This product is a safety device for self-protection that is installed on a lorry-mounted crane. When the crane exceeds the torque at cargo loading/unloading, it can perform the self-protection function and prevent dumping and turnover that may cause machine damage and personal injury.

Basic parameters:
1. Max working pressure: 35MPa;
2. (Larger flow to be designed according to user demand);
3. Pressure setting of torque limit: 20MPa (preset at delivery), adjustable range: 10～35MPa;
4. In case of over torque, it automatically makes the system completely decompressed to avoid operation at over torque again;
5. Control pressure to release the over torque unloading (external control) ≥10 MPa.