Whale Expanse PRV Replacement

A short video to show how I replaced the pressure relief valve on my Whale Expanse water heater. The part costs about £60 at the time of filming. All you need is something comfortable to lie on, a Philips screw driver and the replacement PRV. It is possible to dismantle the valve, the o ring inside will be out of shape and if you could fit an new identical one it might keep working.