Use the Swing check valve for tank systems to prevent backflow contamination.
These swing check valves don’t provide enough protection to be able to prevent backflow to mains water but they are perfect for tank systems that are linked with mains water.
Install a swing check valve on a tank/mains system to prevent mains water filling up your water tanks illegally.
We install these Swing Check Valves as opposed to Spring Check Valves on our tank installations because they have less tendency to block up.
If you are unsure of the size of the valve you need, please see this link: How to measure BSP threads and PVC Pipe
