是一种阀瓣沿着阀体垂直中心线滑动的止回阀，只能安装在水平管道上，高压小口径的止回阀阀瓣可采用圆球形。 Taiwan Fushan stainless steel flange check valve is a check valve whose valve disc slides along the vertical centerline of the valve body. It can only be installed on horizontal pipelines. The high-pressure small-diameter check valve disc can be spherical.
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