RUH82 SERIES MEDIUAM / HAVY DUTY - Machined brass body & bonnet - Easy-to-read single scale 2" gauges - 1.5/8" tri-layered reinforced neoprene diaphragm - Mechanical stem type seat - T-handle for smooth flow adjustment - Porous metal inlet filter - Fine mesh filter screen between inlet and seat - Pressure relief device for low pressure gauge protection only CGA / OXYGEN INLET / 540 OUTLET / “B” (RH) CONNECTION / 9/16"-18(M) DEL. PSIG / 5-80 REPLACEMENT / G4S; 220 PSI 2" GAUGES / G7S; 400 PSI IMENSIONS / Depth: 4.1/ 2" / Width: 7" / Height: 5.1/ 2" / Weight: 2.1/2 lbs