000000 | 00000 | 0000000 | 00000 |
| 1/2 | 1/2 | 117 cfm @ 100 psi | 250 | 150° | Yellow | 3" | 2 3/4" | 00000000 | 00000 | 000000 | 00000 | 0000000 | 00000 |
| 3/4 | 3/4 | 113 cfm @ 100 psi | 250 | 150° | Yellow | 3" | 2 3/4" | 00000000 | 00000 | 000000 | 00000 | 0000000 | 00000 |
Safety-Lockout Single-Action Air Directional Control Valves
To prevent accidental start-up, these valves can be locked in their off position with a padlock. Also known as 3-way and 3/2 valves, they create one action, such as extending a cylinder. Valves direct airflow from the inlet to your equipment and exhaust return airflow to create motion. They're normally closed to block airflow until actuated. Return actuation is by hand, so they stay actuated and return to their starting position only when you move the actuator again. In the off position, they exhaust air pressure from the system, allowing equipment to reset so the action can be repeated. They help meet OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Overall | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating | Specifications Met | Lg. | Wd. | Ht. | Mounting Fasteners Included | Padlock Included | For Max. Padlock Shackle Dia. | Each | |
Threaded Female Inlet × Threaded Female Outlet | ||||||||||||||||
| 3 | 1/8 NPT | 1/8 NPT | Threaded | 5 | 0.65 | 15-145 | Not Rated | OSHA Compliant 29 CFR 1910.147 | 1 5/8" | 1 3/4" | 2 5/8" | No | No | 25/64" | 00000000 | 000000 |
| 3 | 1/4 NPT | 1/4 NPT | Threaded | 113 | 2 | 15-145 | Not Rated | OSHA Compliant 29 CFR 1910.147 | 2 3/4" | 2 1/2" | 4 1/4" | No | No | 25/64" | 00000000 | 00000 |
| 3 | 3/8 NPT | 3/8 NPT | Threaded | 116 | 3 | 15-145 | Not Rated | OSHA Compliant 29 CFR 1910.147 | 2 3/4" | 2 1/2" | 4 1/4" | No | No | 25/64" | 00000000 | 00000 |
| 3 | 1/2 NPT | 1/2 NPT | Threaded | 215 | 3.8 | 15-145 | Not Rated | OSHA Compliant 29 CFR 1910.147 | 2 3/4" | 2 1/2" | 4 1/4" | No | No | 25/64" | 00000000 | 00000 |
| 3 | 3/4 NPT | 3/4 NPT | Threaded | 361 | 6.4 | 15-145 | Not Rated | OSHA Compliant 29 CFR 1910.147 | 3 5/8" | 3 1/4" | 5 3/8" | No | No | 25/64" | 00000000 | 00000 |
| 3 | 1 NPT | 1 NPT | Threaded | 481 | 8.6 | 15-145 | Not Rated | OSHA Compliant 29 CFR 1910.147 | 3 5/8" | 3 1/4" | 5 3/8" | No | No | 25/64" | 00000000 | 00000 |
Air-Operated Air Flow Control Valves with Safety Shut-Off
Protect air-powered equipment in emergency shut-off situations—when system pressure drops, the air pilot signal stops and these valves automatically close to stop cylinder motion, even at a mid-stroke. They control the speed of air-powered equipment by adjusting the volume of airflow. A pressure-release button allows you to exhaust any trapped air pressure from the system after shut down. Install them in pairs on cylinder exhaust ports, and use tee connectors (not included) to direct exhaust air from the cylinder to the air pilot of the opposite valve, and to connect valves to a directional control valve. The elbow shape allows you to mount them directly to cylinder ports, eliminating additional tubing or piping between the cylinder and valve for better control and consistency than inline valves.
Two direction valves control airflow as it enters (meter in) and exits (meter out) equipment, and are often used to control the extension and retraction speed of an air cylinder at the same time. One direction valves control flow as air exits the cylinder (meter out) and moves from the inlet to the outlet.
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.
Female Inlet x
Threaded Male Outlet
Air Pilot | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Inlet Tube OD | Outlet Pipe Size | Pipe Size | Thread Size | Thread Type | Flow Coefficient (Cv) | Max. Flow Rate @ 73 psi | Max. Pressure, psi | Temp. Range, °F | Flow Adjustment Mechanism | Flow Control Type (ISO Designation) | Features | Each | |
PBT Plastic Body—One Direction | |||||||||||||
| 1/4" | 1/4 | 1/8 | __ | NPT | 0.18 | 7.2 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |
| 1/4" | 1/8 | __ | 10-32 | UNF | 0.18 | 7.2 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 00000 |
| 3/8" | 3/8 | 1/8 | __ | NPT | 0.18 | 7.2 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 00000 |
| For Inlet Tube OD, mm | Outlet Pipe Size | For Air Pilot Tube OD, mm | Flow Coefficient (Cv) | Maximum Flow Rate @ 87 psi | Maximum Flow Rate @ 100 psi | Max. Pressure, psi | Temp. Range, °F | Flow Adjustment Mechanism | Flow Control Type (ISO Designation) | Features | Each | |
Nylon Plastic Body—One Direction | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 1/4 | 4 | Not Rated | 16.77 scfm | __ | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 0000000 |
| 8 | 1/8 | 4 | Not Rated | 8.48 scfm | __ | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |
| 8 | 3/8 | 4 | Not Rated | 30.9 scfm | __ | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |
| 10 | 3/8 | 4 | Not Rated | 33.2 scfm | __ | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |
PBT Plastic Body—Two Direction | ||||||||||||
| 6 | 1/8 | 6 | 0.234 | __ | 8.1 scfm | 145 | 15° to 140° | Slotted Screw | Exiting Cylinder (Meter Out), Entering Cylinder (Meter In) | Pressure-Release Button | 00000000 | 000000 |
| 8 | 1/4 | 8 | 0.549 | __ | 18.9 scfm | 145 | 15° to 140° | Slotted Screw | Exiting Cylinder (Meter Out), Entering Cylinder (Meter In) | Pressure-Release Button | 00000000 | 000000 |