In our last house the washing machine drained into its own standpipe. In the current house (rented, so no chance of changing things) there is a side-tube just above the bottom of the 'u'-bend under the kitchen sink drain.
The waste pipe hooks up to it just fine, but I'm a little concerned about water feeding back into the washing machine (potentially full of clean washing) if, for example, we were to pour a lot of dirty water down the sink.
Because of space-constraints in the cupboard under the sink, there\\\'s no way I can get the highest point of the waste pipe any higher than the underside of the sink.
Is there some kind of non-return valve which can be fitted in-line with the waste pipe to ensure that water only flows out of the washing machine? I've seen "anti-syphon" devices, but I'm not sure that's exactly what I need.
The waste pipe hooks up to it just fine, but I'm a little concerned about water feeding back into the washing machine (potentially full of clean washing) if, for example, we were to pour a lot of dirty water down the sink.
Because of space-constraints in the cupboard under the sink, there\\\'s no way I can get the highest point of the waste pipe any higher than the underside of the sink.
Is there some kind of non-return valve which can be fitted in-line with the waste pipe to ensure that water only flows out of the washing machine? I've seen "anti-syphon" devices, but I'm not sure that's exactly what I need.