1)hydraulic flow control valve group,液压油流量控制阀组件2)hydraulic control valve group,液压控制阀组件3)solenoid operated hydraulic flow control valve group,电磁操纵液压流量控制阀组4)flow control and relief valve group,流量控制及安全阀组件5)fluid combination control valve,液流控制组合阀6)hpcu main control valve group,静液压动力控制装置主控制阀组件
