G771K208A  | 伺服阀  |  内部并联接线，反极性保护

MOOG伺服阀由永磁力矩马达、喷嘴、档板、阀芯、阀套和控制腔组成。当输入线圈通入电流 伺服阀时，档板向右移动，使右边喷嘴的节流作用加强，流星减少，右侧背压上升;同时使左边喷嘴节流作用减小，流量增加，左侧背压下降。阀芯两端的作用力失去平衡,阀芯遂向左移动。首压油从S流向C2，送到贫载。负载回油通过 C1流过回油口，进入油箱。阀芯的位移量与力矩马达的输入电流成正比，作用在阀芯上的液压力与弹簧力相平衡，因此在平衡状态下力矩马达的差动电流与阀芯的位移成正比。如果输入的电流反向，则流量也反向，表中是伺服阀的分类。

物理参数

型号：G771K208A

规格

（安装型式） 尺寸04（ISO 10372-04-04-0-92）

重量 1.0至1.7 kg（2.2至3.8 lbs）

附加选择

高零偏，磁性零位调节，透气马达盖，特殊阀芯阀套（BSA）配合，内部并联接线，反极性保护，超高响应。

MOOG servo valve is composed of permanent magnet torque motor, nozzle, stop plate, valve core, valve sleeve and control chamber. When the input coil passes through the current servo valve, the baffle moves to the right, so that the throttling effect of the right nozzle is strengthened, the meteor is reduced, and the right side back pressure is increased; At the same time, the throttling effect of the left nozzle is reduced, the flow rate is increased, and the back pressure on the left side is decreased. The forces at both ends of the spool are out of balance and the spool moves to the left. First pressure oil flows from S to C2 to lean load. The load return oil flows through the C1 return port and into the fuel tank. The displacement of the spool is proportional to the input current of the torque motor, and the liquid pressure acting on the spool is balanced with the spring force, so the differential current of the torque motor is proportional to the displacement of the spool in the equilibrium state. If the input current is reversed, the flow is also reversed, and the table is the classification of servo valves.

Physical parameter

Model: G771K208A

specification

(Mounting type) Dimensions 04 (ISO 10372-04-04-0-92)

Weight 1.0 to 1.7 kg (2.2 to 3.8 lbs)

Additional option

High zero bias, magnetic zero adjustment, breathable motor cover, special spool valve sleeve (BSA) fit, internal parallel wiring, reverse polarity protection, ultra-high response.