RP50 - Replaceable check valve kit for CB25's and CB50's. Unique basket design imparts much quieter operation in noise sensitive areas. All brass construction with copper adaptors for 3/8" & 1/2" tubing.

CRP1520 - Replaceable check valve kit for CB15's and CB20's. A modern duck-bill design with barbs for 3/8" I.D. tubing and 1/4" MNPT threads.

CRP1520A - Replaceable check valve kit for newer models (with dual float) CB15’s and CB20’s. Also a duck-bill design with barbs for 3/8” I.D. tubing and 1/4” MNPT threads.