Brief description of the relationship between regulating valve stroke and flow rate for fluorine lined check valves

check valve Briefly describe the relationship between the stroke of the regulating valve and the flow rate

The change in stroke of the regulating valve will cause a change in the throttling area (also known as the flow area) between the valve seat and the valve plug, thereby altering the fluid flow rate. The relative throttling area of a regulating valve, i.e. the relationship between relative flow rate and relative stroke, is usually referred to as flow characteristics. Relative stroke refers to the ratio of the stroke field l of a regulating valve at a certain opening degree to the stroke L when fully opened. Relative flow rate refers to the ratio of the flow rate Q at a certain opening degree to the flow rate Q100 at the fully open degree. Mathematically expressed as: Q/Q100=f (l/L).

The flow characteristics of regulating valves are generally inherent (also known as ideal) Fluorine lined DC globe valve Traffic characteristics and installation traffic characteristics. _Clamp type Fluorine-lined Butterfly Valve The inherent flow characteristics refer to the relationship between the opening of the regulating valve and the flow rate when the pressure drop at both ends of the regulating valve remains constant. It is determined by the manufacturer. The installation flow characteristics refer to the relationship between the opening and flow rate of the regulating valve installed on the pipeline.

PTFE lined valve The inherent flow characteristics usually include three types: straight line, equal percentage, and quick opening (also known as two position switch type). When the pressure drop of the regulating valve is constant, the density p is a constant, and the flow rate Q is proportional to the flow coefficient C,

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