22mm York Flange to suit Cylinder outlet 1" BSP Male. Suited to pumps up to 3 bar pressure. The York flange is based on the 22mm Surrey although it has a 1" BSP female thread for use with male tappings on cylinders.
Considered to be an industry standard, the Surrey Flange is designed to provide an independent hot water supply from an "air free" position within the cylinder and will dramatically reduce air surging, noise and temperature variations.
With the inclusion of an air vent within the main body, the surrey flange automatically purges the shower circuit preventing an accumalation of air in the hot water shower feed (patent applied for). The vent automatically traps and releases air, preventing back feed of aerated hot water.
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