1/2″-800LB Cryogenic Floating Ball Valve

1/2″-800LB Cryogenic Floating Ball Valve

TECHNICAL DATA SHEET

Product Name: 1/2-inch 800LB Stainless Steel Cryogenic Floating Ball Valve
Model/Specification: 1/2″-800LB-CRYO
Ventiltyp: Floating Ball Valve (Cryogenic Service)
Connection Type: Threaded (NPT) / Butt Weld (BW) / Socket Weld (SW) User specified

1. Basic Design Parameters

2. Technical Specifications

3. Material of Construction (Recommended – Stainless Steel for Cryogenic)

4. Main Dimensions & Connection Details

*Note: Dimensions are for 1/2″ Threaded End (NPT) connections. BW/SW dimensions may vary by manufacturer.*

4.1 End-to-End Dimensions (Threaded)

4.2 Extended Bonnet (Cryogenic Feature)

• Extension Length: Designed to keep packing box above frost line (typically 150mm – 250mm for 1/2″ valve, depending on service temperature [-196°C]).
• Drip Plate: Included to prevent ice formation on the body/bonnet joint.

4.3 Weld End Preparation (if BW – per ASME B16.25)

• Bevel Angle: 37.5°
• Root Face: 1.6 mm (1/16″) nominal
• Counterbore: To match pipe schedule (e.g., Sch. 80, Sch. 160) as specified.

5. Pressure-Temperature Rating (Class 800)

*Material Group: Stainless Steel (A182 F304/F316) – Values derived from ASME B16.34 and PTFE seat limits.*

*For cryogenic service (below -46°C), PCTFE seats maintain excellent sealing properties down to -240°C. *

6. Flow Characteristics (Full Bore – 1/2″)

7. Test Pressure (API 598 / BS 6364)

8. Features & Applications

• Key Features:
• Cryogenic Service Capability: Designed for temperatures as low as -196°C (-320°F), suitable for LNG and other liquefied gases.
• Extended Bonnet: Protects the stem seals and packing from the extreme cold, ensuring operability and preventing ice formation.
• PCTFE (KEL-F®) Seats: Provides reliable sealing at cryogenic temperatures with excellent dimensional stability.
• Cavity Pressure Relief: Self-relieving seat design prevents dangerous over-pressure in the ball cavity due to vaporization of trapped cryogenic liquid.
• Blow-out Proof Stem: Ensures stem retention under all pressure conditions.
• Anti-Static Device: Dissipates static charge generated by ball/seat friction, critical for flammable media like LNG.
• Fire-Safe Design: Optional API 607 certification ensures sealing integrity in case of fire.
• Forged Body: Provides superior strength and reliability at high pressures and low temperatures.
• Main Applications:
• LNG (Liquefied Natural Gas): Liquefaction, storage, transportation, and regasification plants.
• Air Separation Units (ASU): Handling LOX (Liquid Oxygen), LIN (Liquid Nitrogen), LAr (Liquid Argon).
• Petrochemical: Handling ethylene, methane, and other cryogenic hydrocarbons.
• Industrial Gas: Cryogenic storage tanks and transfer lines.

Disclaimer: The above data is prepared based on common standards for cryogenic floating ball valves. Specific dimensions, materials, and pressure ratings may vary by manufacturer. The final technical agreement shall prevail.

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