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This Control Devices SF50-1A150 ASME safety valve has a brass body, a 150 psi relief pressure, a 1/2" 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 274 standard cubic feet per minute (SCFM) flow rate and is suitable for high capacity pressure relief applications such as in commercial 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.
Control Devices manufactures valves and other flow control devices. The company, founded in 1963, is headquartered in Fenton, MO.
Chris
Reviewed in the United States on August 19, 2024
Performed perfectly
Javier Porte
Reviewed in the United States on October 12, 2021
150 PSI valve did not lift until the pressure was over 190 PSI. That could cause a tank exploding because of no inspection before shipping.
Customer
Reviewed in the United States on May 25, 2020
there are TWO Items Being returned ! Both are the wrong Size they are 3/4 inch Not 1/2 in 3/4 inch will not fit in a 1/2 inch hole ,Package says 1/2 inch but are 3/4 inch NOW I don't need either One Do not Send any more . DO NOT SEND ANY MORE !!!!!!i
Chromedog
Reviewed in the United States on December 13, 2016
I like to replace these about every 5 years strictly as a safety standpoint. Its also a good idea to check that these are not stuck from corrosion monthly. It's cheep insurance in case a compressor contractor sticks in the on position to keep from over pressurizing the compressor tank I also like to go with a larger, diameter but same pressure rating pop off. I do this because I have a friend who was a victim of a compressor explosion,
Scott H.
Reviewed in the United States on January 11, 2016
Works as intended...
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