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
バルブタイプ: 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.

保証:

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