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Polyconn quick exhaust valves are designed for the rapid purge of air or exhaust from a pneumatic system. They are most commonly used at cylinder ports to significantly increase cylinder speed, particularly in return cycles. Our quick exhaust valves can also be used for valving or other pneumatic applications where a quick alleviation of air pressure or exhaust would be advantageous.

All of Polyconns quick exhaust valves are manufactured from forged brass, and nickel plated for superior corrosion resistance. They include nylon or NBR 70 seal gaskets. Our quick exhaust valves are available in sizes from 18 to 1 NPT F, to fit nearly any size cylinder or implement. They have a working pressure range from 0 to 150 PSI. Their operational temperature range is 0F to 160F.

Pressure Range: 75, 125, 145, 150, 165, 200 and 225 PSI
Set Pressure Tolerances: 3% of Set Pressure
Temperature Range: -65F to 400F
Construction: Seat Cap and Piston C360 Brass (ASTM B-16), 17-7 Stainless Steel Spring and Silicone Seal.
Bubble Tight to Within 5 psig for Set Pressure 50 psig or Less, Bubble Tight to Within 10% for Set Pressures Greater than 50 psig. 100% Testing or 2.5 AQL Sample Testing, Conforming to AP1 527.
Stamped with the UV and NB Symbols.
Everseal 483 Sealant Standard.

Pressure Range: 75, 125, 145, 150, 165, 200 and 225 PSI
Set Pressure Tolerances: 3% of Set Pressure
Temperature Range: -65F to 400F
Construction: Seat Cap and Piston C360 Brass (ASTM B-16), 17-7 Stainless Steel Spring and Silicone Seal.
Bubble Tight to Within 5 psig for Set Pressure 50 psig or Less, Bubble Tight to Within 10% for Set Pressures Greater than 50 psig. 100% Testing or 2.5 AQL Sample Testing, Conforming to AP1 527.
Stamped with the UV and NB Symbols.
Everseal 483 Sealant Standard.

Pressure Range: 25 to 300 PSI
Set Pressure Tolerances: 3% of Set Pressure
Temperature Range: -65F to 400F
Construction: Seat Cap and Piston C360 Brass (ASTM B-16), 17-7 Stainless Steel Spring and Silicone Seal.
Bubble Tight to Within 5 PSIG for Set Pressure 50 PSIG or Less, Bubble Tight to Within 10% for Set Pressures Greater than 50 PSIG.
Stamped with the UV and NB Symbols.