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mac solenoid valve selection method, mac solenoid valve applicability instructions
Author:RinckSource:https://www.diancifa.cc/Update time:2025-01-24 16:59:45 Read:
mac solenoid valve selection method mac solenoid valve selection 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 mode, special requirements to select). Mac solenoid valve selection basis: 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 requires a flange interface, and ≤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: corrosion-resistant solenoid valve and all stainless steel should be selected;edible ultra-clean fluid: food-grade stainless steel solenoid valve should be selected;2) High-temperature fluid: Required Choose a solenoid valve made of high-temperature resistant electrical materials and sealing materials, and choose a piston structure type;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 Use 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 is 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. MAC solenoid valve applicability description 1. MAC solenoid valve medium characteristics 1) Different types of solenoid valves are selected for gas, liquid or mixed states;2) Products with different specifications of medium temperature, otherwise the coil will burn out and the seals will age, which will seriously affect Life span;3) Medium viscosity, usually below 50cSt. If it exceeds this value, when the diameter is greater than 15mm, use a multifunctional solenoid valve;when the diameter is less than 15mm, use a high viscosity solenoid valve. 4) When the medium cleanliness is not high, a backflush filter valve should be installed in front of the solenoid valve. When the pressure is low, a direct-acting diaphragm solenoid valve can be used;5) If the medium flows in a directional manner and no reverse flow is allowed, a two-way solenoid valve is required. Circulation;6) The medium temperature should be selected within the allowable range of the solenoid valve. 2. MAC solenoid valve pipeline parameters 1) Select the valve port and model according to the medium flow direction requirements and pipeline connection method;2) Select the nominal diameter according to the flow rate and valve Kv value, or the same pipe inner diameter;3) Working pressure difference : If the minimum working pressure difference is above 0.04Mpa, the indirect pilot type can be selected;if the minimum working pressure difference is close to or less than zero, the direct-acting type or the step-by-step direct type must be selected. 3. MAC solenoid valve environmental conditions 1) The maximum and minimum temperatures of the environment should be selected within the allowable range;2) Waterproof solenoid valves should be selected when the relative humidity in the environment is high and there are water droplets and rain;3) There are often