The Grundfos Watermill Single 1" Surrey Outlet Flange is considered an industry standard, and has dominated the market for more than 10 years. The Grundfos Watermill Surrey Flange is especially designed to provide an independent hot water supply, thus noticeably reducing air surging, noise and temperature variations.

The Grundfos Watermill Single 1" Surrey Outlet Flange is especially designed to suit Grunfos Watermill cylinder outlets of 1" BSP female. The 15mm outlet flange is suited to pumps up to 1.5 bar pressure, and the 22mm outlet flange is suited to pumps up to 3.0 bar pressure.

Thanks to a built in air vent, the Grundfos Watermill Single 1" Surrey Outlet Flange automatically purges the shower circuit, helping prevent air accumulation in the hot water feed. Trapped air is then released from the hot water tank ensuring you a splutter-free showering experience.