Engineered specifically for extreme cold and high-pressure environments, the High Pressure Flanged 20GL Low Temperature GOST Gate Valve delivers exceptional structural integrity and reliable flow isolation.
Manufactured from premium 20GL low-temperature carbon steel, this valve provides outstanding impact toughness and crack resistance at sub-zero temperatures. Designed strictly to GOST (Russian National Standard) specifications, it features a robust high-pressure design and standard flanged connections, ensuring leak-tight sealing and seamless integration into critical Arctic pipelines, LNG facilities, and cryogenic processing systems.
Key Features & Benefits
• 20GL Low Temperature Steel Construction: Crafted from specialized 20GL low-temperature carbon steel, providing superior impact toughness and preventing brittle fracture in extreme cold environments down to -60°C.
• GOST Standard Compliance: Designed and manufactured strictly to GOST standards, ensuring perfect dimensional compatibility and reliable performance in Russian, CIS, and Arctic regional infrastructure.
• High Pressure & Flanged Design: Engineered to withstand high-pressure conditions, featuring robust DIN/GOST flanged connections for easy installation, secure sealing, and leak-proof performance in demanding pipelines.
• OS&Y Rising Stem Mechanism: Features an Outside Screw and Yoke design with a non-rotating rising stem, providing a clear visual indication of valve position and protecting stem threads from media exposure.
• Stellite Hard-Faced Trim: Seat rings and wedge seating surfaces are overlaid with Stellite 6 (Co-Cr-W alloy) to resist severe erosion, corrosion, and galling, ensuring long service life in cryogenic and aggressive media.
• Reliable Sealing Performance: Precision-machined sealing surfaces ensure zero leakage, maintaining system safety and efficiency in high-pressure, low-temperature applications.
Technical Specifications
Parameter | Specification |
Valve Type | Low Temperature Flanged Gate Valve |
Design Standard | GOST |
Body Material | Low Temperature Carbon Steel (20GL) |
End Connection | Flanged per GOST |
Pressure Rating | High Pressure (e.g., PN100, PN160, PN250) |
Size Range | DN50 - DN1200 |
Temperature Range | -60°C to +425°C |
Trim Material | Stainless Steel or Stellite Hard-Faced |
Operation | Manual Handwheel / Gear Operator |
Testing & Inspection | GOST Testing Standards |
Applications
This high-performance 20GL low-temperature gate valve is widely deployed in:
• Arctic & Cold Region Pipelines: Oil and gas transmission lines operating in extreme sub-zero climates requiring high impact toughness.
• LNG & Cryogenic Facilities: Liquefied natural gas processing, storage, and distribution systems.
• Petrochemical Plants: Low-temperature fluid isolation and distribution systems in critical processing lines.
• Industrial Refrigeration: Large-scale cooling systems and ammonia processing plants.
• Power Generation: Low-temperature utility piping networks in power plants.
FAQ
Q: What does 20GL mean in valve specifications?
A: 20GL is a specialized low-temperature carbon steel casting grade under Russian GOST standards. It is specifically engineered to maintain excellent impact toughness and prevent brittle fracture at sub-zero temperatures (typically down to -60°C), making it ideal for Arctic and cryogenic applications.
Q: Why choose GOST standard valves for cold regions?
A: GOST standards are specifically developed to address the harsh environmental conditions of Russia and CIS countries. GOST valves are rigorously tested for low-temperature performance, ensuring structural safety and reliability in extreme cold climates where standard valves might fail.
Q: What is the maximum working pressure for this valve?
A: This valve is designed for high-pressure applications, typically available in PN100, PN160, or PN250 ratings. The actual working pressure depends on the specific GOST rating and operating temperature, ensuring safe operation in demanding pipelines.
