High-Performance Cryogenic Gate Valve for Extreme Cold Gas Systems
Product Overview
Cryogenic gate valves manufactured by Vcore are specially engineered for extreme low-temperature applications, ensuring reliable performance down to -196°C. These valves adopt an extended bonnet design to protect the stem packing from the cold medium, maintaining sealing integrity and operational safety. The gate disc is precision-machined to guarantee tight shut-off under both vacuum and cryogenic conditions.
Key Features
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Operating temp down to -196°C
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Extended bonnet prevents stem freezing
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Stainless steel and duplex steel body options
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Soft and metal-to-metal sealing types
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Conforms to API, ASME, GB standards
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Available in sizes DN15–DN600
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Optional electric, pneumatic, or gear actuator
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Factory tested and third-party inspected
Technical Parameters
| Item | Description |
|---|---|
| Nominal Diameter | DN15 – DN600 |
| Nominal Pressure | PN16 / PN25 / PN40 / PN63 / 150LB / 300LB |
| Working Temperature | -196°C to +80°C |
| Connection Type | Flanged (RF/RTJ), Welded (BW), Threaded (optional) |
| Body Material | Stainless Steel (304/316/316L), Duplex Steel |
| Disc Material | Stainless Steel / Overlay Hardfacing |
| Stem Material | 304 / 316 / 316L |
| Bonnet Design | Extended Bonnet with Cold Insulation Protection |
| Sealing Type | PTFE, PCTFE, Graphite, Metal-to-Metal |
| Operation | Manual / Gear / Pneumatic / Electric |
| Test Standard | API 598 / ISO 5208 / GB/T13927 |
Main Dimensions & Weight (mm/kg)
| Nominal Diameter (DN) | Pressure (PN) | L (Face-to-Face) | H (Open) | D (Flange Dia) | D₁ (Bolt Circle) | D₂ (Flange Hole Dia) | b (Wall Thickness) | n-Φd (Bolt Hole) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 25 | PN25 | 160 | 320 | 115 | 85 | 65 | 14 | 4-Φ14 | 7.5 |
| 40 | PN25 | 200 | 360 | 150 | 110 | 84 | 16 | 4-Φ18 | 10 |
| 50 | PN25 | 230 | 420 | 165 | 125 | 99 | 18 | 4-Φ18 | 15 |
| 80 | PN25 | 310 | 510 | 200 | 160 | 133 | 20 | 8-Φ18 | 25 |
| 100 | PN25 | 350 | 580 | 220 | 180 | 156 | 22 | 8-Φ18 | 35 |
| 150 | PN25 | 480 | 720 | 285 | 240 | 211 | 26 | 8-Φ23 | 58 |
| 200 | PN25 | 600 | 880 | 340 | 295 | 266 | 30 | 12-Φ23 | 95 |
| 250 | PN25 | 730 | 1020 | 395 | 350 | 319 | 32 | 12-Φ25 | 135 |
| 300 | PN25 | 850 | 1140 | 445 | 400 | 370 | 36 | 12-Φ25 | 190 |
Functions and Benefits
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Cryogenic Service Ready: Specifically designed for -196°C environments, ideal for LNG, liquid oxygen, nitrogen, and hydrogen.
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Extended Bonnet Design: Prevents cold transfer to the stem packing to ensure reliable long-term operation.
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Tight Shut-Off: Metal-to-metal or soft seat sealing for both vacuum and pressure systems.
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Corrosion-Resistant Materials: Fully stainless steel body options to withstand liquefied gas corrosion.
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Versatile Operation: Optional actuation modes for remote or automated control.
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Customizable Build: Stem extension length and flange type tailored to match cryogenic system layout.
Applications
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LNG Transportation & Storage Terminals
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Air Separation Units (ASU)
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Petrochemical & Refining Plants
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Liquid Nitrogen & Liquid Oxygen Systems
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Cryogenic Laboratories
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Industrial Gas Supply Skids