This Taprite primary soda high pressure regulator allows you to control pressure as you carbonate you beer or other beverage.Specifications: To protect dispensing systems each regulator has a built-in high volume external safety relief valve factory set to relieve at 126-134 PSIG. Internal relief valve opens if the delivery pressure exceeds set pressure by 15 PSIG. This serves as a warning that the seat or diaphragm may be worn and require replacing. CGA320 Inlet (Left hand thread) Forged brass body for greater durability. Body has enough mass to serve as a heat sink to help prevent freeze up. Body parts are 1/4" NPT Outlet fittings feature a 1/4" barb shutoff for 1/4" ID tubing (Right hand thread) Working pressure range is 0-120psi. Front loading seat assembly is easily replaceable in the field. 60lb (Right hand thread) and 2000lb (Left hand thread) Gauges Taprite Documentation: SPECIFICATIONS