How to Choose a Good Solenoid Valve？
First, Selection based on
solenoid valve selection should first follow the four principles of safety, reliability, applicability, and economy, followed by six aspects of the field conditions (namely, pipeline parameters, fluid parameters, pressure parameters, electrical parameters, mode of action, and special requirements).
1. Select the solenoid valve according to the pipeline parameters: size specification (DN), interface mode
1. Determine the diameter (DN) of the pipeline according to the requirements of internal diameter or flow rate on site.
2. Interface mode, general & GT;DN50 to choose flange interface, ≤DN50 can be free to choose according to user needs.
Two, according to the fluid parameters to choose the solenoid valve: material, temperature group
1. Corrosive fluid: corrosion resistant solenoid valve and all stainless steel should be selected; Super clean fluid: food grade stainless steel solenoid valve should be selected.
2, high-temperature fluid: to choose the use of high-temperature electrical materials and sealing materials manufactured solenoid valve, and to choose the type of piston structure.
3. Liquid state: large to gaseous, liquid, or mixed state, especially when the diameter is larger than DN25, it must be distinguished.
4, fluid viscosity: usually below 50cSt can be arbitrarily selected, if more than this value, to choose a high viscosity solenoid valve.
Three, according to the pressure parameters to choose the solenoid valve: principle and structure varieties
1, nominal pressure: this parameter and other common valves have the same meaning, it is based on the nominal pressure to determine the pipeline.
2. Working pressure: if the working pressure is low, the principle of direct-acting or step-by-step direct-acting must be adopted; When the minimum working pressure difference is above 0.04mpa, direct acting, step by step direct acting, pilot type can be selected.
Iv. Electrical selection
It is convenient to give priority to AC220V and DC24 for voltage specification.
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