Power Flushing

[MickBrown]

I am trying to do a power flush at a friends house. The bottom union on the pump is impossible to access, can I remove the 3 way valve and connect there after disconnecting the power to the pump? There is nowhere convenient to connect in to the pipework elsewhere. I know you can use pump head adapters but I don't have one and I have the power flush machine on hire but only until Monday. I have found one online that says next day delivery so could get that in time if one of you guys say that would be a better option. I know some people remove a radiator so could do that. I have done power flushes before but not many and always managed to disconnect the pump.

 

[PhoenixServices]

Get the pump head adapter. Haven't had great results flushing from rads before.

 

[newcastle phill]

What type of system is it.
If its open vented dont forget about tank etc

 

[gassafe]

Undo the nut & fit a new new pump valves... Otherwise heat it up with a blowlamp or cut the union nut off!!

 

[lame plumber]

hacksaw into the 22m flow and use 2 x speedfits, its that easy

 

[gassafe]

hacksaw into the 22m flow and use 2 x speedfits, its that easy

Pfft, use a pipe slice at least... 🙂

 

[AlexGas]

...Haven't had great results flushing from rads before.

Why not!?

 

[tomplumb83]

I paid out for a pump adaptor 10 year ago but never used it once Big mistake.
I always connect to rads

 

[Masood]

I paid out for a pump adaptor 10 year ago but never used it once Big mistake.
I always connect to rads

What do you do on combis? Do you remove the plate hex and do it separately?

 

[tomplumb83]

No I always connect to rads. Never removed the hex

Not being gsr, I wouldnt dare remove the boiler cover.....

 

[newcastle phill]

^ so much easier

 

[PhoenixServices]

Flushing from a 15mm pipe isn't going to clean the system properly I have found. Had to redo a few where colleagues have done them from rads.

 

[newcastle phill]

Well I have to disagree with that re 15mm pipe.

It doesnt matter at what point you flush from. At some point the prevailing pump pressure / flow is going to go down many 15mm pipes

 

[thorn]

What's the thinking behind a powerflush not working off 15 mm? I've never had a problem with it before, usually do it off a rad anyway

 

[MickBrown]

Thanks for all the replies. The reason I could not get the unions off was because I couldn't physically get to the bottom one enough to put any sort of leverage on it. I think the pump was fitted and then other pipework added around it with no thought as to how the pump could be removed in the future. I bought a pump adapter and I will have a go with it today.