ус буцаахгүй хавхлага
check valve
обратный клапан
A valve that allows water to stream in one direction and will then close to prevent development of a back-flow.
Source https://www.lenntech.com/water-glossary.htmЗураг
check valve
обратный клапан
A valve that allows water to stream in one direction and will then close to prevent development of a back-flow.
Source https://www.lenntech.com/water-glossary.htm