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Product description:

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Applicable models XCMG ：

QY25K5C_2 QY70KC QY50KC QY25K5D_2 QY25KC  XCT35_BR  QY25K5D_3 QY25K5D_3 QY25K5C_1  QY55KC_1 QY25K5F_1 QY50KC QY50K5C_1 QY25K5C_2 QY25K5F QY25K5C QY25K5D_2 QY30KC QY55K5C_2    QY25K5F_1 QY25K5D_1 QY30KC QY55K5D

XCT80L6 XCT130_1  XCT12  XCT80L6  XCT25L4_S  XCA40_M  XCA30_JY  XCT25L5_3  XCT55L5  XCT110_1  XCT60L6  XCT12  XCT25L5_SR   XCT25L5_2  XCT95L7  XCT75L7  QY110K8C  QY95K7C  QY110K7C  XCT100  XCT75_S  QY40KC  XCT90  XCT25  XCT25L5_E  QY70KC  QY40K5C_2  XCT60L6_1  QY75KC  QY100K7C  QY95KH  QY100K6C  QY50JW  XCT16_1  XCT100_BR  XCT60  QY20K5D  QY85KC  XCT25  XCT80L5  XCT100  XCT20L5_1  XCT75L6  XCT20L5  XCT80_S  XPD36  QY16KC  QY16KC  QY40K5D_1  QY25K5L  XCA40  QY40KD  QY80K5D  QY70K5D_1   QY50KD  QY20K5C XCT50_Y XCT16_Y  XCT25L4_Y  XCT80_Y  XCT60_Y XCT50_Y

and other XCT QY RT series models.

It is a combination of direct action and pilot type. When there is no pressure difference between the inlet and the outlet, after the power is turned on, the electromagnetic force directly lifts the pilot small valve and the main valve closing member up in turn, and the valve opens. When the inlet and outlet reach the starting pressure difference, after the power is turned on, the electromagnetic force pilots the small valve, the pressure in the lower chamber of the main valve rises, and the pressure in the upper chamber drops, so as to use the pressure difference to push the main valve upward; when the power is off, the pilot valve uses a spring The force or medium pressure pushes the closing member and moves down, closing the valve.
During normal operation, they are energized and closed, thereby sealing the oil-resistant oil passage on the automatic shutdown emergency cut-off main pipe, so that the oil pressure in the lower cavity of the piston of all steam actuators can be established. When the solenoid valve is de-energized and turned on, the main pipe drains oil, causing all steam valves to close and the steam turbine to stop. The solenoid valve (20/AST) is arranged in series and parallel, so that it has multiple protection. At least one solenoid valve per channel is open to cause shutdown. At the same time, the reliability is improved, and the four AS solenoid valves will not cause downtime if one of the four AS solenoid valves is damaged or rejected.