![]() Step two:Once you’ve found where your standpipe should sit, secure to the wall using pipe clips. Step one: Find out the appropriate height the standpipe should be from the floor via the appliance instructions and position the standpipe adjacent to the appliance itself. It’s important that during this installation the sink outlet should not be plugged and make sure there are no obstructions while the appliance operates. Here are some steps to help you complete a washing standpipe with a trap. Check with the machine manufacturer if a standpipe is a requirement or a suggested piece for a more suitable fitting. This will stop dirty water from draining back into the washing machine. At the top of the standpipes should be an air gap. An alternative is attaching the pipe directly into a soil stack. This can then be attached to a hopper head or gully. Then, once attached to the P-trap, run the pipe through the outside wall. The first solution is hooking the washing machine hose into the top of a standpipe with a P-trap at the bottom. Do also confirm absah requirements via Approved Document H before you perform this type of DIY. Whichever method you choose, you will need to make sure that the water flow is turned off during this time to avoid release of wastewater into the property. WASHING MACHINE DRAIN PROFESSIONALIf you want to replace a trap, you can find out how via our “How to change a plumbing trap” guide.Īlthough contacting a professional is advised, there are a few options when it comes to connecting a washing machine trap if you have the necessary DIY skills. Read: A Relatively Flat Demand Curve Indicates That Confirm with a professional if unsure prior to fitting your new trap. Having said this, should the appliances discharge directly into the gully, you can reduce the depth of seal to no less than 38mm if desired. The garis tengah of the trap should be at least 40mm and the depth of seal should be at least 75mm of water or equivalent. The document also states that there is a minimum trap size and seal depth. It also outlines that under working or test conditions, traps should retain a minimum seal of 25mm of water or equivalent. Does a washing machine need a trap?Īpproved Document H mentions all points of discharge into your soil and waste system should be fitted with a trap to prevent foul air from the system entering the building. More information about washing machine lint traps can be further down the guide. This type of trap should also not be confused with a washing machine lint trap, but the lint trap still serves a purpose. Find out more about wastewater discharging and legal requirements here. It’s worth noting that it is illegal to put wastewater into your surface water system (the surface location is where water is collected by your gutters) unless you have an environmental permit. The same system that is connected to the toilet, urinal and bidet. This system will typically be connected to the soil vent pipe system. They can be installed in new or existing applications, which means an easy connection to the waste system when needed. The standing water prevents sewer gases and foul odours from entering the room from the drainage system, whilst still allowing waste to pass through. These are designed to hold a small amount of standing water within a curved pipe section. Washing machine traps are a type of plumbing trap.
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