Views: 0 Author: Site Editor Publish Time: 2025-10-16 Origin: Site
The precautions for using the 4WE10 solenoid directional valve are as follows:
1. Installation and connection
Installation direction
The axis of the electromagnetic reversing valve must be installed in the horizontal direction. Vertical installation may cause the valve core, armature and other parts to reverse or reset abnormally due to the influence of gravity.
Connection method
According to the installation and connection methods of other hydraulic valves in the hydraulic system, select the appropriate installation and connection method. For electromagnetic reversing valves with plate-type connection, O-rings must be used to seal each oil port and the installation base plate. The surface of the base plate should be ground and processed to ensure flatness to avoid oil leakage.
Fixing screw
During installation, the fixed connection screw should be evenly stressed to prevent the valve body from deforming or the valve core from being stuck.
2. Electrical control
Power matching
The voltage used must be consistent with the coil voltage to avoid coil burnout. Electromagnets are divided into DC and AC, and the appropriate model needs to be selected according to the control power supply parameters.
interlocking design
The two electromagnets of a double-solenoid solenoid valve cannot be energized at the same time. When designing the electronic control system of hydraulic equipment, the actions of the two electromagnets should be interlocked to prevent malfunction or coil burnout.
Electromagnet selection
Select the appropriate electromagnet (such as wet electromagnet, wide voltage electromagnet, etc.) according to the power supply type, service life, switching frequency, safety features, etc.
3. Hydraulic system adaptation
Pressure and flow limits
The use should not exceed the rated pressure and flow limits specified in the manufacturer's sample (for example, the rated pressure of the 4WE10 model is 31MPa, the rated flow is 100L/min) to avoid malfunction or leakage.
Return oil back pressure
The pressure at the oil return port T cannot exceed the allowable value (usually 6.3~7.0MPa), otherwise the reversing and resetting performance will be affected. If the system working pressure exceeds this value, the circuit design needs to be adjusted.
Median function selection
Select the appropriate slide valve function (such as O type, M type, Y type, etc.) according to the working requirements of the hydraulic system to ensure that the oil circuit state in the neutral position meets the requirements (such as unloading, closing, etc.).
4. Oil cleanliness
Filtering requirements
The matching gap between the solenoid valve core and the valve body hole is extremely small (usually 0.006~0.015mm), and the oil needs to be strictly filtered to prevent impurities from blocking the valve core. The recommended oil pollution level is NAS1638 level 9 or ISO4406 level 20/18/15.
pollution control
Before installation, it is necessary to clean oil pipes, pipe joints, fuel tanks, valve blocks and other components to prevent iron filings and other impurities from entering the system. Hydraulic oil contamination is a common cause of valve core sticking and leakage.
5. Operation and maintenance
Slide valve function inspection
Before use, confirm whether the slide valve function of the solenoid valve (such as forward installation or reverse installation) meets the system requirements to avoid affecting normal operation.
Temperature control
Ensure that the temperature of the working environment is stable, take cooling measures when the temperature is high, and take warming measures when the temperature is low, to avoid extreme temperature changes that affect the performance of the electromagnet and the strength of the material.
Regular inspection
Regularly check the solenoid coil, valve body and pipelines to remove contaminants and replace aging seals to extend service life.
6. Adaptation to special working conditions
Media adaptability
Select a solenoid valve with appropriate structure (such as pilot-operated, direct-acting type) according to the type of medium (such as air, water, steam, oil, etc.) to avoid performance degradation caused by mismatch in medium viscosity.
Explosion proof and protection
For outdoor installation or dusty places, waterproof and dustproof models must be selected; for highly corrosive media, diaphragm type or copper alloy valve shell materials must be selected (copper is prohibited for ammonia valves).
7. Failure prevention
Impact wear control
A buffer device or damper is introduced into the valve body design to absorb the kinetic energy at the moment of reversal and reduce impact wear. The system is designed with pressure balance in mind to avoid working under high pressure differences.
Materials and processing accuracy
High-quality valve body and valve core materials are selected to ensure that they will not deform in high-pressure environments; the fit clearance (such as 0.002~0.003mm) and geometric dimensional accuracy are strictly controlled during processing to reduce internal leakage.
