ACETYLENE REGULATOR RV8011-1 MR82 SERIES HAVY DUTY - Forged brass body and bonnet - Easy-to-read single scale 2.1/2" gauges - 3.1/2" stainless steel diaphragm - Heavy duty mechanical stem type seat and nozzle assembly with removable back plug for ease of seat service - Delrin bushing for smooth flow adjustment - Fine mesh filter screen between inlet and seat - Pressure relief device for low pressure gauge protection only CGA / ACETYLENE INLET / 300 OUTLET / “B” (LH) CONNECTION / 9/16"-18(M) DEL. PSIG / 2-15 REPLACEMENT / G22; 30 PSI (RL) 2" GAUGES / G1S; 400 PSI IMENSIONS / Depth: 6 .1/ 2" / Width: 7" / Height: 6 .1/ 2" / Weight: 6 2lbs