Cryogenic Globe Valve

A Cryogenic Globe Valve is a type of valve specifically designed to operate in very low-temperature environments, typically below -150°C (-238°F), such as those used in the storage and transport of liquefied gases like LNG (Liquefied Natural Gas), Liquid Oxygen, Liquid Nitrogen, or Liquid Hydrogen.

Key Features of Cryogenic Globe Valves:

1. Material Compatibility:

   • Made from stainless steel or other materials that remain ductile at cryogenic temperatures.

   • Designed to prevent brittle failure due to extreme cold.

2. Extended Bonnet Design:

   • Includes an extended bonnet to keep the packing gland away from the cryogenic fluid, reducing the risk of frost damage and ensuring proper stem sealing.

   • This helps maintain valve operability and reduces ice formation on the stem.

3. Tight Shut-Off:

   • Designed for bubble-tight shutoff to prevent leakage of hazardous or expensive cryogenic gases.

4. Low Emission Packing:

   • Ensures minimal leakage through the stem, which is critical in cryogenic applications due to environmental and safety concerns.

5. Flow Control:

   • The globe valve design is ideal for precise throttling and flow control, making it suitable for regulating cryogenic media.

Applications:

• LNG plants and carriers

• Cryogenic storage tanks

• Aerospace fueling systems

• Industrial gas processing

• Medical gas systems (e.g., liquid oxygen)

Advantages:

• Precise flow regulation

• Suitable for low-temperature applications

• Extended service life when used properly

Disadvantages:

• Higher pressure drop compared to ball or gate valves

• More expensive than standard globe valves due to specialized materials and design

Would you like help selecting a specific model or comparing manufacturers?

Here’s a detailed sectional diagram of a cryogenic globe valve—showing its extended bonnet, stem, body, disc, seals, and other critical components.

Cryogenic Globe Valve with Datasheet– Details & Examples

1. Cryogenic Globe Valve (Type 01741)

This valve exemplifies a field-ready, specification-rich cryogenic globe valve:

• Size & Pressure: DN 80 (3″), PN 50 (max differential pressure 50 bar)

• Temperature Range: –255 °C to +120 °C

• Materials:

  • Body: Stainless Steel CF3M (1.4409)

  • Trim: Stainless Steel 316L (1.4404)

  • Seating: Soft seat made of PCTFE; sealing via graphite/PTFE packing

• Performance:

  • Tight shutoff: Leakage Class Rate A (EN 12266‑1)

  • Kvs = 104 m³/h, Cv = 121.3 gpm

• Design: Manual operation, quick‑opening characteristic, oxygen‑cleaned for safe use with hazardous gases
  
  

Datasheet:  provides a downloadable PDF with detailed specifications, dimensions, and materials

2. QASWA Cryogenic Globe Valve

Engineered for precision control at temperatures as low as –196 °C, this valve offers:

• Standards: Compliant with BS 6364, ASME B16.34, API 602

• Size: DN 15–300 (½″–12″)

• Pressure Rating: ANSI 150–900 / PN 10–160

• Materials: Stainless Steel (CF8M, CF3M), Monel, Inconel, Duplex

• Trim Options: Stellite®, PCTFE, metal‑to‑metal seating

• Features:

  • Extended bonnet for stem protection

  • Bubble‑tight sealing (API 598, Class IV or VI)

  • Versions cleaned for oxygen service
    
    

This design is ideal for LNG, liquid oxygen/nitrogen, and aerospace fueling systems.

3. QASWA Control Cryogenic Globe Valve

Robustly built for ultra-low temperatures, with:

• Materials: Forged body, vacuum‑insulated cover

• Sealing: Bellows option ensures absolute tightness; self‑lubricating bearings for smooth operation

• Standards: Meets BS 6364

• Specifications: NPS ½–24 (DN 15–600), Class 150–2500 / PN 10–420, temperature –196 °C to +150 °C
  
  

4. QASWA Cryogenic Globe Valve

Designed for high reliability with:

• Stem Design: Loose flange bolted bonnet to accommodate thermal expansion

• Materials: Bronze, stainless steel (optional bronze internals)

• Sizes & Ratings: DN 6–200; up to 50 bar; temperature down to –196 °C

• Notable Features: Anti‑blowout stem, revolving disc for wear distribution, oxygen‑cleaned options

• Media: Hydrogen, nitrogen, oxygen, argon, CO₂, natural gas, and more
  
  

5. QASWA API‑602 Cryogenic Globe Valve

Compact, reliable, and clean:

• Standards: API 602 forged steel globe valves adapted for cryogenic service

• Additions:

  • Extended bonnets for thermal protection

  • Solid CoCr alloy wedges (no galling)

  • Optional Kel‑F inserts for disc sealing

  • Oxygen-cleaned and degreased ends

• Sizes: NPS ¼–2 (DN 8–50)

• Pressure Class: ASME 150–2500
  
  

Summary Comparison Table

Where to Access Datasheets & Further Specs

• QASW 01741 Datasheet: Download via Ramén Valves site with full specs, drawings, and materials.

• Manufacturer Sites (QASWA ) typically offer datasheet downloads or spec details upon request.

• Supply Partners: In India ( India), valves are represented and can assist with inquiries, datasheets, or custom requests

What Next?

• Would you like help selecting a valve for a specific application (e.g., LNG tank, oxygen pipeline)?

• I can assist in comparing models for size, pressure, sealing, or temperature needs.

• Need assistance downloading or interpreting a datasheet? Let me know — I can guide you through it.

Happy to help!