The Single Disc Check Valve adopts a low-inertia design, featuring fast response and adjustable closing time. The contact surface between the valve disc and the valve seat is specially hardened, ensuring excellent wear resistance. A spring-assisted closing option is provided to prevent backflow of the medium. The overall structure is compact, and the installation orientation is not restricted. The working pressure can reach Class 2500, with a temperature range of -196℃ to 550℃. It meets the requirements of international standards such as API 6D.
Material: Carbon steel, stainless steel, alloy steel, etc
Nominal Size: NPS2~NPS12/DN50~DN300
Pressure Rate: Class150~ Class 2500/PN20~PN420
Temperature Range: -29℃~540℃
Operator: Manual, Pneumatic, Electric, etc
Application range: The check valve is generally used in the pipeline where the convection resistance requirement is not strict, that is, where the pressure loss is not considered. Such as high temperature and high pressure working media, toxic and harmful dangerous liquids, the closing parts are required to ensure long-term sealing and no leakage. In general, the conditions of use require reliable sealing performance. Such as power industry, petroleum refining, petrochemical, offshore oil, urban construction of water engineering, chemical industry and other fields of application.
◎ Design Standard: API 594,GB/T 12235
◎ Pressure Temperature Rate:ASME B16.34,GB/T12224
◎ Face to Face: API 6D,GB/T12221
◎ Flange Standard: ASME B16.5,GB/T9113
◎ Butt Weld Standard: ASME B16.25,GB/T12224
◎ Fire Safe: API 607
◎ Pressure Test: API6D,GB/T13927
The Comodity Cast Steel Gate Valve is mainly composed of valve body, valve cover, valve wedge, valve seat and valve stem. The two sealing surfaces are wedge-shaped gate valves. The purpose of the wedge is to improve the auxiliary seal load, to achieve both high medium pressure sealing and low medium pressure sealing. The valve body of the wedge valve is provided with a guide mechanism, which can prevent the gate from rotating when the gate is turned on or closed, ensuring that the seal of the gate on the valve seat is accurate accordingly. At the same time, the wedge valve does not rub with the valve seat before turning off, thereby reducing the wear of the cover and effectively extending the service life of the valve.
Special type control valves are customized valve products designed by our company for complex working conditions (such as high temperature, high pressure, strong corrosion, high precision, and low-temperature control, etc.). They possess the ability to precisely regulate flow and pressure, and can meet the stringent requirements in industrial processes.
The Cryogenic High-Performance Butterfly Valve adopts an offset valve stem and eccentric butterfly plate design. When opening and in the middle position, the valve seat and the butterfly plate do not contact each other, which reduces the friction on the valve seat while reducing the torque, and improves the durability of the valve. It is a high-performance regulating and cutting valve. The valve is designed to handle various media that are most difficult to handle in today's industrial environment, including liquid oxygen, liquid natural gas and other cryogenic liquids.