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    Question regarding pipework size to an expansion vessel

    HI folks, Does anyone know if there are any rules regarding what size pipework should be used to pipe up an expansion vessel that's working with an unvented cylinder. I saw one yesterday that was installed with 15mm pipe to the combination valve, and I wasn't sure if this was acceptable or...
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    Advice needed: Worcester 30si - no hot water

    Hi, I'd be really grateful if I could get some of your opinions on an intermittent fault that occurring on a customers boiler. (Greenstar 30si mk 3). I have spoken to Worcester about this, but seems like everyone's scratching their heads with it a bit, and I'm not really a fan of just guessing...
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    Can I replace O ring on Grundfos UPS2 15-50?

    Hi, Could anyone tell me, if one is able to obtain a replacement o ring to go between the pump head and the body? I've done a small amount of hunting online but no luck in finding a part no.... (I ask this because occasionally when in the process to diagnosing a blocked pump Id like to...
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