Product Description Product Description Dry couplings are the smart choice for the transportation of hazardous fluids.Compared with traditional couplings, it greatly improves the connection speed: during the unloading process, the built-in valve of the coupling is closed in advance, avoiding the liquid leakage or volatilization to the surrounding environment, reducing the chance of the operator … Continue reading China Professional 3/4″-4″ Custom Dry Disconnect Safety Couplings for Hazardous Fluids Transfer