该产品是控制压力机制动器、离合器正常工作的一种专用气动元件。当系统中或阀本身出现故障时,它能使出口端口的气压降低到入口压力的2%之下,信号反馈使相应开关跳闸从而使压力机进束停车, 以确保设备及人身安全。 This valve is used to contorl brake /clucth of the press. It can stop the press immediately when the system or valve self fuilsvy reduce pressure of outlet bess than 2% of inlet.