When would I need a no stop Essex flange?

A side entry flange, such as a no stop Essex flange, is required in two circumstances:

• The pump is installed above the hot water cylinder, alongside an anti-gravity loop of 400mm.
• Where there is less than 1m between the top of the hot water cylinder and base of the cold water tank.

Outside of these circumstances a top entry flange can be used.

Watch the video guide of step-by-step installation of a 22mm no stop Essex flange on a hot water cylinder.