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  1. T

    grohe shower

    hi, i have got a grohe shower which is run off my combi-boiler, the problem being when i am in the shower the boiler keeps knocking on & off. i have tried reducing the pressure on the cold feed going into the boiler & also reducing it, but still no joy, any ideas? cheers keith....
  2. T

    grohe shower

    hi, i have a grohe shower which runs off my combi-boiler, the problem being when i have a shower the boiler keeps knocking on & off. i have tried reducing the pressure on the inlet to the boiler & also increasing it, but still no joy. (the shower is 5 yrs old) any ideas? cheers KEITH....
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    drayton t.r.v,s

    ive bought a couple of drayton t.r.v,s to fit onto my rads just wanted to know if i could put them on the return as one of the valves is hard to get to?
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