A plumber shows how to solve a gurgling noise from a sink drain 

😂😂😂I was like is that really a plumber because that does not look professional.

You can pull the hole thing out of the rubber sleeve in the wall.

Bottom of the trap is threaded for easy cleanout.

Управо тако! У чему је разлика.

Is een belucht.

Там нет перелива!

This is one of my questions also

Best guess, something upstream a long the drain has been used. Water goes by, it sucks air down the drain. Still repair with mechanical drain, or better clean from roof vent.

@@-8_8- That was my first guess after doing research a while back. I've tried several times to tell maintenance, but it doesn't seem like they or the professional plumbers they call in agreement, even after sending a camera down my drain and finding nothing and tearing out my kitchen and replacing large sections of pipe under the floor.

@@AlKaseltzer87 If there are vacant apartments or bathrooms not being used near you/on your same line, that could also cause the gurgling noise. If any P traps got dried out from not being used, it could make the noise happen in your sink. If you're not experiencing any slow drainage, then you may want them to check vacant/unused sinks around you. They need to run the water in any of those sinks to make the P traps are full to see if the gurgling stops in your sink

No Blum

it has a non-return valve. only air can get in. water and air can't get out

In a pinch you can just drill a small hole and install an aquarium one way air valve as it doesn't take much air to break the siphon affect.

it won't stink. this is an aerator. only air can enter. air can't get out😎