Exhaust blade valve 废气叶轮片

blade regulating valve 叶片调节阀

blade control valve body 铲刀控制阀体

blade lift control valve 铲刀升降控制阀

blade tip check valve 铲刀倾斜单向阀

blade lift check valve 铲刀升降单向阀

blade tilt relief valve 铲刀倾斜安全阀

blade tip control valve 铲刀倾斜控制阀

blade lift relief valve 铲刀升降安全阀