Prv on flow or return does it matter?

[gassed up]

Just wondered if anybody has an opinion as to why some manufacturers ask for the prv on a sealed system to be installed on the flow pipework rather than the return?

 

[ShaunCorbs]

Always put on the return same with expansion vessel as if you have a big pump could set it off / wear the diaphragm early depending on distance

 

[gassed up]

Cheers for the reply mate but any idea why boiler manufacturers would specify it to be on the flow

 

[king of pipes]

Maybe they are stating its fitted before any controls On the system , as shaun says can go on the return always a open circuit back to the boiler cheers kop

 

[ed209]

Be interesting to see what manufactures said if there was a warranty issue and PRV was on return and they stated flow!