Draining boiler through old prv

[Neil Carroll]

I've just bought a new prv as combi one is dripping quite badly , I've replaced a few in the past , no problem, is there any reason why I shouldn't use faulty prv to drain system first , If i open the loop and prv would it just run clean water in whilst dumping the old water out , only reason I can think for not doing this is that it would run a load of crap through the boiler . In theory I don't see why this wouldn't flush the system , as I say prv is dead anyway ...

thanks

 

[AGAS]

Just stop messing

 

[Madrab]

You want to avoid pushing any of the system solids through the boilers hex. Does it have a mag filter that could catch the debris?

No reason not to use the PRV to drain, if it's getting replaced though.

 

[gas112]

the water circulates through your boiler tens of thousands of times a day so emptying it through prv will not effect it in any way