Polypropylene bulkhead fittings are for use with plastic cistern tanks, to add a threaded fitting. The bulkhead fitting is a 3 part unit. The main body of the bulkhead fitting is threaded with the pipe size female thread, and the outside of the unit is threaded with a left hand thread, to receive the gasket and nut that tighten the bulkhead fitting into the tank. 

External Thread and nut are left hand threads. Internal Thread is FPT. For use with tanks having a wall thickness of 1/16” to 1/2”.
• Material:
• Body and Nut are Polypropylene (P).
• Friction washer is Polyethylene.
• Sealing washer is EPDM.
• Nylon, Buna and Polyethylene used in manufacturing are FDA approved grade.