一、进口不锈钢内螺纹止回阀

进口不锈钢内螺纹止回阀是指采用不锈钢材质，内螺纹连接，依靠介质本身流动而自动开、闭阀瓣，用来防止介质倒流的阀门，又称逆止阀、单向阀、逆流阀、和背压阀。止回阀属于一种自动阀门，其主要作用是防止介质倒流、防止泵及驱动电动机反转，以及容器介质的泄放。止回阀还可用于给其中的压力可能升至超过系统压的辅助系统提供补给的管路上。止回阀主要可分为旋启式止回阀（依重心旋转）与升降式止回阀（沿轴线移动）。

止回阀的阀门的作用是只允许介质向一个方向流动，而且阻止方向流动。通常这种阀门是自动工作的，在一个方向流动的流体压力作用下，阀瓣打开；流体反方向流动时，由流体压力和阀瓣的自重合阀瓣作用于阀座，从而切断流动。

Stainless steel internal thread check valve refers to a valve made of stainless steel material, with internal thread connection, which automatically opens and closes the valve disc based on the flow of the medium itself, to prevent medium backflow. It is also known as a check valve, one-way valve, backflow valve, and backpressure valve. Check valve is an automatic valve that mainly functions to prevent medium backflow, prevent pump and drive motor reversal, and prevent the discharge of container medium. Check valves can also be used on pipelines that provide supply to auxiliary systems whose pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).

The function of a check valve is to only allow the medium to flow in one direction and to prevent flow in that direction. Usually, this type of valve operates automatically, and under the pressure of fluid flowing in one direction, the valve disc opens; When the fluid flows in the opposite direction, the valve seat is cut off by the fluid pressure and the self weight of the valve disc, which acts on the valve seat.

二、进口不锈钢内螺纹止回阀特点

1、螺纹可按BSPT、BSP、NPT、DIN259/2999生产

2、硅溶胶精密铸造不诱钢阀体、阀盖

3、适用于水、油、气及某些腐蚀性气体介质

4、常温额定工作压力为1000PS1（7.0）Mpa0)

1. Thread can be produced according to BSPT, BSP, NPT, DIN259/2999

2. Silica sol precision casting for stainless steel valve bodies and covers

3. Suitable for water, oil, gas, and certain corrosive gas media

4. Rated working pressure at room temperature is 1000PS1 (7.0) Mpa 0)

三、进口不锈钢内螺纹止回阀零件材料

四、进口不锈钢内螺纹止回阀性能规范

五、进口不锈钢内螺纹止回阀连接尺寸