● 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 quality of forged steel parts is higher than that of cast steel parts, and they can withstand large impact forces. Their plasticity, toughness, and other mechanical properties are higher than those of cast steel parts. The diameter of forged steel stop valves is generally not more than DN80, and most of them are reduced-diameter designs. Compared with cast steel stop valves of the same diameter, the flow rate is slightly lower, but the pressure and temperature range they can withstand are higher than those of cast steel valves, and their sealing performance is much better than that of cast steel stop valves, and their service life is longer. Like other stop valves, they are subject to the restrictions of the flow direction of the medium. Forged steel stop valves can be divided into straight-through stop valves (type stop valves) and direct-flow stop valves (Y-type stop valves) according to installation positions.
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