Pneumatic diaphragm Y-type steam trap is a new generation of steam trap developed, designed and produced by our company according to the equipment of thermal power plant. The product is designed with a flow close to a straight line, which reduces flow resistance and adopts the principle of secondary throttling to reduce erosion and increase service life. The valve core and valve seat are made of integral hard alloy, and the internal leakage is closed ≤V level. The removable middle cavity seal design eliminates external leakage and is easy to repair. It can also be used in flammable and explosive occasions. According to the signal of the control system or the regulating instrument, the valve is cut off or opened, thereby realizing the use requirements of the controlled parameters. Therefore, it is widely used in remote control of thermal power plants and other industries. This type of product is divided into positive and negative action, and its nominal diameter grade DN (mm) ranges from 20 to 100; the nominal pressure grade PN ranges from 150Ib (2.0MPa) and other grades; the gas source power (MPa) is 0.14~0.4; the signal range Pr (KPa) is 20~100, 40~200; the leakage is almost close to zero leakage. There are many specifications for this product to choose from.