The extended stem bellows gate valve adopts a bellows sealing structure, effectively preventing medium leakage.
○ Nominal diameter: DN15 – DN300mm
○ Nominal pressure: PN16 – PN64 (corresponding to Class 150 – Class 300)
○ Applicable medium: steam, hot water, heat transfer oil, corrosive or toxic liquid/gas
○ Operating temperature: –40°C to +450°C (up to 540°C for high-temperature models)
○ Connection method: flange connection
○ Valve body material: WCB, stainless steel 304, 316L
○ Bellows material: stainless steel, special steel, alloy steel
○ Sealing form: Dual sealing with metal bellows and graphite packing
○ Valve stem structure: Overall extended valve stem, with length customizable
○ Operating mode: handwheel, electric, pneumatic
○ Design standards: API 600 / API 602 / BS 1414 / ASME B16.34
○ Test standard: API 598 or ISO 5208 (shell and seal test)
○ The extended valve stem design is suitable for special installation environments such as underground or deep trenches.
○ The bellows sealing structure effectively prevents medium leakage, ensuring zero leakage.
○ The gate plate operates smoothly with minimal flow resistance, making it suitable for fully open or fully closed conditions.
○ The valve body material is corrosion-resistant and can adapt to various acid-base and high-temperature media.
○ Flexible operation and long lifespan, with an extended rod that has undergone strengthening treatment for resistance to torsion and bending.
○ The cutoff position for ground operation in buried steam or hot water pipe networks.
○ Control points for corrosive medium conveying systems within underground pipe trenches in chemical plants.
○ Maintenance and isolation of key parts of buried main steam pipelines in power plants.
○ Switching of high-temperature water or steam pipelines in valve wells of municipal heating systems.
○ Situations where remote manual operation is required for underground process pipelines in oil storage and transportation stations.
The bellows globe valve for natural gas utilizes a metal bellows sealing structure to prevent external leakage, making it suitable for gas pipeline systems.
The Y-shaped bellows globe valve adopts a straight-through and direct-flow structure. This structure features low fluid resistance
The high-temperature steam bellows globe valve utilizes a fully metal bellows seal, capable of withstanding temperatures up to 600℃, with zero external leakage.