Waterway Poly Jet Internal [4 3 16" FD] [Roto] [5 Point Scallop] [White] (210 6550) fittingsother A valve like this is A valve like this is useful because it provides dependable shutoff while allowing the plumbing layout to transition cleanly between threaded and solvent welded connections A ram bit tool helps remove broken pipe remnants from inside compatible fittings so the fitting can often remain in service The Waterway 210 6550 Poly Jet internal is designed for compatible jet assemblies and features a 4 3 16 inch face diameter with roto action A part like this is useful because it pairs a larger trim format with a more active user facing jet pattern