Central vacuum system inlet fittings are intentionally created having a tighter radius of curvature than People of other bends during the program. If vacuumed debris becomes stuck it can jam within the inlet, the place it is not hard to search out and remove. Closet flange[edit] Slip-joint fittings are usually http://valves-and-fittings89900.bloggerswise.com/51938/valves-and-fittings-an-overview