Valve Selection Steps:

1. Identify the use and the operating conditions of the valve: applicable media, working pressure, operating temperature, etc.
2. Determine the nominal diameter and connection: flange, thread, welding, ferrule, quick loading, etc.
3. Determine operate method: manual, electric, electromagnetic, pneumatic or hydraulic, electrical linkage or electro-hydraulic linkage.
4. Determine the material of the casing and internal parts of the valve: gray cast iron, malleable cast iron, ductile iron, carbon steel, alloy steel, stainless steel, copper alloy, etc.
5 Select the type of valve: cut off valve, regulating valve, safety valve, etc.
6. Determine the type of valve: gate valve, globe valve, ball valve, butterfly valve, throttle valve, safety valve, pressure reducing valve, steam trap, etc.
7. Determine the parameters of the valve: For automatic valves, determine the allowable flow resistance, discharge capacity, back pressure, etc. according to different needs, and then determine the nominal diameter of the pipe and the diameter of the seat hole.
8. Determine the geometry of the selected valve: structural length, flange connection form and size, dimensions of the valve height direction after opening and closing, bolt hole size and number of connections, and overall valve dimensions.
9. Use the available information: select the appropriate valve product from the valve catalog, valve product samples, etc.
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