What Is a Pull Solenoid?
The iron core inside the magnetic barrier sleeve of the FESTO solenoid valve is completed, and there is no dynamic seal, so the leakage is easy to be blocked. Electric valve torque control is not easy, it is easy to cause internal leakage, and even break the stem head; the structure of the solenoid valve is easy to control internal leakage until it reaches zero. Therefore, the use of solenoid valves is particularly safe, especially suitable for corrosive, toxic or high and low temperature media.
FESTO solenoid valve
- Driver (cylinder and electric driver)
- Valves (solenoid valve, pneumatic control valve, manual control valve and mechanical control valve, etc.)
- Valve terminal and connection system
- Robot and assembly technology
- Air source processing device
- Trachea and connector
- Vacuum technology
- Positioning and quality detection system
- Sensor and controller
- Teaching and training products
- Main features of FESTO solenoid valve (1) The external leakage is blocked, the internal leakage is easy to control, and it is safe to use. Internal and external leaks are a threat to safety. Other automatic control valves usually extend the valve stem, and the rotation or movement of the valve core is controlled by electric, pneumatic and hydraulic actuators. This must solve the problem of external leakage of the long-term action valve stem dynamic seal; only the solenoid valve is completed by the electromagnetic force acting on the iron core sealed in the magnetic insulation sleeve of the electric regulating valve, and there is no dynamic seal, so the leakage is easy to be blocked . (2) The system is simple, the computer is connected, and the price is low. The solenoid valve itself has a simple structure and a low price. Compared with a regulating valve, etc.
- If the festo solenoid valve suddenly has problems and there are no replacement parts, the following methods can be used for emergency treatment: 1. Turn the solenoid valve connector by hand until you hear a "click", and press The connector is then tightly wrapped with adhesive tape, and then the input line plug is pulled out for a one-touch one-off test. If there is a "click, click" action sound, it indicates that it has returned to normal and can continue to be used. Note that the above process should be performed when the ignition switch is turned on.
- 2. If it is confirmed that the idling solenoid valve is damaged, it is to restore the idling effect. The solenoid valve should be removed and blocked with a suitable screw plug to prevent air leakage. In this way, the solenoid valve loses its function and becomes a carburetor without an idle solenoid valve.
- First, FESTO solenoid valve applicable control accuracy
- a. Action time: refers to the time from when the electrical signal is turned on or off to the completion of the main valve action. The patented multifunctional solenoid valve can adjust the opening and closing time separately, which can not only meet the control accuracy requirements, but also prevent water hammer damage. b. Ordinary solenoid valve has only two positions, on and off. When high control accuracy is required and parameters are required to be stable, please select a multi-position solenoid valve.
- c. Leakage value The leakage value given on the sample is a common economic grade. If it is too high, please make a special order.
- Applicable power supply
- a. According to the type of power supply, AC and DC solenoid valves are selected. In general, AC power is easy to access.
- b. For voltage specifications, AC220V.DC24V is preferred.
- c, power supply voltage fluctuations usually choose +% 10% .- 15% for AC, DC allow ±% 10 or so, if it is out of tolerance, you must take voltage stabilization measures or make special orders.
- d. The rated current and power consumption should be selected according to the power supply capacity. It should be noted that the VA value is higher when the AC is started. When the capacity is insufficient, the indirect pilot solenoid valve should be preferentially selected.
- Applicable environment
- a. The maximum and minimum temperature of the environment should be selected within the allowable range, and special orders should be made if there is any excess.
- b. Waterproof solenoid valve should be selected in the environment with high relative humidity and water drops and rain.
- c. There are often vibration, bumps and shocks in the environment. Special varieties should be selected, such as marine solenoid valves.
- d. For use in corrosive or explosive environments, it is preferred to choose corrosion resistance according to safety requirements.
- e. If the environmental space is limited, please choose a multi-function solenoid valve because it eliminates the bypass and three manual valves and facilitates online maintenance. Applicable medium:
- 1. Different types of solenoid valves are used in the gas-liquid or mixed state.
- 2. Medium temperature products with different specifications, otherwise the coil will burn out and the seals will age, which will seriously affect the service life. The medium temperature should be selected within the allowable range of the solenoid valve.
- 3. Medium viscosity, usually below 50cSt. If this value is exceeded, a high-viscosity solenoid valve with a diameter of less than 15mm is ordered.
- 4. When the medium cleanliness is not high, a backwash filter valve should be equipped in front of the solenoid valve. If the medium is in a directional flow, no reverse flow is allowed.
- Fourth, the applicable pipeline:
- a. Select the valve port and model according to the requirements of the medium flow direction and the pipe connection method.
- b. Select the nominal diameter according to the flow rate and the valve Kv value, or choose the same diameter as the pipe.
- c. Working pressure difference The minimum working pressure difference above 0.04Mpa is optional with the indirect pilot type; the minimum working pressure difference close to or less than zero must use the direct-acting or step-wise direct type.
- FESTO solenoid valve