K4000 CA40MM-010 K3500 (M2162) RCA45T2 (K4502) K2503 "GOYEN 3""" CA/RCA50T K0580 kit membrane and spring for K2503 "RCAC25FS4002 25FS4 1/8""NPT-PILOT S/WAVE-DIAPHRAGM" MODEL CA20 (M1182) RCA40 (K4000) K4504 TIMER BOARD SLAVE 10 STATION (MARTIAN) Obsolete RCA25DD110 replaced by RCAC25DD4122 RCAC25DD4122.