DDD Enterprise Co., Ltd.(Pin Ching Automatic Valves Co., Ltd.) was founded in 1983, Specializes in designing and manufacturing all kinds of fluid DDD automatic valves, Innovation and development of various advanced automatic valves, all to meet customer demand, widely used in hydropower air conditioning, electronic industry, water treatment industry, the fluid flow control switch, chemical plants, breweries, power plants, incineration plants, textile mills, fire equipment and many other industries. Automatic Valves Fluid - Solenoid Valves : Weather-proof, Explosion-proof, 2way, 3way, Metal-brass body, Stainless steel body, Plastic body, Reinforced-nylon body, Normally closed, Normally open, Manual override, Special solenoid valve position monitor…Etc. Fluid Media : Water(Hot-water), Steam, vacuum, Air, Gas, Oil, High pressure, Low temperature, Special Acid base fluid…Etc. Pneumatic Actuator Control - Solenoid Valves: Weather-proof, Explosion-proof, 3/2Way, 5/2Way, 5/3Way, Inline type, Namur type, Aluminum body, Stainless steel body, Plastic body…Etc. Electric Actuated Valves: Butterfly valves, Ball valves, Weather-proof, Explosion-proof, 2Way~5Way, Metal Body, Stainless steel body, Plastic body, Option-heater and Additional limit switches, Special-failure safe (Normally closed, Normally open), All series have Manual override (Lever or Hand-wheel), All series put-inside modulating controller. Pneumatic Actuated Valves: Butterfly valves, Ball valves, Weather-proof, Explosion-proof, 2Way~5Way, Metal Body, Stainless steel body, Plastic body, Option- Weather-proof or Explosion-proof Limit switch box, Solenoid valve, Valve positioner , Air set,  Declutch Gear operator….Etc, Everything can be produced. Pneumatic and Electric Valves Fluid Media: Steam, Hot water, Water, Gas , Oil, Hot Oil, Special thermal oil, Special Fluids, Acid-base fluid, Ultra High Temperature, Ultra-low temperature…Etc. Ball Valves : Manual, Worm gear, Metal-brass body, Stainless steel body, Plastic body(UPVC,PP,CPVC…), manufacturing all kinds Teflon Seat(Special Teflon Seat Can be customized, Special Metal Seat(Can be customized)…Etc. Butterfly Valves : Manual, Worm gear, Metal body, Stainless steel body, Plastic body(UPVC,PP,CPVC…), manufacturing all kinds NBR ,EPDM, Viton (FPM) and Teflon Seat , manufacturing all kinds of Metal Seat(Can be customized)…Etc. Quality All products are to undergo a rigorous factory testing to ensure the highest quality products. Use professional instrument test. Machined surface and paint a good appearance.