filling loop valve leaks

kozak

Hello

Filling loop valve leaks and needs replacement.

Usually I've used this valve to increase pressure to 1 bar. Now when I try to use valve it leaks - pressure rises but then drops to zero in a minute.

Boiler (gas, in apartment) does not switch on because Pressure dropped to zero due to leak in the valve. Pressure must be at least 0.7 bar to allow boiler switch on.

What is a procedure for valve replacement? Any point replacing not only valve but whole Filling loop?

Any idea what is the reasonable price for this job done by plumber?

Thanks

Billy Bunting

It's usually just a simple non-return valve, possibly with gauge. Replacing just the valve could be a problem if the hose doesnt fit, I.M.O fit the whole loop, about €15/20 and with the mains water turned off can be a simple DIY job.

kozak

Thanks for your reply.

where do I get filling loop with valve? Is it shops like Woodies?

my understanding water tank must be drained before replacing. Is it right?
Do you know DIY website to get details?

Billy Bunting

Think i've seen them in woodies.

No, no need to drain hot water cylinder or tanks. If you have no pressure you'll have little or no water to worry about, just have the new non return valve ready to switch over when you slacken off the old one, if you still have some pressure/water just drain it off into a bowl from at the non return when you slacken it off.

Joey the lips

As said its not the valve but the non return valve. The problem is you might loose some water from the system when changing it so it will need a top up

Make sure your ball valve is closed when changing it.

sullzz

[QUOTE=kozak;70913530



Usually I've used this valve to increase pressure to 1 bar.



[/QUOTE]


If you have had to repressurise system often in the past you might want to get a plumber to check your heating system for leaks. Introducing fresh water to your heating system will corrode it in a short amount of time