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Your cart is empty.This Control Devices ST25-1A100 ASME safety valve has a brass body, a 100 psi relief pressure, a 1/4 inch male NPT threaded inlet connection, and a stainless steel pull ring for manual pressure relief. The valve's brass body, brass valve seat, and the zinc plated steel spring resist corrosion and can be used in operating temperatures up to 250 F. The preset relief pressure is accurate to within +/- 3 percent and a silicon O-ring provides a leak-proof seal to within +/- 10 percent of the relief pressure. This safety valve is American Society of Mechanical Engineers (ASME) safety rated and displays the UV mark for pressure vessel safety valves. It also displays the NB mark for certification in accordance with NB-501, National Board Certification of Pressure Relief Devices. This safety valve has a 94.6473 cubic feet per minute (CFM) flow rate and is suitable for pressure relief applications such as in home construction or industrial air compressors.
Brian Diver
Reviewed in the United States on August 13, 2024
I have this on my compressor and when it blows you need to have ear plugs and then it lets so much air out that it takes forever for the tank to fill back up. 1/2 hp compressor with a 7.5 gal tank.
Rodney Lewis
Reviewed in the United States on June 29, 2024
My old relief valve would pop off early. Thiss fixed it.
Ed from NM
Reviewed in the United States on May 5, 2024
I used this to bleed excess air from my compressor setup for my Airlift air bags in my truck. The airbags are rated for 100PSI max, so this prevents my compressor from overfilling them. Right at 100PSI it starts going off. It's loud, but it does the job. I also like that you can attach a key ring to the end of it and bleed the pressure manually if you need to.
sharon Vosefski
Reviewed in the United States on August 16, 2023
Happy my really old 50s compressor works. The valve was functioning to 30psi and I thought it was on its way out. This valve works great but only up to 80 something psi. It’s not adjustable and should be 100 psi. Maybe for my sake at 80 psi it won’t blow up!
Wendell Reeve
Reviewed in the United States on December 10, 2023
I tested the three I bought, and they all opened at the rated 100lbs, and dumped the air pressure down to 50lbs, when the valve closed. Very pleased with the quality.
Customer
Reviewed in the United States on August 5, 2020
The 100psi unit I received starts releasing at 83psi. The device I am supplying air to needs 85 minimum/ 110 maximum. Was hoping to set the regulator at 90psi and have this as a failsafe.It appears to be well made. Did not find a way to contact the seller through Amazon website.
E.R. Garnett
Reviewed in the United States on December 26, 2020
This so far, is a dependable air compressor part. Highly recommended.
John B.
Reviewed in the United States on October 22, 2020
Easy to install, works great. Only drawback was the pull ring is cheap and doesn't hold up. Replaced with key ring and all is good.
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