[Tim]

Mine is a combination of bronze fittings, brass pipe, steel pipe and steel fittings. The joints are sealed with a high temp sealant from Permatex. The brass and bronze I got from WM, the black steel pipes from Home Depot. The tee, elbows and pipes are 1.25 inches. The rubber exhaust hose is connected with a bronze fitting that is 1.5 inch hose barb x 1.25 npt threads. The water inlet hose is connected with a bronze 1.25 x .5 inch reducing bushing and a bronze .5 inch npt x .5 inch hose barb.