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Asked by: Minia Serranos
home and garden home appliancesWhy does a washing machine need a standpipe?
The standpipe assembly keeps the water level of the washer tub below that of the drain, preventing siphoning from the drain or sewer line back into the washer. When backflow does occur, siphoning can cause water to flow back into the washing machine from the drain, or out of the drain onto the floor.
Accordingly, what is a standpipe for washing machine?
The proper way to drain a washing machine isn't to hook the hose over the edge of a utility sink, as many homeowners do, but to install a standpipe and secure it to the wall framing. A standpipe is a vertical length of 2-inch drain pipe connected to a P-trap which is in turn connected to a drain.
Similarly, it is asked, how should a washing machine waste pipe be fitted?
When fitting a standpipe for a washing machine the pipe must be higher than the washing machine drum to prevent syphoning. The hole which goes through the wall should be sloping downwards towards the outside of the property, so water drains away from the appliance.
To properly drain your washing machine, you'll need to have three components: Standpipe. Laundry standpipes must be tall enough to extend past the washing machine's overflow line—typically 30-36” in height, or 18”-30” above the trap. P-trap.