Baxi PRV Cartridge replacement

[Cannylad]

Not sure how to remove the existing cartridge - the new cartridge is part threaded any advice much appreciated

 

[Deleted member 267285]

Where did you obtain this “spare” cartridge? I would have just replaced the whole PRV - it’s a safety device.

 

[Cannylad]

Baxi service engineer who carried out annual service on my Megaflo cylinder identified the problem and the part number - ordered the cartridge from city plumbing supplies

 

[Deleted member 267285]

If it’s available as a spare then and it’s correct then unscrew the existing one and replace with that one, simples

 

[oilhead]

And if that is the case, make sure you dress the valve seat to avoid a bad seal. i've never seen such a spare.

 

[Cannylad]

On the face if it - turn off the isolating valve and twist the cartridge anticlockwise to remove.... ?
I only query because the engineer mentioned using spanner (tool) in the process yet I can see no need!

 

[oilhead]

So how would you twist the cartridge anti-clockwise without a spanner or grips? I doubt if turning the knob would achieve the desired effect.