Comparison : Item # ZC-31-0-10/32-BR-BN, Check Valves; Threaded insert, Threaded insert with nose seal
Item # ZC-31-0-10/32-BR-SS, Check Valves; Threaded insert, Threaded insert with nose seal
Item # ZC-31-0-10/32-SS-BN, Check Valves; Threaded insert, Threaded insert with nose seal
Item # ZC-31-0-10/32-SS-SS, Check Valves; Threaded insert, Threaded insert with nose seal
Item # ZMC-20-0-M3.5-BR-SS, Check Valves; Threaded insert, Threaded insert with nose seal