How to select a solenoid valve? What parameters are needed for solenoid valve selection?

Solenoid valve is an industrial equipment controlled by electromagnetism. It is a basic component of automation used to control fluids. It is an actuator and is not limited to hydraulic and pneumatic. Used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. The selection of solenoid valves should first follow the four principles of safety, reliability, applicability, and economy, and secondly, based on six aspects of on-site working conditions (i.e., pipeline parameters, fluid parameters, pressure parameters, electrical parameters, action methods, Select according to special requirements). How to select a solenoid valve? What parameters are needed for solenoid valve selection? 1. Select the solenoid valve according to the pipeline parameters: diameter specification (i.e. DN), interface mode 1) Determine the diameter (DN) size according to the on-site pipeline inner diameter size or flow requirements;2) Interface mode, generally >DN50 should be selected Blue interface, ≤DN50 can be freely selected according to user needs. 2. Select the solenoid valve according to the fluid parameters: material and temperature group 1) Corrosive fluid: solenoid valves and all stainless steel should be selected;edible ultra-clean fluids: food-grade stainless steel solenoid valves should be selected;2) high-temperature fluids: choose to use Solenoid valves made of high-temperature resistant electrical materials and sealing materials, and piston structure types must be selected;3) Fluid state: gaseous, liquid or mixed state, especially when the diameter is larger than DN25, they must be distinguished;4 ) Fluid viscosity: Usually it can be selected arbitrarily below 50cSt. If it exceeds this value, a high viscosity solenoid valve must be selected. 3. Select the solenoid valve according to the pressure parameters: Principle and structural variety 1) Nominal pressure: This parameter has the same meaning as other general valves, and is determined based on the nominal pressure of the pipeline;2) Working pressure: If the working pressure is low, it must Choose the direct-acting or step-by-step direct-acting principle;when the minimum working pressure difference is above 0.04Mpa, direct-acting, step-by-step direct-acting, and pilot-operated types can be selected. 4. Electrical selection: It is more convenient to give priority to AC220V and DC24 for voltage specifications. 5. Choose according to the length of continuous working time: normally closed, normally open, or continuously energized 1) When the solenoid valve needs to be open for a long time, and the duration is longer than the closed time, the normally open type should be selected;2) If it is open When the time is short or the opening and closing time is not long, the normally closed type should be selected;3) However, for some working conditions used for safety protection, such as furnace and kiln flame monitoring, the normally open type cannot be selected, and the long-term energized type should be selected. 6. Select auxiliary functions according to environmental requirements: explosion-proof, non-return, manual, waterproof fog, water spray, and diving. The above is how to select a solenoid valve. What parameters are needed for solenoid valve selection? Content introduction, if you want to know more relevant information, please log in to www.diancifa.cc to view the Dianwei Pneumatic.