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New 1/4' NPT 165 PSI Air Compressor Relief Pressure Safety Valve, Tank Pop Off

Free shipping on orders over CA $49.99

CA $25.00

CA $ 12 .99 CA $12.99

In Stock

About this item

  • Relief pressure preset to 165 psi with flow rate of 64 SCFM
  • 1/4" male NPT threaded inlet connection
  • Brass construction and stainless steel spring for corrosion resistance
  • 250 degrees F maximum temperature for use in high temperature applications
  • ASME safety rated with UV and NB marks


This Control Devices SV-165 ASME safety valve has a brass body, a 165 psi relief pressure, a 1/4" 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 degrees 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 116 cubic feet per minute (CFM) flow rate and is suitable for low capacity pressure relief applications such as in home construction air compressors. Relief valves remove excess pressure or vacuum from a system. The valve openings allow fluids or gases to escape to decrease pressure, and then close once the valve reaches the reseating pressure limit. They also relieve excess vacuum by opening to release a gas into the system and then closing after it reaches its low-pressure limit. Some relief valves have an adjustment mechanism to set the pressure where the valve opens, making it suitable for various applications. Relief valves are rated according to the volume of liquid or gas that can flow through them and the material that the valve is constructed from must be suitable for the fluid or gas, which may be corrosive or at an extreme temperature, in which it operates. Relief valves are used in a variety of applications, such as air compressors, petrochemical and chemical manufacturing, natural gas processing, and power generation.


monte gensman
Reviewed in the United States on March 8, 2025
Works fine, easy install.
RRob
Reviewed in the United States on March 19, 2025
Perfect pressure relief valve. Came in quickly works great. What can I say?
Joe T.
Reviewed in the United States on August 15, 2024
Brought old air compressor back to life
Joe
Reviewed in the United States on December 10, 2024
good price
P. D. Clark
Reviewed in Canada on April 7, 2024
This release valve is exactly the one required for the 150 psi compressor. It came ahead of the expected delivery date.
Steven F. Lee
Reviewed in the United States on December 25, 2023
Used for a light duty 60 gal Chicago Pneumatic compressor. Rating for compressor way below rating of replacement relief valve, so no big deal. Recommend checking with seller prior to ordering a valve if you're using on an industrial rated compressor.
Alex Cormier
Reviewed in Canada on January 28, 2021
l`article est correct, le problème a été les 3 semaines de retard dans la livraison
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