Jump to content
John Lewis give 2 year guarantee on white goods appliances


Cross Connection - Syphoning

Recommended Posts

Thanks for reading my question. I am wondering, if a washing machine is draining into a laundry tub, and the water in the laundry tub fills past the washing machine drain hose (so that the hose is submerged in the water), what is the likelyhood that the washing machine will syphone the dirty water back into the macihne?

Thank you

Link to comment
Share on other sites

  • 2 weeks later...
  • Root Admin

Hello, It sounds an unusual way of running a washing machine. Without knowledge of exactly how it's set up I can't say, for example how much higher is the laundry tub and is there a hole in the laundry tub for the water to drain away or does it fill up - and if so how do you empty all the water away when it's finished?

In order to siphon into the washing machine the water would normally need to be higher than the level of the water in the tub or at least have a straight run down the drain hose. Sometimes water from a sink can siphon into a washing machine if there is a straight run from the sink connection down into the pump, but if the drain hose goes up before it goes down to the pump siphoning doesn't occur (as shown in item 2 on this page 5 things to check for after connecting a washing machine.

Need a repair or spare parts? 

Book a Repair | Buy appliance spares (Cheapest prices guaranteed)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Appliance Repairs

Book washing machine & appliance repairs

Click here to - Book Repair Now

Buy Your Spare Parts

Price match promise: "If you find the exact same part or accessory elsewhere for cheaper, we’ll not only match it, we’ll beat it!" -

Click here to - Buy spare parts now

  • Popular Contributors

    Nobody has received reputation this week.

  • Forum Statistics

    • Total Topics
    • Total Posts
  • Create New...