Build Branding Xintai in The World
173540
173540
Category
Low Temperature Gate Valve
Main Material：The Mainstream Valve Body Is Made Of Low-temperature Steel (A352 LF2, 16MnDR, 09MnNiDR)
Nominal Diameter：DN25 - DN600
Nominal Pressure：PN16 - PN64
Temperature Range：- 40℃ - -196℃
- Strong low-temperature resistance to brittle fracture, key components such as valve body and gate plate are made of low-temperature tough materials, which undergo cryogenic treatment (-196 ℃ freezing aging) to eliminate internal stress and avoid brittle fracture at low temperatures, in accordance with GB/T 24925 or API 600 low-temperature valve standards.
- The sealing is reliable and leak proof. The valve seat adopts an "elastic compensation" structure to counteract material shrinkage at low temperatures. The flange sealing surface is matched with a low-temperature special gasket (metal winding gasket+flexible graphite), and the leakage rate can be controlled within ≤ 1 × 10 ⁻⁶ Pa · m ³/s, meeting the safety requirements of volatile media such as LNG.
- Flexible and unobstructed operation, low-temperature lubricating grease (-196 ℃ non solidifying) is used to connect the valve stem and gate, and low-temperature wear-resistant materials (such as PTFE filling) are selected for the guide sleeve to prevent component jamming at low temperatures, ensuring smooth opening and closing and stable operating torque.
- The safety design is comprehensive, and the valve body is equipped with a low temperature discharge port, which can discharge the residual low temperature medium in the valve cavity to prevent the Pressure from rising abruptly when thawing; Some models have anti-static and fire-resistant structures, suitable for flammable and explosive low-temperature scenarios such as LNG receiving stations, air separation equipment, and low-temperature storage tanks.
