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Cryogenic Trunnion Mounted Ball Valve for -196°C Service (DN50–DN1400, ASME Class 150–2500) | DELCO
DELCO Cryogenic Trunnion Mounted Ball Valve is designed for -196°C low-temperature media isolation in LNG and other cryogenic process systems. The extended bonnet construction helps keep the packing area away from extreme cold, improving sealing reliability during thermal cycling and reducing ice formation around the stem. It is available from DN50 to DN1400 with ASME Class 150–2500 pressure rating, and can be supplied with end connections to match GB/ANSI/DIN/JIS project requirements.
size Range:DN50-DN1400 ASME ClaSS:ASME 150~2500LB
API Standard:API 2000~15000
Connection Standard: GB / ANSlDIN /JIS
Features
Cryogenic design focuses on sealing stability and stem-area protection at -196°C, supporting safer isolation in LNG-class low-temperature systems.
✅Extended Bonnet for Packing Protection: Keeps packing and stem sealing area above the cold zone to improve long-term tightness under cryogenic service.
✅Material & Toughness Selection for Low Temperature: Configurations can be supplied with materials commonly chosen for cryogenic impact toughness and thermal contraction control.
✅Thermal Cycling Reliability Concept: Designed for repeated cool-down/warm-up cycles, helping reduce leakage risk caused by contraction and stress change.
✅Trunnion Mounted Stability at Large DN: Fixed-ball support improves mechanical stability and helps manage operating torque on large sizes.
✅Wide Range + Multi-Standard Connections: DN50–DN1400, ASME Class 150–2500; end connections can align with GB / ANSI / DIN / JIS.
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