Engineered for extreme thermal and pressure conditions, the A105 Integral Forged High Temperature High Pressure GOST Globe Valve delivers unmatched structural integrity and precise flow regulation.
Manufactured from a single piece of premium ASTM A105 carbon steel forging, this valve eliminates potential leak paths by removing body welds, ensuring superior strength and safety under severe thermal cycling. Designed strictly to GOST (Russian National Standard) specifications, it features a robust integral forged body and a plug-shaped disc that moves linearly along the valve seat centerline. Equipped with standard welded or flanged end connections, this HTHP globe valve ensures reliable throttling, zero-leakage shut-off, and seamless integration into critical power generation, refinery, and petrochemical piping systems.
Key Features & Benefits
· Integral Forged Construction: Crafted from a single solid piece of A105 carbon steel, eliminating body welds to reduce potential leak paths and significantly enhance structural strength and resistance to high-pressure surges.
· GOST Standard Compliance: Designed and manufactured strictly to GOST standards, ensuring perfect dimensional compatibility and reliable performance in Russian, CIS, and regional industrial infrastructure.
· HTHP Structural Integrity: Engineered with heavy-duty forged wall thickness and high-strength A105 material to withstand extreme thermal cycling and severe pressure surges without deformation or failure.
· 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 in high-pressure systems.
· 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 high-temperature media exposure.
· Stellite Hard-Faced Trim: Seat rings and disc seating surfaces are overlaid with Stellite 6 (Co-Cr-W alloy) to resist severe erosion, high-temperature corrosion, and galling in aggressive steam and oil flows.
Technical Specifications
Parameter | Specification |
Valve Type | Integral Forged Globe Valve |
Design Standard | GOST |
Body Material | Carbon Steel Forging (ASTM A105 / A105N) |
End Connection | Welded (BW/SW) or Flanged per GOST |
Pressure Rating | High Pressure (e.g., PN100, PN160, PN250) |
Size Range | 1/2" - 14" (DN15 - DN350) |
Temperature Range | -29°C to +425°C |
Trim Material | A105 / 13% Cr / Stainless Steel + Stellite Hard-Faced |
Operation | Manual Handwheel / Bevel Gear / Electric |
Testing & Inspection | GOST Testing Standards / API 598 |
Applications
This high-performance A105 integral forged GOST globe valve is widely deployed in:
· Power Generation: Main steam, reheat steam, and high-pressure feedwater lines in thermal and nuclear power plants.
· Oil Refineries: High-temperature crude oil, hot product pipelines, and coker units requiring precise throttling.
· Petrochemical Plants: High-pressure steam and hot oil processing lines in critical cracking and processing units.
· Industrial Boilers: High-pressure steam generation headers and distribution systems.
· Heavy Industry: Any high-temperature, high-pressure piping systems requiring forged structural integrity and GOST compliance.
FAQ
Q: What is the advantage of an integral forged A105 globe valve?
A: An integral forged valve is manufactured from a single solid piece of A105 carbon steel, eliminating the need to weld the valve body together. This removes potential leak paths, increases structural strength, and provides superior resistance to high pressure, thermal cycling, and mechanical stress compared to cast or welded body valves.
Q: Why choose GOST standard for high temperature high pressure globe valves?
A: GOST standards are specifically developed to address the harsh environmental conditions of Russia and CIS countries. GOST valves are rigorously tested for high-temperature and high-pressure performance, ensuring structural safety and reliability in extreme industrial climates where standard valves might fail.
Q: What is the maximum temperature range for an A105 forged globe valve?
A: ASTM A105 forged carbon steel globe valves can typically handle temperatures from -29°C up to +425°C. For continuous high-temperature service above 425°C, materials such as WC6, WC9, or stainless steel (F304H/F316H) are recommended to maintain structural integrity and creep resistance.
