Cryogenic Ball Valve

Technical Summary

Nominal Size: ½” to 24”

Pressure Class: Class 150 to Class 2500

Temperature Range: -196°C to +200°C

Design Standards: API 6D, BS 6364, ASME B16.34

Face to Face: ASME B16.10

End Connections: Flanged / Butt Weld

Fire Safe: API 607 / API 6FA

Inspection and Testing: API 598, BS 6364

Construction and Materials

Body and Pressure Retaining Parts

• ASTM A351 CF8M
• ASTM A182 F316 / F316L
• ASTM A182 F51 (Duplex)
• ASTM A182 F53 (Super Duplex)

Internal Components

• Ball: ASTM A182 F316 / F316L / Duplex / Super Duplex
• Stem: ASTM A182 F316 / F316L
• Seat: Metal seat / PEEK for cryogenic sealing performance

Sealing System

• Packing: Graphite / Cryogenic low-temperature packing
• Gasket: Spiral wound gasket with graphite or PTFE filler

Functional Design

Cryogenic Ball Valve is designed for reliable shut-off and flow control in ultra-low temperature applications. The valve features an extended bonnet design that isolates the stem sealing area from cryogenic temperatures, preventing freezing and ensuring operational integrity.

The ball and seat arrangement provides tight shut-off even under extreme thermal contraction conditions. Material selection and thermal expansion compatibility are optimized to maintain sealing performance at temperatures as low as -196°C.

Material and Grade

Standard Materials

Component	Material	Grade	Typical Application
Body	Stainless Steel	ASTM A351 CF8M	Cryogenic LNG and industrial gas service
Body	Forged Stainless Steel	ASTM A182 F316 / F316L	Low temperature and high integrity applications
Body	Duplex Stainless Steel	ASTM A182 F51	High strength and corrosion resistance
Ball	Stainless Steel	ASTM A182 F316 / F316L	Flow control and sealing
Stem	Stainless Steel	ASTM A182 F316 / F316L	Low temperature toughness and corrosion resistance
Seat	Metal / PEEK	Low temperature compatible	Tight shut-off at cryogenic temperatures

Extended Materials (On Request)

• Super Duplex Stainless Steel (F53 / F55) for offshore LNG applications
• Inconel 625 for extreme low temperature and high pressure service
• Titanium Grade 2 / 5 for specialized cryogenic applications

Additional Information

Valve Type	Cryogenic Ball Valve
Operation	Manual / Electric / Pneumatic
Design Feature	Extended bonnet for thermal isolation
Leakage Control	Tight shut-off with cryogenic sealing design
Temperature Capability	Suitable for ultra-low temperature service down to -196°C
Service Media	LNG, liquid nitrogen, liquid oxygen, liquid hydrogen

End Connections

• Flanged as per ASME B16.5
• Butt weld as per ASME B16.25

Applications

• LNG industry: liquefaction, storage, and regasification systems
• Gas processing plants: handling of cryogenic gases and liquefied hydrocarbons
• Oil and gas industry: low temperature pipeline and storage applications
• Industrial gas sector: oxygen, nitrogen, and hydrogen handling systems
• Power generation: cryogenic fuel handling and gas supply systems
• Marine and offshore: LNG carriers and cryogenic transfer systems