Designed to allow safe, quick pipe connections to plastic or metal tanks, the bulkhead fittings come standard with heavy duty, full buttress left hand threads to prevent leaks under pressure. The fittings are molded 1" longer than previous versions for use with thicker or double wall tanks and with a heavy wall thickness to withstand most abuse, rated to 150 PSI, have EPDM or FPM gasket seals, and feature a hex body for one person installation. BFA Bulkhead Fittings are available in PVC, Corzan® CPVC, and PPL with standard flanges in 1/2 - 6" sizes and large flanges in 1/2 - 1" sizes.