PW160-7 Relief valve 723-30-91200 excavator accessories main relief valve hydraulic pump

The solenoid valve uses an electromagnet to push the valve core to control the direction of compressed air, thereby controlling the direction of the pneumatic actuator switch.
The electromagnet used to operate the solenoid valve is divided into AC and DC:

1. The voltage of AC electromagnet is generally 220 volts. It is characterized by large starting power, short reversing time and low price. However, when the valve core is stuck or the suction is not enough and the iron core is not sucked on, the electromagnet is easy to burn out due to excessive current, so the working reliability is poor, the impact of action, and the life is low.

2.DC electromagnet voltage is generally 24 volts. Its advantages are reliable work, not because the spore is stuck and burned out, long life, small size, but the starting power is smaller than the AC electromagnet, and in the absence of DC power supply, the need for rectification equipment.
In order to improve the working reliability and life of the electromagnetic reversing valve, in recent years, wet electromagnet is increasingly widely used at home and abroad, this electromagnet and the slide valve push rod do not need to be sealed, eliminating the friction at the O-shaped sealing ring, its electromagnetic coil outside directly sealed with engineering plastic, not another metal shell, which ensures insulation, but also conducive to heat dissipation, so reliable work, Low impact, long life.
So far, the solenoid valve at home and abroad is divided into three categories in principle (namely: direct acting type, step child pilot type), and from the difference in valve disc structure and material and principle difference is divided into six sub-categories (direct acting diaphragm structure, step double plate structure, pilot film structure, direct acting piston structure, step direct acting piston structure, pilot piston structure).

Cartridge valves provide equipment designers with many advantages in terms of conventional integrated valve blocks:

      1. System integrated valve block simplifies the machine pipeline.
Designing the valve block to meet the requirements of the equipment is better than designing the equipment to meet the requirements of the hydraulic system. Installation costs are usually significantly reduced

       2. Stop leaks.
External leakage is often the main reason for the limited application of hydraulic systems, and the O-ring fitted to the valve hole on the integrated valve block can eliminate external leakage.

     3. The downtime and maintenance time of the integrated loop valve block is greatly reduced, and the replacement of the component will not affect the related pipeline or it will not be solved
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    4. The integrated hydraulic circuit can be centralized on a single machine or dispersed for certain needs to optimize the pipeline.
In terms of installation, there are no specific installation requirements. Custom threaded insert integrated valve blocks offer unmatched flexibility
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