The inside walls of these bulkheads are smooth, not threaded, allowing you to glue PVC pipe or flex pipe directly into fitting. Eliminates need for male adapter.
Thick rubber gasket ensures watertight seal
Heavy Duty Threaded Pond Bulkhead Fittings
Inside threads are female pipe thread, use male adapter to connect PVC flex pipe
Locking nut is a left hand thread (counter clockwise to tighten)
Thick EPDM gasket between head and tank/liner ensures leak free installations
See chart below for hole size needed in tank wall for installation
