Flush Kit for Groco strainer ARG-1000 , ARG-1250 2 1/2 inch cap.

Marine Raw Water Strainer Flush Cap, Compatible with Groco ARG 1000 & ARG 1250, Replacement Cap It can serve as a permanent replacement cap  by upgrading the plastic valve to a marine-grade one. The cap features a ¾-inch GHT (garden hose thread) for easy replacement.