DI4101: 1/4" compression - brass inlet, arm and stem. Polypropylene body and float. Noiseless and noncorrosive
DI4153: 1/4" compression - brass body casting, arm and stem. Stainless steel seat. Polypropylene float. Plunger rotates to discourage alkali deposits
DI4159/DI4161: 1/4" compression - heavy duty bronze body, brass plunger, arm and stem. Polypropylene float. 2 piece arm with adjustable screw. Bronze is resistant to corrosion
DI4164: 3/8" compression - heavy duty bronze body, brass plunger, arm and stem. Polypropylene float. 2 piece arm with adjustable screw
DI4178: 3/8" MPT and 1/8" FPT - heavy duty bronze body, brass plunger and 2 piece arm for residential and industrial coolers, fountain and stock tanks.