... ,PPO parts,large output torque.18.Smooth flow, no block up19.Tight close, no leakage20.The power is cut ... /heating system,Low voltage plumbing system 8.Small equipment for automatic control9.Water equipment,auto-control watersystem,industrial mini- ... valve, hydraulic valve, electric valve, electronic valve.electric valve for water automatic control,brass or stainless steelmini motorized valve, actuated ...