How to select Rexroth solenoid valve and its selection points

Create Date: 2024-8-30 12:03:23|Source: Rexroth/Rexroth

1. Select the solenoid valve according to the pipeline parameters: diameter specification (i.e., DN) and interface mode

1. Determine the diameter (DN) size according to the inner diameter size or flow requirements of the on-site pipeline.

2. Interface mode, generally DN50 should choose flange 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 fluids: corrosion-resistant solenoid valves and stainless steel should be used, and edible net fluids: food stainless steel solenoid valves should be used.

2. High-temperature fluid: choose a solenoid valve made of high-temperature resistant electrical materials and sealing materials, and choose a piston structure type.

3. Fluid state: there are gaseous, liquid or mixed states, especially when the caliber is greater than DN25, it must be distinguished.

4. Fluid viscosity: Usually below 50St can be arbitrarily selected, if this value is exceeded, high viscosity solenoid valve should be selected.

3. Voltage selection: AC2207 and DC24 should be used as much as possible for voltage specifications.

Fourth, according to the pressure parameters to choose the solenoid valve: principle and structure varieties

1. Nominal pressure: The meaning of this parameter is the same as that of other general valves, which is determined according to the nominal pressure of the pipeline.

2. Working pressure: If the working pressure is low, the principle of direct action or step-by-step direct-action must be selected, and the direct-acting, step-by-step direct-acting and guided type can be selected when the bus low working pressure difference is above 0.04Mpa.

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 opened for a long time, and the duration is longer than the time to close, the normally open type should be selected.

2. If the opening time is short or the opening and closing time is not much, the normally closed type is selected.

3. However, some working conditions used for safety protection, such as furnace and kiln flame monitoring, can not be selected as normally open, and should be selected for long-term energization.
How to select Rexroth solenoid valve and its selection points

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