一、进口内螺纹旋启式止回阀

进口内螺纹旋启式止回阀，也叫内螺纹旋启式单向阀，内螺纹旋启式逆止阀，是指采用内螺纹的连接方式，不锈钢材质，口径DN10-100的，旋启式结构的止回阀。内螺纹止回阀的功能是用来防止管路中的介质倒流。内螺纹止回阀属于自动阀类，启闭件靠流动介质的力量自行开启或关闭。内螺纹止回阀只用于介质单向流动的管路上，阻止介质回流，以防发生事故。

Internal thread swing check valve, also known as internal thread swing check valve or internal thread swing check valve, refers to a check valve with an internal thread connection method, made of stainless steel material, with a diameter of DN10-100, and a swing structure. The function of the internal thread check valve is to prevent the backflow of medium in the pipeline. Internal thread check valves belong to the automatic valve category, and the opening and closing parts rely on the force of the flowing medium to open or close on their own. Internal thread check valves are only used on pipelines with unidirectional flow of medium to prevent medium backflow and prevent accidents.

二、进口内螺纹旋启式止回阀性能规范

三、进口内螺纹旋启式止回阀结构图