Washing machine waste

21 Nov 2004
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United Kingdom
I am in the process of moving a washing machine to a new utility room on ground level. I will install a HepVo antisiphonic trap on the washer waste. The waste will feed directly into a gulley (not soil stack) which is on the opposite wall.

This means that I will need to run the waste (40mm) internally around 3 walls before it reaches the gulley.

I have no problem achieving the required vertical drop of 1.8-4.4mm/m. However, this configuration will give me a waste pipe approximately 5.5m long.

As I am using a HepVo trap (vented) and termination is in a surface gulley, will this work and conform to building regs?
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Run waste in 50mm, fit anti vac trap.
Kev advises you use solvent weld bends so you will need to buy some solvent which dissolves the surfaces of bends and waste pipe and welds them together
Job done :)
The Hep waste IS anti Vac, as well as non return.
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The problem with long runs is blockages, so make sure if you use solvent weld that you install some fittings to allow access. eg fit Tees with a removable blanking cap at one end instead of elbows at the 90 bends.

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