单和双电磁阀建设。

Single and double solenoid constructions available.

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双电磁阀（电磁缓冲器）和伺服阀回路平行布置。

A two-solenoid valve (battery-buffered) is arranged in parallel to the servo circuit.

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主马达采用双电磁阀控制系统，当一个电磁阀出现故障时，设备还能正常工作，不影响任何使用。

The main motor adopts double electromagnetic controlling system. The operation won't be affected if malfunction happens to the electromagnetic valve but equipment still works.

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