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GKV930D Cryogenic Butterfly Valve Top Mounted is specially designed for safe and reliable operation in extreme low-temperature applications. Featuring a top-mounted access panel, the valve allows full in-field maintenance without removing the valve from the pipeline. Configurations with metal or PTFE seats, offering tight shut-off, low torque operation, and long service life in LNG, LPG, ammonia, and other cryogenic processes.
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Top Access Panel Cryogenic Butterfly Valve – Easy In-Line Maintenance & Reliable Cryogenic Performance
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Size Range 2” – 24” (DN50 – DN600), larger sizes up to 72” available on request |
Body & Bonnet Material Carbon Steel, Stainless Steel, Duplex/Super Duplex, Titanium, High Nickel Alloys |
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Temperature Range -196°C to +230°C, higher temperatures on request |
Shaft / Stem Material One-piece through shaft (BS6364 para 4.12), 17-4PH or 316 Stainless Steel for maximum rigidity |
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Pressure Rating ASME Class 150 – 2500 / EN 1092 PN10 – PN400; shut-off pressure up to 100 bar |
Seats & Seals Torque-energized, self-compensating laminated or hybrid metal/PTFE seals; Class IV–VI, API 598 zero leakage on request |
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Packing & Gland Low emission certified gland arrangement; PTFE or Graphite packing |
Disc / Trim Material Stainless Steel or Duplex with Hard-Faced Disc; Anti-Cavitation and Baffle Trim Options |
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Actuation Options Pneumatic, Electric, Hydraulic, Electro-Hydraulic, or Manual |
End Connections Wafer, Lugged, Double Flanged, or Butt Weld End |
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Body Configurations Standard and Extended Cryogenic Bonnet Designs; Top Access Panel allows full in-line maintenance without pipeline removal |
Leakage Class ANSI/FCI 70-2 Class IV–VI, API 598 Zero Leakage on request |
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Design Features Top-mounted access panel for easy servicing; quarter-turn operation; torque-seated design ensures consistent sealing; no internal bolting to loosen under vibration |
Applications Cryogenic service for LNG, LPG, ammonia, methanol, vent gas, flash gas recovery, and hydrocarbon chemical processing |
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Safety Features Anti-blowout shaft (Class 300+), low emission packing, top access panel reduces downtime and maintenance risks |
Optional Enhancements Anti-cavitation and low-noise trims, hard-facing and special alloys, custom face-to-face dimensions |

The GKV930D Top Access Cryogenic Butterfly Valve (similat to severn’s
cryogenic valve 8000 offers reliable performance in extreme low- temperature
applications with full in-line maintenance via the top-mounted access panel.
Valve Design: One-piece through shaft for strength and long-lasting sealing.
Configurations & Size: Wafer, Lugged, Double Flanged, Butt Weld End; 2”–24”
(DN50–DN600), larger sizes on request.
Pressure & Temperature: ASME Class 150–2500 / PN10–PN400; –196°C to +230°C.
Seats & Seals: Metal or PTFE seats, torque-energized, self-compensating;
Class IV–VI leakage.
Materials: Carbon steel, stainless steel, duplex/super duplex, titanium, high-nickel alloys.
Trim Options: Hard-faced discs, anti-cavitation/baffle trims for reduced noise and wear.
Actuation & Operation: Pneumatic, electric, hydraulic, electro-hydraulic,
or manual; quarter-turn operation for control or shut-off.

Similar to Severn’s Cryogenic Butterfly Valve 8000.
Top Access Panel: Full in-line maintenance without disassembly; reduces downtime and maintenance costs.
One-piece through shaft: Maximizes rigidity, minimizes wear, and ensures long-term sealing performance.
Cryogenic ready: Operates reliably down to –196°C, suitable for LNG, LPG, ammonia, methanol, and other low-temperature applications.
Flexible seat options: Metal or PTFE seats, torque-seated and self-compensating for wear and temperature changes.
Anti-cavitation & noise reduction: Optional trims and baffles for reduced cavitation, vibration, and noise.
Explosion-proof and low emission: Low emission gland arrangements, anti-blowout shaft standard for Class 300 and above.
Wide compatibility: Supports wafer, lugged, double flanged, and butt weld end connections; standard or custom face-to-face dimensions.
Durable materials: Carbon steel, stainless steel, duplex, titanium, and high-nickel alloys with hard-facing coatings available.