Sunday 22 November 2020

Electric shower , checking and replacing PRD pressure relief valve device / outlet

Easy job to do but here is a step buy step guide , you will know if this is gone as the shower will be leaking lots of water into you bath or shower cubicle when you turn it on. when you replace make sure you check to see what caused it to operate it could be blocked shower head or a kinked pipe or a blockage in heater unit itself.


Other reasons could be incorrect or aftermarket shower hose head fitted , too high water pressure or incorrect use of the shower head ie submerging in water or kinking of the pipe.


Buy electric shower parts on Ebay UK here


Need a Multimeter for testing try on Ebay UK here





Electric shower , checking and replacing PRD pressure relief valve device / outlet

Remove the cover from the shower unit first 

Electric shower , checking and replacing PRD pressure relief valve device / outlet

and now you can see the outlet pipe attached to the heater element 
and water tank 

Electric shower , checking and replacing PRD pressure relief valve device / outlet

you are looking for something that looks similar to below 
a little outlet attached to the main outlet 

Electric shower , checking and replacing PRD pressure relief valve device / outlet

size PH1 PRD retaining screws

Electric shower , checking and replacing PRD pressure relief valve device / outlet

here is is removed you can buy these very cheap 


Electric shower , checking and replacing PRD pressure relief valve device / outlet

the seal at the hole of this outlet pipe is set to burst at a certain pressure to prevent 
water overheating in the main heater element tank 
so replace it if it is burst 

Electric shower , checking and replacing PRD pressure relief valve device / outlet

Below i am taking off the heater outlet pipe make sure you replace o-ring seal if needed 

Electric shower , checking and replacing PRD pressure relief valve device / outlet

ive replace the outlet pipe and now i am doing up the retaining screws size PH2

Electric shower , checking and replacing PRD pressure relief valve device / outlet



                                          here is a video below of me doing this 











Buy these PRD from Ebay UK here 








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