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Best way to install a device (propress) in an immobile pipe?

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sunlight33
sunlight33 Member Posts: 378
edited April 2021 in THE MAIN WALL
To install a device (like a dirtmag) with press connection on a 1'' straight pipe and the pipe happens to be immobile after cutting, is inserting a short piece of pipe into each end of the press then use no-stop coupling the only way?

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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,829
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    If you absolutely can.t spread the pipe apart then yes. Either slip couplings or unions around the filter are better but cost $$
    kcoppIntplm.
  • hot_rod
    hot_rod Member Posts: 22,468
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    The Caleffi NA 5453 has press union connections, very simple to add in .
    NA 545366 press, 545356 with iso valves.. It can be used on a vertical or horizontal line also.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    mattmia2
  • mattmia2
    mattmia2 Member Posts: 9,942
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    Not many situations where you can't undo a pump flange or some hangers or both to get the 3/4" or so to slip the fittings together.
  • sunlight33
    sunlight33 Member Posts: 378
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    For my case it's either between the DHW tank and an elbow against the wall, or inlet of a LLH and an elbow against the wall. I can probably cut the elbow and rebuild from there but prefer something simpler.

    I notice for the Viega union fitting, the part where the two are mated, one goes inside of another by about 1/8'', so should I screw down everything and use that as a guide to cut the pipe? (or leave 1/8'' of wiggle room?)
  • hot_rod
    hot_rod Member Posts: 22,468
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    here is an example
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    sunlight33
  • pecmsg
    pecmsg Member Posts: 4,949
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    Slip Coupling 
    or
    2