Comparison between fluorine lined check valves and other types of valves

      check valve There are quite a few types, including disc check valves, pipeline check valves, soundproof check valves, and so on. So what are the differences between fluorine lined check valves and other types of valves?

Fluorine lined check valve: a check valve in which the valve disc rotates around the pin shaft inside the valve seat. The disc check valve has a simple structure and can only be installed on horizontal pipelines, with good sealing performance. Fluorine lined DC globe valve A valve whose valve slides along the centerline of the valve body. Pipeline check valve is a newly emerged type of valve, which has a small volume, light weight, and good processing technology, and is one of the development directions of check valves. But the fluid resistance coefficient is slightly larger than that of a swing check valve. Compression type check valve: This type of valve is used as a boiler feedwater and steam shut-off valve, and it has the comprehensive function of a lift type check valve and a globe valve or angle valve.

Check valve with valve disc sliding along the vertical centerline of the valve body, noise reducing check valve can only be installed on horizontal pipelines, clamp type Fluorine-lined Butterfly Valve The valve disc on the high-pressure small-diameter check valve can be made of a spherical ball. The valve body shape of the silencing check valve is the same as that of the globe valve (which can be used interchangeably with globe valves), so its fluid resistance coefficient is relatively high. Its structure is similar to that of a globe valve, with the same valve body and disc as the globe valve. The upper part of the valve disc and the lower part of the valve cover are processed with guide sleeves. The valve disc guide sleeve can freely rise and fall inside the valve disc guide sleeve. When the medium flows downstream, the valve disc opens by the thrust of the medium. When the medium stops flowing, the valve disc descends on the valve seat by self sagging, which prevents the medium from flowing back. The direction of the medium inlet and outlet channels of the straight through butterfly check valve is perpendicular to the direction of the valve seat channel; The vertical lift check valve has a medium inlet and outlet channel direction that is the same as the valve seat channel direction, and its flow resistance is smaller than that of the straight through type.

The valve disc of the fluorine lined check valve is disc-shaped and rotates around the axis of the valve seat channel. Due to the flow line of the internal channel, the flow resistance is smaller than that of the rising butterfly check valve, making it suitable for large diameter applications with low flow rate and little flow variation. However, it is not suitable for pulsating flow, and its sealing performance is not as good as that of the lifting type. Butterfly check valves are divided into three types: single disc, double disc, and half disc. These three forms are mainly classified according to the valve diameter, in order to prevent hydraulic shock when the medium stops flowing or flows back.
 

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