The torque control valve of hydraulic tong is developed to protect the scrws of tube and suck rod from being damaged or deformed caused by over tightness.

• 液压油管钳扭矩控制阀用于油管和抽油杆上螺纹时控制其扭矩值,以免扭矩过大而损坏螺纹或造成本体变形。