The high-temperature and high-pressure self-sealing bellows gate valve adopts a dual sealing design featuring a self-tight sealing structure and a metal bellows
○ Structural form: straight-through type
○ Connection method: flange connection
○ Nominal diameter: DN15-DN50
○ Pressure rating: PN16-PN160
○ Valve body material: forged steel (A105, F22, F304, F316, F316L, etc.)
○ Bellows material: 304, 316L, Inconel 625, Hastelloy C-276
○ Valve seat sealing surface: overlay welding of Stellite alloy or body metal sealing
○ Operating temperature: -196°C to +600°C
○ Applicable medium: steam, high-temperature oil, toxic, flammable, explosive, and highly corrosive mediums
○ Leakage level: zero leakage, zero external leakage
○ Drive mode: handwheel, gear operation, pneumatic, electric
○ Design standards: API 602, BS 1873, ASME B16.34, GB/T 12224
○ Inspection and testing standards: API 598, ISO 5208
○ Design standard: ASME B16.34
○ Flange center-to-center distance: ASME B16.10
○ Flange end: ASME B16.5
○ Combining the advantages of pressure self-sealing valves and bellows valves, it maintains stable performance even under high temperature and high pressure conditions.
○ The higher the medium pressure, the greater the upward thrust on the middle part, and the better the sealing effect of the middle part.
The connection between the valve body and the valve cover adopts a pressure self-sealing structure, utilizing a combination of a wedge-shaped sealing ring and a four-split ring. This design allows the sealing ring to deform under high pressure, ensuring reliable sealing. The higher the pressure, the more reliable the sealing becomes.
○ Reliable cutoff device for main steam pipeline of power station under high temperature and high pressure conditions
○ Key isolation valve for high-temperature medium pipeline in petrochemical hydrocracking unit near hydrogen
○ High-safety valves with zero leakage required for the high-temperature water system of the secondary loop in nuclear power plants
○ Main shut-off control point for high-temperature and high-pressure transmission pipeline of coal chemical synthesis gas
○ Application of self-sealing gate valves in the feedwater and reheat steam systems of supercritical boilers
The extended stem bellows globe valve features an extended valve stem design, facilitating installation and operation in buried or elevated positions.
The extended stem bellows gate valve adopts a bellows sealing structure, effectively preventing medium leakage.
The high-temperature and high-pressure self-sealing bellows gate valve adopts a dual sealing design featuring a self-tight sealing structure and a metal bellows