Palaplast
Roll of 20mm black polytube (LDPE)
In stock
£52.80
Unit price per20mm black polytube, available in 50m or 100m rolls
Non-porous 20mm pipe to deliver water from its source to the areas you want to water.
50m or 100m roll of a larger diameter black, non-porous, semi rigid plastic pipe, suitable as a permanent feeder pipe for your irrigation system. This pipe is easily cut with a sharp pair of cutters and is compatible with our range of '20' barbed fittings. The fittings can be gently wiggled into the polytube and will grip on the internal surface without the need for additional clips. In very cold weather, if it is difficult to insert fittings, try dipping the end into a thermos flask of hot water for about 10 seconds and this will soften the pipe slightly. As the pipe cools, it will shrink onto the barbed fittings. Fittings can be rotated in the polytube without breaking the seal.
This LDPE (Low Density PolyEthylene) pipe is 20mm external diameter.
When and why should 20mm be used as opposed to garden hosepipe or 16mm polytube?
You could use 16mm polytube supply pipe rather than hosepipe as your 'water distribution main', as it is a little more efficient at carrying water without pressure drop than garden hose.
20mm supply pipe polytube is more efficient again, because its bigger, the water travels slower and the pressure drop is lower. This means you can carry the water further for the same pressure drop. As a guide, if you intend to water 400m or more of LeakyPipe, choose 20mm supply pipe to transport the water. 16mm supply pipe is suitable for running up to 250-300m of LeakyPipe.
LDPE is 'low density polyethylene' and accepts barbed fittings which grip on the inside of the pipe without the need for clips.
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