Bulkhead tank fittings are usually installed near the bottom of a container. There is a sealing washer included to keep the tank fitting sealed against the container wall. The inside threads are 3/4" NPT to allow many different types of fittings or valves or cam lock couplers to thread into the center of the tank fitting.
Bulkhead Or Tank Adapter- Also used in wine barrels
- 3/4"