For Carter excavator rotary solenoid valve 3E-3748 hydraulic valve R2900G

Working principle of proportional solenoid valve

      Electro-hydraulic proportional valve is the proportional electromagnet input voltage signal in the valve to produce corresponding action, so that the working valve spool displacement, valve mouth ruler
Inch changes and thus completes the pressure, flow output element proportional to the input voltage. Spool displacement can also be mechanical, hydraulic or
Electrical form for feedback. Electro-hydraulic proportional valve has a variety of forms, easy to form the use of electrical and computer control of various electro-hydraulic system System, high control accuracy, flexible installation and use, strong anti-pollution ability and other advantages, the application field is expanding day by day. Recent research and development The production of plug-in proportional valves and proportional multi way valves fully consider the characteristics of the use of construction machinery, with pilot control, load sensing and pressure Compensation and other functions. It is of great significance to improve the overall technical level of mobile hydraulic machinery. Especially electronically controlled pilot operation,Wireless remote control and wired remote control operation have shown a good application prospect.

The characteristics and uses of cartridge valves
 

    Cartridge valve is widely used in natural gas, oil products, chemical industry, metallurgy, paper making, electric power, mining, printing and dyeing, biopharmaceutical, daily chemical industry, food and beverage, water treatment and air treatment and other industries of fluid control or regulation control, with automatic instrumentation used.
Features:
1. Make the valve open or blocked by rotating the spool.
2. Cartridge valve switch light, small size,
3. Can do large diameter valve,
4. Reliable sealing, simple structure, easy maintenance,
5. The sealing surface and the spherical surface are often in a closed state, which is not easy to be eroded by the medium.

     The structure features are:

      Insert actuator: The new series GT type insert actuator, with double acting and single acting (spring return), rack and pinion drive, safe and reliable; Large diameter valve adopts series HAW plug-in actuator fork drive, reasonable structure, large output torque, double acting and single acting (spring return); Refer to our cartridge actuator sample.

     Shell structure: The valve body of the fixed ball valve can be designed into three forms of casting structure, forging structure and fully welded structure according to the needs of users and the actual working conditions, of which the ball valve of the fully welded structure is mainly suitable for buried use.