RUH82 SERIES MEDIUAM / HAVY DUTY - Machined brass body - Polished chrome bonnet - Easy-to-read single scale 2" gauges - 2" tri-layered reinforced neoprene diaphragm - Heavy duty mechanical stem type seat and nozzle assembly - Delrin bushing for smooth flow adjustment - Porous metal inlet filter (except C02 models) - Fine mesh filter screen between inlet and seat - Pressure relief device for low pressure gauge protection only CGA / OXYGEN INLET / 510 OUTLET / “B” (RH) CONNECTION / 9/16"-18(M) DEL. PSIG / 2-15 REPLACEMENT / G2S; 30 PSI (RL) 2" GAUGES / G1S; 400 PSI IMENSIONS / Depth: 51/ 2" / Width: 7" / Height: 51/ 2" / Weight: 3 lbs