• Surface painting instead of surface galvanizing makes the multiway valve more beautiful and improves corrosion resistance • Optimized valve flow path effectively reduces pressure loss • Hydraulic lock can be selected for middle section to reduce leakage • Main relief valve performance is stable and reliable • The electromagnetic unloading valve is a high-performance solenoid ball valve with zero leakage and sufficient coil thrust, which effective• ly solves the problem of coil temperature rise for the electric magnetic thrust