Bulkheads are designed to link your outward water flow from your weir to the sump or link any internal fittings to external fittings on your tank such as for closed loop systems.

These are primarily sealed with a sealant to the back nut inside the weir and then using the washer supplied on the outside and underside of the tank but, it is your choice how you fit them on your specific system.

This bulkhead fitting allows you to insert 20mm pipe into either end or you can also use a 25mm straight connector and use 25mm pipe at one end and 20mm pipe at the other or even use the threaded connector and use a hose-tail at one end.

Thus this 20mm bulkhead fitting is very universal.

All our bulkhead fitting are PVCu and reef safe as are all our fittings and pipe.

All fitting are solvent weld joints.