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turn down the pump speed on a combi john??? u should NEVER do that

Just bad practice pipefix :D You are allowed to do it.

if its rising so high mate, its deffo your EV, you do need a new one, and our company charges callout, plus the PRV and EV of course. so you shouldnt expect to pay any more that £200 man. It takes lterally an hour to change one if that.

If you have an unvented cylendar, then why get a combi????? unvented cylendars are **** hot at hot water flow rate. Just get a system boiler, it will still be pressurised, and you will have no airlocks. AND....... cheaper on gas :wink:

Corgi regs say that a bayonet fitting is adequate as a cap/seal, you dont have to get it capped but it would be better to do so, as, like said before, a child could push a pen in it, but i cant see them getting behind a cooker :p

Yeah sorry to be the bearer of the message but u gotta get transco or BG to move it :( You can move anything up to the ECV but no further, as long as u are corgi reg.

If the pressure is rising so high, then its your expansion vessel, it may need recharging, or failing that, fit an external expansion vessel. it should be charged to about 0.7 bar.