Spirax Sarco steam traps within TD16 has an active valve, both sensitive parts is action performed pieces. Depending on the thermodynamic principles flow rate and volume of steam and condensate through the change, so that the differential pressure valve have different up and down, driven valve switch valves. Leakage rate of 3%, the degree of supercooling of 8 ℃ -15 ℃. When the device starts cooling off condensate piping, condensate valve opened by the working pressure, rapid discharge. When the condensate discharge is completed, the steam is then discharged, because larger than the condensation of water vapor volume and flow rate, so that the differential pressure valve to generate up and down, quickly close the valve in the steam flow rate of suction. When the valve is closed, both sides of the valve under pressure, the valve below the force area is less than the above force area, due to the pressure inside the trap steam from the steam chamber pressure, so the valve on top of the force is greater than the following, the valve tightly closed. When the steam chamber inside the steam trap cooled to condense water vapor pressure inside the room disappears. Condensate pushed by work pressure valves, condensate continued discharge cycle work, intermittent drainage. Spirax Sarco TD16 trap combines safe and reliable, simple structure and high efficiency, the maximum working pressure up to 120barg. Spirax Sarco Spirax Sarco steam traps heat TD16 Series users throughout the world because of the following characteristics: (1) body structure strong, simple, light weight. Operating pressure range. (2) only one moving part a butterfly hardened stainless steel sheet, has a long service life. At the same time can be a check valve function. (3) the discharge of drainage and intermittent quickly closed tightly to ensure that no leakage. (4) can be subjected to overheating, water hammer, frozen, corrosive condensate. Clicking sound when the fall issue of the seat (5) disc, to facilitate the detection performance. (6) can work in any mounting position.