Pressure Relief Device (PRD)
Pressure Relief Device - 82800450
Includes 1 x PRD & burst disc. (fitting instructions included)
Please note that this part fully retrofits the previous part pictured below.

A Pressure Relief Device (PRD) is a safety feature installed in Electric Showers. If heated water fails to escape through the shower head (due to a blockage such as a kinked hose or blocked shower head), the PRD will blow, thereby allowing the water to escape through an outlet pipe before it causes damage to the heating tank. A PRD cannot be reset once it bursts and must be replaced.
How to fit
See how to change a PRD in our short video in the gallery. An instruction leaflet is also supplied with the part.
VIDEO: How to change a Pressure Relief Device (PRD)
Pressure Relief Devices Explained
Our knowledge base explains everything you need to know if water starts to leak out of the bottom of your electric shower. Click 'find out more' below to have your questions answered, such as;
- Why is water leaking from my electric shower?
- What is a pressure relief device (PRD)?
- What to check before replacing a PRD?
- How to fix a leaking shower?
