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Question:

What causes my hand wash basin to gurgle when it is draining?

What causes my hand wash basin to gurgle when it is draining?

Answer:

there is a lack of air in the drainage system. they sell a check valve you can install on the drain to allow air to enter the system.
Apr 14, 2017
Usually when that happens it is from improper or clogged vents. You have to have a vent to allow air into the drain in order for it to drain properly. Look on top of your house, there should be a plastic pipe coming out of the roof. There are a few ways to unclog a vent. The best way is to run a snake down it. That's about all I know about plumbing.
Apr 14, 2017
Sounds like a vent is plugged or you may not be venting well in your plumbing
Apr 14, 2017
Its not vented right . If its a real old house its most likely cast iron / steel drainage lines are starting to clog . Check the roof vent first but it could be the horizontal pipe . A plumbing system is designed to be half waste and half air to replace the water rushing by . To explain it easiest its like opening a HI C metal can with just one hole and pouring a drink out it gurgles . If you pop a hole in the other side it flows great. It could also be that your dumping your washing machine into the basin . The plumbing code has changed over the years and long time ago 11/2& line was required . With the new washing machine the output is alot more volume and now for the past 20 years plumbing codes require a 2 & line . It also depend on how your system is laid out is there a kitchen sink draining @ the same time ? Anyway something is starving your plumbing system from getting air . If I had more history as far as kind of drainage , age of house ect , plumbing lay out , I could tell you more ... Good Luck
Apr 14, 2017
Thats what p traps are for under the sink, check yours or install one they keep sounds out and odores, good luck
Apr 14, 2017

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