Replacement Sight Glass Arg500 And Arg755 | Groco Arg-503Replacement Sight Glass Arg500 And Arg755 Groco Arg 503 Groco ARG500 and ARG755 Replacement Sight Glass ARG 503 Groco sight glass Fits Groco 1 2 in. NPT ARG 500 and 3 4 in. NPT ARG 755 bronze raw water strainer heads One piece molded sight glass Includes drain plug and drain plug o ring Cleans easily using only mild soapy water Strainer head to sight glass o ring P N 2 153 sold separately Service Kit P N ARG 1 sold separately