Uniweld RMC Patriot series acetylene regulator has an "A" outlet connection and a 200 CGA (Compressed Gas Association) inlet. The Patriot series regulators feature protective rubber gauge boots, rear inlet service and specially compounded diaphragm and seat material that provide accuracy and reliability. The regulator provides a delivery pressure of 2-15 psi. It comes with a 400 psi contents gauge that shows full, 3/4, 1/2 and 1/4. Replacement contents gauge is Part # G19D.