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HEROSE / REGO VALVES FOR LNG STORAGE TANK

Design and Functionality of Herose / Rego Valves in LNG Storage

LNG storage tanks require highly specialized valves to manage the extreme conditions inherent in liquefied natural gas (LNG) handling. Herose and Rego, renowned manufacturers in this niche, supply valves designed specifically for cryogenic applications. These valves must maintain tight sealing performance under temperatures as low as -162°C, ensuring both operational safety and efficiency.

Materials and Construction

The materials used in Herose and Rego valves are critical, as they must withstand thermal cycling without deformation or leakage. Typically, stainless steel alloys such as AISI 316L or duplex stainless steels are employed due to their excellent low-temperature toughness and corrosion resistance. Moreover, advanced sealing technologies—including PTFE or specialized elastomers compatible with cryogenic temperatures—are integrated to preserve the integrity of the system over prolonged service.

Valve Types and Their Applications

  • Ball Valves: Valued for their quick shutoff capability and minimal pressure drop, ball valves from these brands are frequently used in LNG tank isolation systems.
  • Pressure Relief Valves: Essential for protecting tanks against overpressure scenarios, these valves are calibrated to open at predetermined set points, venting excess vapor safely.
  • Check Valves: Designed to prevent reverse flow, check valves contribute to maintaining process stability within LNG transfer lines.

Operational Considerations for LNG Storage Tank Valves

Thermal Stress Management

Due to the significant temperature differentials between ambient and LNG conditions, valve components experience substantial thermal stresses. Both Herose and Rego valves incorporate design features such as bellows assemblies or flexible connections to accommodate thermal expansion while minimizing mechanical strain on critical parts.

Leak Tightness and Safety Standards

Adherence to international standards, including API 622 and ISO 21011, is mandatory when selecting valves for LNG applications. The hermetic sealing characteristics demonstrated by Herose / Rego valves meet these rigorous requirements, thereby mitigating leak risks that could lead to hazardous situations. Furthermore, routine maintenance protocols ensure ongoing compliance and functional reliability.

Integration with LNG Storage Systems

Compatibility and Customization

Given the diversity of LNG storage configurations, valve customization often becomes essential. Both brands provide modification options tailored to the specific demands of cryogenic systems, including flange types, actuation methods, and control integration. This flexibility supports seamless integration into existing infrastructures.

The Role of CRYO-TECH Innovations

While Herose and Rego valves themselves exhibit exemplary performance, incorporation of CRYO-TECH components, such as insulation jackets or enhanced actuator systems, further augments the overall efficiency and safety of LNG storage setups. Such synergistic implementations ensure that the valves operate optimally even in fluctuating environmental conditions.