● A single elastic valve seat sealing structure achieves dynamic sealing through system pressure, and is durable;
● It can maintain reliable sealing without the need to use additional sealing rings or metal components;
● It can operate a bidirectional leak-free seal;
● The lip-edge sealing design compensates for temperature and pressure changes during use;
● The double eccentric structure ensures no contact between the valve seat and the disc during opening and closing, eliminating wear at both the upper and lower ends of the valve seat during frequent opening, reducing the operating torque, and lowering the requirements for the operating machinery.
● There is a fly prevention step at the top of the shaft, which prevents the upper part of the shaft from moving out of the valve cover in case of an accident.
● Maintenance is convenient. Just remove the pressure plate to replace the valve seat, without the need to disassemble the disc and the shaft.
● It combines flow interruption and control, featuring excellent control characteristics; the flow characteristic curve is in a geometric ratio change; the adjustment range is wide; even when used for control, it can still achieve a tight seal;
Material: Carbon Steel, Stainless Steel, Alloy Steel Nominal Size: NPS 2"~64", DN 50~1600
Pressure Rate: Class 150~600, PN 10~100
Temperature Range: -46°C~+200°C
Operator: Manual, Pneumatic, Electric, etc..
Application range: Suitable for water supply and drainage and gas pipelines in food, medicine, chemical industry, petroleum, electric power, light textile, paper making, etc. to adjust the flow and intercept the medium.
◎ Design Standard: ASME B16.34、API 609、EN 593、
◎ Pressure Temperature Rate: ASME B16.34、EN12516-1、
◎ Face to Face: API 609、ISO 5752、EN558
◎ Flange Standard: ASME B16.5、ASME B16.47、EN 1092、GOST 33259、GB/T 9124
◎ Pressure Test: API 598、ISO 5208、EN 12266-1、GOST 9544
The valve disc of the Cryogenic Swing Check Valve adopts a cantilevered swing structure, combined with precisely machined valve seat sealing surfaces, to achieve rapid response and reliable sealing, effectively preventing the reverse flow of the medium. The overall design of the valve complies with international standards such as BS 6364 and ISO 28921, and is suitable for low-temperature conditions in air separation plants, liquefied natural gas storage and transportation, and the chemical industry.
The valve disc of the Cryogenic Lifting Check Valve adopts a vertical lifting structure and is equipped with a cobalt-based alloy sealing surface. It can achieve rapid response and reliable sealing when the medium pressure changes. The product complies with BS 6364 and API 6D standards and is suitable for the transportation systems of low-temperature media such as LNG and liquid oxygen. The working pressure can reach Class 2500 and meets the strict working conditions requirements in the petrochemical and air separation fields.
The Axial Flow Check Valve has a unique axial flow design, and its spool is aligned with the flow direction, significantly reducing the resistance loss when the fluid passes through. The spool is driven by spring or fluid pressure for quick opening and closing. When the fluid is flowing forward, the spool is pushed open and the fluid passes smoothly. When the fluid flows in reverse, the spool is quickly closed, effectively preventing backflow, and ensuring the stability and safety of the system operation.