These valves have been designed, constructed and rated in accordance with ANSI/ASHRAE 15 Standard Safety Code for MechanicalRefrigeration and the Canadian Standards Association. Each valve is stamped U.V./N.B. to indicate national board certifications as tocapacities. These A Series pressure relief valves are all Teflon seated, permitting their use in applications of either high or low temperatures.
Brass body, Teflon seat
Minimum temperature: -40°F
Stainless steel spring
Maximum temperature: 325°F
A pressure relief valve is installed in a refrigeration system primarily to protect the receiver. Since it is not intended to be an overload or high pressure cutout, we recommend that the pressure relief valve be set at the working pressure marked on the receiver.