We carry a full-line of dry fire hydrant parts including threaded, storz, and camlock adapters. Sizes are 4 1/2", 5". and 6". Available in straight, 90 or 45 degree schedule 40 pvc pipe fittings male, female and storz. Caps are aluminum or polymer (plastic). Plugs are NH/NST threads. A dry hydrant is an unpressurized pipe that can be used to draft (or draw) water from a pond or lake.