Bulkheads are used to attach plumbing to aquariums and sumps to create a leak free way to move water.
Bulkheads come in different sizes and different ways to connect plumbing. you can choose from:
Slip x Slip - both the inside and outside of the bulkhead will require a solvent to permanently bond the plumbing to the pipe.
Thread x Thread - both the inside and outside will use a male NPT threaded fitting
Slip x Thread - The part of the bulkhead on the inside of the tank uses a slip fitting (requires solvent) and the outside requires a male NPT fitting
Thread x Slip - The part of the bulkhead on the inside of the tank uses a threaded fitting (for make NPT fittings) and the outside of the tank is a slip fitting (requires solvent)
Our 2" bulkhead uses our 75MM Diamond bit