Watermill. Surrey Flange. 22mm Outlet, 1" F.I. Cylinder Boss

This Grundfos Surrey Flange Box is handy little device that allows you to prevent unwanted air from finding its way into your hot water pump. When inserted into your hot water tank, this highly functional flange means that the pump can draw water from lower down in the tank. As well as making the process so much more efficient, it also minimises so no more horrible clanking and banging when youre trying to run a nice hot bath! Versatile and diverse, the device can work alongside pumps from a wide range ...