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. PT30 RCA3 12x 5x CA45DD101-301 CA20T020 Sealing set for CA20T020 12BSS3/2-7027 CA76T020-300 RCAC25FH3X/3560