Square Bossed Elbowing Bracket, Green Float Valve and Constant Flow Heat Valve Assembly. This is termed as a “Watermaster Valve Assembly” by Ritchie. As you can see in the photo, it has the square bossed elbowing mounting bracket (#16422), then a 3/4″ nylon tee (#16508), installed in that tee is the PVC constant flow pitcock valve package with bushing (#18458), the latest version of this assembly will have the green valve (#15377) installed with the red inlet package also included in case you would prefer the 40-60 psi setup.