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  1. C

    hot water cylinders

    Hi, I'm a apprentice and just to do some research I'd like a list of all of all the different types of hot water cylinder. Thanks chelseaplumber
  2. C

    valves

    apart from visual difference what is the diffrences between a stop cock and a gate valve? thanks
  3. C

    drainage

    If i have 5 houses in a row ,whats the minimum amount of vent/stacks i would need?? thanks
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