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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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  1.  
    I'm trying to maintain the flow and pressure of our water supply so that we don't need to get a tank and pump for our sprinkler system. However, all the MDPE fittings require an insert that narrows the bite considerably. Does anybody have an alternative suggestion to overcome it?
    • CommentAuthorMike1
    • CommentTimeAug 14th 2017
     
    Melimatic Push-Loc fittings - no insert required.
  2.  
    Thanks Mike! They don't seem to make 32mm fittings. 25mm seems the largest.

    The sprinkler company have suggested the following syopcock: Plasson Valve Model 23601
    UK Code 236010032. However, I'm not sure how it connects.
    • CommentAuthorborpin
    • CommentTimeAug 14th 2017
     
    I was recommended Philmac fittings years ago but I have no idea if they need an insert.
    • CommentAuthorMike1
    • CommentTimeAug 14th 2017
     
    You should be able to get electrofusion (heat welding) fittings for 32mm, but it would be expensive to hire the kit (or a person) to make the joint. Though not as expensive as a tank and pump.
  3.  
    Plasson have told me it's possible to do it with the following fittings - looks like I have to go up a size:

    Mains Stop Valve PA 1 1/4"
    Male Adaptor - 40 x 1 1/4"
    Female Adaptor - 32 x 1 1/4"
    Copper Adaptor 40 x 35mm
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