EM40640

Check Valve Male Port (1) 1/2in P.T. Female Port (1) 1/2in P.T. Part number: EM40640 OE MFG: MACK OEM Reference: 745-227871 Cross Reference: OTHER : 0872, 745-227871 Product Class: Air Valves & Kits The PAI EM40640 is a check valve male port with one 1/2-inch P.T. male port and one 1/2-inch P.T. female port. Check valves are heavy duty diesel truck parts that permit air or fluid flow in one direction while restricting reverse flow, maintaining intended pressure paths within a system. MACK lists 745-227871 as the OEM reference, with 0872 as an additional cross-reference.