Changing 3 Port Valve On Bungs

[plumbandplumber]

Thanks for your replies. It's an ancient system that's been added to over the years and has been a real problem with airlocks in the past. I would like to bung if I can.

With bunging the F&E outlet and the splines, would a carrier bag over the bung work?

Any other tips appreciated. Thanks to all.

 

[Millsy 82]

I find it doesnt take that long to drain and swap a valve on most systems. As soon as I hear it gurgle past the pump etc then whip valve out change nuts put new in wallop inhibitor in the f and e although not much water would of been drained turn water back on, by now my cup of tea will be the right temperature so slurp my tea whilst bleeding the pump and thumb vents in airing cupboard turn on and test. usually 40mins to an hour.

 

[Millsy 82]

Thanks for your replies. It's an ancient system that's been added to over the years and has been a real problem with airlocks in the past. I would like to bung if I can.

With bunging the F&E outlet and the splines, would a carrier bag over the bung work?

Any other tips appreciated. Thanks to all.

I look at the cold feed and vent before I give my price as alot of the time it is that that gives the most problems with airlocks.

 

[happyflyer]

Bungs my bum, a 3 post valve is a pig to change normally, where did this bung bit ever come from, what the hell is wrong with draining down, air will get in somewhere and let water out its not for the DIYER.

If you get air locks when you fill up there is something wrong in the pipe levels, get it fixed once and for all, usually in the roof on the CF from the tank out of level, poor plumbing, don't run away from problems, like "this system always air locks when you fill it it" like a bad doctor

 

[happyflyer]

I look at the cold feed and vent before I give my price as alot of the time it is that that gives the most problems with airlocks.

100 out of 10

 

[lame plumber]

just change the motor head if the valve moves ok, ok 9/10 times

 

[MC_Bob]

No. Change both. Its a ripoff changing the motor and not the body. People dont realise its the body not moving all the way around which stops the motors hitting the microswitch.
Fit a new head and wiggle the body, sure its going to work until you collect the money..