... . By operating manual diversion valve on the motor, the winch can perform hoisting, lowering and stopping actions to the wire ... foot double manual brakes for fear of unexpected accidents. The winch is especially fit for hauling, lifting and other work ... sites, platforms of oilfields off-sea and inland, etc.Pneumatic Winch Main Technical Specification: ModelJQHSB50*12Pressure of Compressed Air (Mpa)0 ...