Engineered for automated flow regulation in extreme cryogenic environments, the GOST Low Temperature Steel 20GL Flanged Pneumatic Globe Valve delivers uncompromising safety and precise throttling.
Manufactured from premium GOST 20GL low temperature cast steel, this valve offers exceptional impact resistance and structural integrity at temperatures as low as -60°C. Designed strictly to GOST (Russian National Standard) specifications, it features a robust extended bonnet construction that protects the pneumatic actuator and stem packing from cryogenic media, preventing freezing and seal failure. Equipped with standard GOST flanged connections, this 20GL pneumatic globe valve ensures reliable automated control, zero-leakage shut-off, and seamless integration into critical LNG, industrial gas, and cryogenic chemical piping systems.
Key Features & Benefits
· GOST 20GL Low Temperature Steel: Crafted from GOST 20GL cast steel, providing superior low-temperature impact toughness and preventing brittle fracture in cryogenic service down to -60°C.
· GOST Standard Compliance: Designed and manufactured strictly to GOST specifications, ensuring perfect dimensional compatibility and reliable performance in Russian, CIS, and regional cryogenic infrastructure.
· Automated Pneumatic Actuation: Integrated with a robust pneumatic actuator for precise, remote flow control, allowing seamless integration into plant automation systems and reducing manual labor in hazardous cryogenic areas.
· Extended Bonnet Design: Features an extended bonnet that isolates the pneumatic actuator and stem packing from cryogenic media, preventing freezing, condensation, and seal failure in extreme low-temperature environments.
· Precise Throttling & Shut-off: The plug-shaped disc moves linearly along the valve seat, with the port change directly proportional to the disc stroke, making it ideal for both precise flow regulation and reliable isolation of cryogenic media.
· 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 cryogenic media exposure.
Technical Specifications
Parameter | Specification |
Valve Type | Flanged Pneumatic Globe Valve |
Design Standard | GOST |
Body Material | Low Temperature Cast Steel (GOST 20GL) |
End Connection | Flanged per GOST |
Pressure Rating | PN16, PN25, PN40 |
Size Range | DN15 - DN300 |
Temperature Range | -60°C to +200°C |
Trim Material | 20GL / Stainless Steel / Stellite Hard-Faced |
Operation | Pneumatic Actuator (Double Acting / Spring Return) |
Testing & Inspection | GOST Testing Standards / API 598 |
Applications
This high-performance GOST 20GL pneumatic globe valve is widely deployed in:
· LNG & Industrial Gas: Automated flow control and isolation in liquefied natural gas, liquid oxygen, nitrogen, and argon storage and distribution systems.
· Cryogenic Chemical Processing: Handling cryogenic chemicals, refrigerants, and low-temperature fluids requiring precise automated throttling.
· Power Generation: Cryogenic fuel systems and auxiliary low-temperature utility lines requiring reliable automated control.
· Petrochemical Plants: Low-temperature separation units and cryogenic processing lines with remote control needs.
· Cold Storage & Refrigeration: Industrial refrigeration systems and cold chain logistics requiring automated flow regulation.
FAQ
Q: What is 20GL low temperature steel and why is it used?
A: 20GL is a GOST standard low temperature cast steel specifically designed for cryogenic service. It offers excellent impact resistance at temperatures as low as -60°C, preventing brittle fracture and ensuring structural safety in LNG, industrial gas, and cryogenic chemical applications.
Q: Why choose a pneumatic actuator for GOST low temperature globe valves?
A: Pneumatic actuators provide precise, remote automated control without the need for manual operation in hazardous cryogenic environments. They offer fast response times, high reliability, and seamless integration into plant automation systems, reducing operator exposure to extreme cold and improving process safety.
Q: What is the purpose of an extended bonnet in low temperature valves?
A: An extended bonnet isolates the pneumatic actuator and stem packing from cryogenic media, preventing freezing, condensation, and seal failure. It maintains the actuator and packing at a safe temperature above the cryogenic fluid, ensuring reliable operation and preventing leaks in extreme low-temperature environments.
