503044 JSD-L22 Manually-Electrically Operated MDCV

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Purpose and characteritics

The JSD-L22 Manually-Electrically Operated Multifunction MDCV is a patented product series (patent No.: ZL.201520799235.1) persistently developed by our company from 2016 to 2017. After prior shunting and pressure reduction and multistage filtration, a small amount of pressure oil serves as control oil source of pilot electromagnetic valve, and pilot oil cylinder is controlled to drive reversing slide valve to switch main oil line. When the pilot electromagnetic valve is at neutral position or fails, control handle at one end of valve group can perform normal reversing work to meet the working conditions or safety needs. When the pilot electromagnetic valve and the control handle are at neutral position, hydraulic system is in a low-pressure unloading state; when neutral position selection electromagnetic valve is unloading, the hydraulic system is in a complete unloading state.

The JSD22 specification, specially designed for large compression garbage truck, hook-headed garbage truck, compression garbage station, packing machine, brick machine, die casting machine, multifunctional drill rig, engineering machinery and large and medium hydraulic machinery with similar functional requirements, can satisfy different needs of multiple execution mechanisms in pressure regulation, overload protection, throttling, converging, differential acceleration, synchronization, self-locking and pressure signal transfer, and meets the requirements of short-distance or long-distance and wired or wireless control.

The series of products features high pressure, large flow, delicate structure, multiple control functions, high reliability, complete specifications and wide application range; compared with other control modes, they have remarkably high cost performance and are first choice for upgrading the control systems of various kinds of hydraulic machinery.

Performance description

1. The JSD22 has function of plugging multiple auxiliary valves in single layer and double layers.

2. To select a single-layer jack reversing valve, auxiliary valves such as overload valve (with oil supplement function), oil supplement valve, pressure relay and pressure transmitter are optionally plugged at the port ends A and B.

3. To select a double-layer jack reversing valve, overload valve (with oil supplement function), oil supplement valve, pressure relay and pressure transmitter may be plugged in the first layer of port ends A and B; auxiliary valves such as pilot-operated hydraulic lock, one-way throttle valve, unidirectional balance valve, pressure relay and pressure transmitter are plugged in the second layer.

4. Special orders are required for adding the functions such as converging valve group, unloading converging valve group, differential acceleration valve group and synchronous valve group.5. To select function combination of the valve groups for the JSD22, the single-layer valve group and the double-layer valve group are classified and combined to realize convenient connection of the ports of low plate valve groups.

5. To select function combination of the valve groups for the JSD22, the single-layer valve group and the double-layer valve group are classified and combined to realize convenient connection of the ports of low plate valve groups.

Performance characteristics

1. The slide valve functions of types 0, Y, A, B and N are available for choice.

2. Series and parallel oil line ways are applied to JSD22.

3. Only spring-return control mode is applied.

4. Any combination of sections1-8 is allowed.

5. Bridge valve may be adopted in return valve group, i.e., pressure oil may be output to other control elements for use when this multi-way valve is not in use.

6. Control mode of proportional pressure reducing electromagnetic valve may be selected.

7. Pilot oil pressure may be unloaded when neutral-position selection electromagnetic valve is unloading.

Model description