PUM is short for Purus Universal Membrane, a product range which sets its own standard. The PUM works as a mechanical odour trap, using a silicone membrane instead of a traditional water trap. The membrane opens only by the flow of water, and closes when the flow stops. High quality materials guarantees trouble-free use for many years. Made of two-component silicone, the membrane is resistant to both strong chemicals and high temperatures.

No more dried-out water traps, unwanted odours or overflowing water with minimal maintenance.

We think the choice is obvious!

+ Space-saving

PUM washbasin siphons not only effectively block unpleasant odors from the sewage system thanks to the one-way flow. It remains closed when there is no water flow, preventing unwanted odours which otherwise occurs after a long time period of no use.

+ Odour-free, even dried-up

Thanks to the membrane, the PUM doesn't need a water trap to block bad odors. The silicone membrane closes when the flow stops, and no water trap is needed or takes up space in the bathroom cabinet.

+ Easy to clean

The silicone membrane prevents clogged pipes and requires minimal maintenance. PUM integrated in bottom valve gives easy cleaning. You get quick access without having to disassemble any drain parts. Simply lift to rinse under the tap.

+ Functions as a back pressure valve

PUM washbasin water traps works as an air admittance valve, effectevly compensating for the negative pressure in the sewage system, for example when emptying a bathtub.