Model “VR25”, “VR38”, “VR75” & “VR10”
Model “VR” vacuum relief valves are used in systems to maintain a desired vacuum level. These valves are proportional relief valves (not “pop” type safety valves). Not preset at the factory, easy field adjustments with knurled adjustment screw and locked with jam nut.
Construction: All brass with stainless steel springs. VR25 uses stainless steel ball as poppet; VR38 & VR75 use nylon poppets with Nitrile seals; VR10 uses brass poppet with fluorocarbon seal
Max Temperature: 250ºF