Choosing an Air Directional Control Valve
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About Noise, Filtration, and Flow Ratings
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Matching Flow Diagrams to Replace an Air Directional Control Valve
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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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Mufflers
Use these mufflers with air-powered tools, valves, and cylinders to reduce noise and filter exhaust fumes.
Style B is knurled for easy gripping.
Brass, bronze, and copper mufflers offer good corrosion resistance.
Nylon mufflers resist corrosion and will not deteriorate when exposed to oil.
Each | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | Thread Size  | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | Removes Particle Size Down To, microns | Noise Reduction Rating | 1-24 | 25-99 | 100-Up | |
Metric Male Nickel-Plated Copper Fitting—Copper Body | |||||||||||||
| B | M3 | 3 scfm @ 100 psi | 145 | 300° | 3/8" | 1/4" | Air | 100 | 13 dB | 0000000 | 00000 | 00000 | 00000 |
| B | M5 | 10 scfm @ 100 psi | 145 | 300° | 5/8" | 5/16" | Air | 100 | 18 dB | 0000000 | 0000 | 0000 | 0000 |
Metric Male Brass Fitting—Brass Body | |||||||||||||
| A | M5 | 17 scfm @ 100 psi | 145 | 175° | 11/16" | __ | Air, Inert Gas | 50 | 10-20 dB | 0000000 | 0000 | 0000 | 0000 |
| F | M5 | 5 scfm @ 100 psi | 175 | 175° | 3/8" | __ | Air, Inert Gas | 100 | 10-20 dB | 0000000 | 0000 | 0000 | 0000 |
Metric Male Nylon Plastic Fitting—Nylon Plastic Body | |||||||||||||
| G | M5 | 19 scfm @ 100 psi | 145 | 212° | 15/16" | 1/4" | Air, Inert Gas | 75 | 10-20 dB | 0000000 | 0000 | 0000 | 0000 |
Corrosion-Resistant Mufflers
Made entirely of stainless steel, these mufflers stand up to harsh, corrosive environments. Use them to reduce noise from equipment and to filter exhaust fumes.
316 stainless steel offers excellent corrosion resistance.
Each | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | Removes Particle Size Down To, microns | Noise Reduction Rating | 1-14 | 15-Up | ||
Metric Male 316 Stainless Steel Fitting | ||||||||||||
| B | M3 | 3 scfm @ 100 psi | 150 | 1000° | 3/8" | 1/4" | Air, Inert Gas | 100 | 18-20 dB | 0000000 | 000000 | 000000 |
| B | M5 | 6 scfm @ 100 psi | 150 | 1000° | 11/16" | 5/16" | Air, Inert Gas | 100 | 18-20 dB | 0000000 | 00000 | 00000 |
Flow-Control Mufflers
Adjust the flow by turning the screw. Use these mufflers with air-powered tools and cylinders to reduce noise and filter exhaust fumes.
For mufflers with an external hex drive, twist the screw and then tighten the hex nut with a wrench to secure. These mufflers are more secure than those with a thumb screw.
Brass, bronze, and nylon mufflers offer good corrosion resistance.
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | For Use With | Removes Particle Size Down To, microns | Noise Reduction Rating, dB | Features | 1-19 | 20-Up | |
Metric Male Nylon Plastic Fitting | |||||||||||
| M5 | 19 scfm @ 100 psi | 145 | 210° | 5/8" | Air, Inert Gas | 75 | 10-20 | Adjustable Airflow | 0000000 | 00000 | 00000 |
High-Noise-Reducing Mufflers
Install these mufflers in air-powered drills and other loud equipment. They filter exhaust fumes and reduce noise by 30 dB, a reduction that's equivalent to putting in earplugs.
Mufflers with pipe connections thread into NPT or metric threaded exhaust ports.
| Thread Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | Dia. | For Use With | Body Material | Noise Reduction Rating, dB | Each | |
Metric Male Polypropylene Plastic Fitting | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M5 | 14 scfm @ 72 psi | 145 | 140° | 9/16" | 1/4" | Air | Polypropylene Plastic | 30 | 0000000 | 00000 |
Air-Exhaust Flow Control Valves
Install these valves in the exhaust ports of air directional control valves to control exhaust air speed without needing access to your cylinder. They control flow in one direction as air moves from the inlet to the exhaust port (meter out). Air flows freely in the opposite direction. Valves exhaust to the atmosphere and include a muffler to reduce the exhaust noise.
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.