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Summary: Plastic waste compression joints used in plumbing in the kitchen and bathroom

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Tap into PlumbersPlastic compression wastes are not used a great deal by plumbers who prefer to use solvent weld waste systems. However the waste pipes used for push fit fittings and solvent weld fittings are two entirely different sizes and one of the easiest ways to join the two is by using compression fittings. The other really invaluable use for plastic compression plumbing fittings is when you are refurbishing and trying to join old pipes to new pipes including old lead wastes (which should be replaced if you get the chance) and odd sized imperial waste plumbing pipework. Compression fittings are big and bulky but they are very easy to use and can get you out of some tight spots sometimes. The image below shows the most often used plastic compression fittings and they can all be bought from our toolstore below. To pit a compression waste fitting could not be simpler. Push the pipe into the fitting until it hits the stop within the fitting and screw the compression cap as tight as you can. This action will force the rubber washer to close tightly round the pipe to produce a water tight joint. Compression fittings are made mostly to use with 32mm or 40mm pipe work.

PLastic compression fittings

From left to right the fittings are:

  • Compression waste conversion bend. This bend allows you to change direction and convert from 40mm pipework to 32mm pipework and vice-versa
  • Flexible waste straight coupling allowing you to join two pipes from 38mm to 45mm and absolutely ideal in a conversion or renovation situation. This fitting is also available to convert from 30mm to 38mm and can be bought as a flexible bend from 40mm to 48mm.
  • This is a compression waste reducer fitting which will take pipes sizes from 40mm to 32mm
  • Compression waste adjustable bend taking two pipes of the same size (32 or 40mm) round from a straight line up to 90 degrees. Again, invaluable in a conversion or renovation situation.
  • A compression straight coupling, joining two pipes of the same size in a straight line. 32mm and 40mm
  • A fitting which will allow to you connect a 32 or 40mm pipe round a wide bend to another sized pipe.

 





Much more construction information is available in our bookstore. All the tools and fittings you need in the toolstore.





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