The swing-type valve disc design is combined with a low-inertia structure to ensure rapid closure and reduce water hammer effects, thereby enhancing system safety. The sealing surfaces of the valve seat and valve disc are treated with hardening or PTFE composite materials, which adapt to the ultra-low temperature contraction characteristics and maintain long-term sealing performance. The optimized flow path design reduces pressure loss, improves the efficiency of medium flow, and simultaneously reduces the risk of icing. The overall structure is compact, supporting horizontal or vertical installation, meeting the requirements of different pipeline configurations, and suitable for high-demand applications of one-way cutoff for deep-cold media.
◎ Material: Stainless Steel,Alloy Steel
◎ Nominal Size: NPS 1/2*~24*,DN15~600
◎ Nominal Pressure: Class 150~2500, PN10~420
◎ Applicable Temperature: -196℃~+150℃
◎ Operator: Manual, Pneumatic, Electric, etc...
◎ Application Range: LNG, LPG, LNG low temperature conditions and long-distance pipelines such as oil, gas, and natural gas.
The structure adopts a short pattern, the valve gate is light in weight, and the pipe support frame can be saved. Diversified Drive Modes: Electric, gearbox, hydraulic and pneumaticcan be selected at will. High performance sealing combination packing: The combined packing sealing system isadopted to greatly improve its sealing performance.
There are two main types of forged steel check valves: forged steel swing check valves and forged steel lift check valves. 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 also higher than those of cast steel parts.
The quality of forged steel parts is higher than that of cast steel parts, and they can withstand the impact of beatings. The plasticity, toughness, and other mechanical properties are higher than those of cast steel parts. The diameter of cast steel gate valves is generally not more than DN80, and most of them are reduced-diameter designs. Compared with cast steel gate 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 the sealing performance is much better than that of cast steel gate valves, and the service life is longer. The flow direction of the medium is not restricted like other gate valves.