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 Pressure-Relief Valves
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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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Compact Pressure-Relief Valves
Due to their small size, these valves are often installed on tanks in low-clearance areas. They begin opening at the set pressure. Nylon valves fully open at about 10% over the set pressure and steel valves fully open at about 50% over the set pressure. Valves begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. All have a vent outlet to exhaust discharge directly. Set pressure is not adjustable.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air
- Temperature Range: Not Rated
Inlet | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Location | Maximum Pressure, psi | Relief Port Location | Overall Ht. | Specifications Met | Set Pressure, psi | 1-9 | 10-Up | |
NPTF Male Inlet and Relief Vent | |||||||||
| 1/8 | Bottom | 1 | Top | 1/2" | MS35670 | 0.3 | 0000000 | 00000 | 00000 |
| 1/4 | Bottom | Not Rated | Top | 1 1/8" | __ | 1 | 0000000 | 00000 | 00000 |
| 1/4 | Bottom | Not Rated | Top | 1 1/8" | __ | 7.5 | 0000000 | 00000 | 00000 |
| 1/4 | Bottom | Not Rated | Top | 1 1/8" | __ | 15 | 0000000 | 00000 | 00000 |
| 3/8 | Bottom | Not Rated | Top | 1 3/16" | __ | 1 | 0000000 | 00000 | 00000 |
| 3/8 | Bottom | Not Rated | Top | 1 3/16" | __ | 7.5 | 0000000 | 00000 | 00000 |
| 1/2 | Bottom | Not Rated | Top | 1 3/8" | __ | 1 | 0000000 | 00000 | 00000 |
| 1/2 | Bottom | Not Rated | Top | 1 3/8" | __ | 7.5 | 0000000 | 00000 | 00000 |
- For Use With: Grease, Oil
- Temperature Range: Not Rated
Inlet | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Maximum Pressure, psi | Relief Port Location | Overall Ht. | Specifications Met | Set Pressure, psi | 1-9 | 10-Up | |
NPTF Male Inlet and Relief Vent | |||||||||
| 1/8 | Bottom | 5 | Top | 1/2" | MS35670 | 1 | 000000 | 00000 | 00000 |
| 1/8 | Bottom | 15 | Top | 1/2" | MS35670 | 7.5 | 000000 | 0000 | 0000 |
| 1/8 | Bottom | 25 | Top | 1/2" | MS35670 | 15 | 000000 | 0000 | 0000 |
| 1/8 | Bottom | 80 | Top | 1/2" | MS35670 | 45 | 000000 | 0000 | 0000 |
| 1/8 | Bottom | 140 | Top | 9/16" | MS35670 | 80 | 0000000 | 0000 | 0000 |
| 1/8 | Bottom | 200 | Top | 1/2" | __ | 100 | 0000000 | 0000 | 0000 |
| 1/8 | Bottom | 650 | Top | 1/2" | __ | 400 | 0000000 | 0000 | 0000 |
Miniature Ultra-High-Pressure-Regulating Valves for Water, Air, and Inert Gas
- For Use With: Water, Air, Argon
- Temperature Range: -15° to 165° F
For extremely high-pressure applications in tight spots, these valves handle the same inlet pressures as other ultra-high-pressure-regulating valves within a smaller footprint. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All have two gauge ports. Body is nickel-plated aluminum for good corrosion resistance. Valves are no-bleed style, so they keep the process gas contained within the valve.
For technical drawings and 3-D models, click on a part number.
Air-Exhaust Control Valves
Allow airflow into your equipment and then quickly vent exhaust air to the atmosphere without routing it back through a directional control valve to speed up the movement of equipment. NPTF (Dryseal) threads are compatible with NPT threads. Also known as quick exhaust valves.
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.
Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | Inlet Size | Outlet Size | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Body Material | Lg. | Wd. | Ht. | Each | |
Threaded Female Inlet × Threaded Male Outlet | |||||||||||
| 3 | 1/8 NPTF | 1/8 NPTF | 6 | 0.1 | 30-125 | Aluminum and Brass | 1/2" | 1/2" | 1 13/16" | 0000000 | 000000 |
Elbow Air-Exhaust Control Valves
Inlet × Threaded
Female Outlet
The 90° elbow shape allows you to install these valves in tight spaces. They quickly vent exhaust air to the atmosphere or divert it to another place in your system to speed up the movement of air cylinders. Also known as quick exhaust valves.
NPTF (Dryseal) threads are compatible with NPT threads.
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.
For technical drawings and 3-D models, click on a part number.
Valves | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Repair Kits | ||||||||||||||
| No. of Flow Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Body Material | Lg. | Wd. | Ht. | Each | Includes | Each | ||
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||||
| 3 | 1/4 NPTF | 1/4 NPTF | Threaded | 159 | 2.71 | 30-125 | Aluminum | 1 3/4" | 1 7/8" | 2 9/16" | 0000000 | 000000 | Diaphragm | 00000000 | 000000 |
| 3 | 3/8 NPTF | 3/8 NPTF | Threaded | __ | 3.13 | 30-125 | Zinc | 1 3/4" | 1 7/8" | 2 9/16" | 0000000 | 000000 | Diaphragm | 00000000 | 00000 |