Product Description:   Unloading valve has the function of regulating air pressure (overpressure unloading) and so on. It is the main part to ensure the reliable operation of brake system components. Technical parameters: Working pressure: 0.8MPa Operating temperature: -40~+80℃ Opening pressure (unloading pressure) : 0.8±0.02MPa Air port: 2-M22*1.5 Installation dimension mm: 2-∮9-70 Technical parameters: Adaptation: Xiamen XZ series loaders and all pneumatic control system engineering machinery using this specification model