矩形風管止回閥

產(chǎn)品描述：

矩形風管止回閥水平安裝在風管或空調(diào)管道中，當風機停轉時，防止氣體倒流，起到單向止回的作用，但要求風管中風速不能小于8m/s。

Product description:

The rectangular duct check valve is installed horizontally in the air duct or air-conditioning duct. When the fan stops, it prevents the gas from flowing back and plays a single-side check role, but the wind speed in the air duct is required to be no less than 8m/s.