Heat Pump Bypass Kit for Below Ground Pools Our heat pump bypass kit for below ground pools allows you to control the flow of water through your swimming pool heat pump to maximise the heating of your pool water, the bypass kit also allows you to easily winterise or maintain your heat pump without having to affect the flow of water to your swimming pool. The bypass kit consists of 3 x ball valves, 2 x 90° tees and 1 metre of pipework, in 1½ inch or 2 inch, to be assembled to suit your pipe layout. Please note if you are measuring your existing pipe the outside diameter for 1½ inch pipe is 48.26mm and the outside diameter for 2 inch pipe is 60.33mm. Product information Ball Valves Handle material PVC-U Seal material PE/EPDM Operation lever Colour lever red Colour white Material PVC-U Connection imperial glue socket Pressure 10 bar Pressure Pipe Colour white Material PVC-U Connection plain BS 3505 Class D-PN12 90° T-Pieces Colour white Material PVC-U Connection imperial glue socket Pressure 16 bar