NIBCO | sku: 331339722 Nibco 2" Wrot Copper Press X Press Union Pch633 Nibco 2" Wrot Copper Press X Press Union PCH633. Operating Pressure 200 Psi Max, (125 Psi For Natural Gas Applications) Depending On The Application. Temperature range -40°F to 180°F. ASTM B75 Alloy C12200 Copper. IFGC International Fuel Gas Code. NFPA... Log in for pricing