The Cryogenic Ball Valve, as an important on/off component in the cryogenic pipeline system, is an important part of the petrochemical industry, air separation, and natural gas industry. The structure of Top-Entry Ball Valve can realize online maintenance, and is suitable for low-temperature liquid or gas media, such as liquefied natural gas (LNG), liquefied petroleum gas (LPG), liquid hydrogen, liquid oxygen, ethylene and other conditions. Compared with the Side-Entry ball valve under the same conditions, Top-Entry Ball Valve is more convenient to maintain with a wider scope of application, and is more common.
Cryogenic Ball Valves are manufactured for extremely low temperature and cryogenic applications where in-line disassembly is required for trim inspection and maintenance.Valves are designed with an integral bonnet extension which prevents cryogenic liquids from reaching the stem packing by enabling the liquids to boil and convert to gas. This minimizes the energy loss along the extension and protects the valve from malfunctioning. The structural integrity of the valve reduces any thermal deformation of internal components caused by temperature variance to a minimum, ensuring the highest level of performance for tight shut-off in critical LNG fields.
Top Entry Ball Valves for cryogenic service are engineered, high-performance valves, that leverage CNC machining equipment, as well as other specialty equipment, and dust-free assembly areas to ensure a consistent and high-quality product.
Size：NPS1/2"~56"
Temperature： -196°C~550°C
Pressure：Class 150~Class 2,500
Materials：Carbon Steel, Stainless Steel, Duplex, Inconel, Monel, Bronze, Titanium Alloy
Standard：AP16DBS 5351ASME B1634SO17292
Face to Face： ASME B16.10API6D
End Connection：ASME B16.5ASME B1647,ASME B1625ASME B16.11
Test Standard： ISO 5208,API6DAPI598
Operators：Manual, Worm Gear, Electric Actuator, Pneumatic Actuator
Valves for natural gas liquefaction plants and receiving terminals as well as cargo systems to LNG requires safe and effi cient service. special extended bonnet valves off er safe and effi cient service with extended bonnets for suffi cient gas column length, keeping the stem seal packings exposed only to vapor and not the cold liquid to ensure functional integrity.
Feature:
1. The structure of Top-Entry Ball Valve enables online valve maintenance.
2. Extended bonnet design.
3.Design of live-loaded seal structure of valve stem.
4.Special design of valve seat assembly, reliable sealing, detachable valve seat structure.
5.Valve cavity overpressure relief design.
6.Stem anti-settling design.
7.The extended bonnet has a drip tray design, which can effectively prevent condensate from flowing into the insulation layer.
8.Fire-resistant, anti-static, anti-stem ejection function.
Testing cryogenic top-entry ball valves
Product application
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