The Long-Stem Cryogenic Globe Valve SUS, CAST STEEL -196

The Long-Stem Cryogenic Globe Valve

Our DJ61 Series Long-Stem Cryogenic Globe Valves are engineered for the safe and efficient handling of liquefied gases down to -196°C (-321°F). The defining feature is our purposeful extended bonnet and stem design. This crucial Long-Stem architecture isolates the extreme cold of the process fluid from the valve packing and operating mechanism, preventing external icing, ensuring smooth operation, and guaranteeing reliable sealing in ultra-cold environments.

The series offers two primary sealing solutions to meet diverse operational demands:

Technical Features & Advantages

1. Superior Cryogenic Performance

   • All parts exposed to cryogenic media undergo strict deep-cryogenic treatment to stabilize the material structure and prevent thermal contraction.

   • Materials like ASTM A351 CF8/CF8M (304/316 SS) or Duplex Steel are used, validated by -196°C Charpy Impact Tests for guaranteed low-temperature toughness.

2. Reliable Long-Stem Design & Sealing

   • The extended stem design is the hallmark of this Long-Stem Cryogenic Globe Valve, creating a thermal barrier to protect the packing box.

   • Features an anti-blowout stem design and is packed with cryogenic-grade materials (e.g., flexible graphite) for operational safety and long-term sealing integrity.

3. Rigorous Quality Assurance

   • Every valve is 100% tested with Helium Mass Spectrometry Leak Detection for performance far exceeding standard hydrostatic/pneumatic tests.

   • Our comprehensive quality system holds ISO 9001 and CE certifications, with SIL compliance support available.

Technical Specifications

• Size Range: DN15 ~ DN200 (½" ~ 8")

• Pressure Rating: PN16 ~ PN100 (Class 150 ~ 600)

• End Connections: Butt-weld, Socket-weld, or Flanged

• Actuation: Manual, Pneumatic, or Electric Actuators

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Applications

Ideal for:

• LNG Terminals, Storage & Transportation

• Air Separation Plants (ASU)

• Industrial Gas Production & Storage

• Cryogenic Chemical Processes

• Refrigeration Systems & Cold Boxes

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Contact Us

For a reliable, high-performance valve solution for your cryogenic project, the GREAT MARINE expert team is ready to assist.

We provide full-range support from technical selection and custom design to global logistics. Request a detailed catalog, CAD drawings, or a quotation today.

QINGDAO GREAT MARINE MACHINERY CO., LTD.