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Cryogenic Ball Valve Manufacturer in India
Speciality Valve is a trusted Cryogenic Ball Valve Manufacturer in India, producing high-precision valves designed to perform safely and efficiently in extremely low-temperature environments. Our cryogenic ball valves ensure leak-tight performance, operator safety, and long-term reliability in applications involving liquefied gases such as LNG, liquid nitrogen, oxygen, hydrogen, and argon.
Function & Working
Cryogenic ball valves are used to isolate or control the flow of cryogenic fluids at temperatures as low as –196 °C. The ball, when rotated 90°, allows or restricts flow through its bore, providing full-bore passage when open and bubble-tight shut-off when closed. Each valve features an extended bonnet that keeps the stem seals above the frost line, preventing freezing and ensuring safe operation. Precision machining of the ball and seat ensures minimal torque and consistent sealing even under extreme thermal contraction.
Advantages
Reliable performance at cryogenic temperatures
Extended bonnet prevents frost accumulation and ensures operator safety
Bubble-tight shut-off for liquefied and gaseous service
Suitable for both manual and automated actuation
Long service life with minimal maintenance
Types Offered
Floating Cryogenic Ball Valve
Trunnion-Mounted Cryogenic Ball Valve
Top-Entry and Side-Entry Ball Valve
Manual, Pneumatic, and Electric Actuated Types
Industries Served
LNG and LPG Terminals
Industrial Gas Plants
Petrochemical and Refinery Facilities
Aerospace and Cryogenic Testing Systems
Medical Gas and Pharmaceutical Distribution
Hydrogen and Oxygen Storage Networks
Technical Specifications
Design Standards: BS 6364, ISO 28921, API 6D, ASME B16.34, API 598
Size Range: DN15 – DN1200 (½″ – 48″)
Pressure Ratings: Class 150 – 2500 / PN10 – PN450
Temperature Range: –196 °C to +120 °C
End Connections: Flanged (RF/RTJ), Butt Weld (BW), Socket Weld (SW), Threaded (NPT/BSP)
Operation: Lever, Gear, Pneumatic, or Electric Actuated
Material of Construction
| Component | Material Grades / Standards | Service / Use |
|---|---|---|
| Body / Bonnet | CF8 / CF8M (SS304 / SS316), F51 (Duplex 2205), F53 / F55 (Super Duplex), Inconel 625 / 825, Monel 400 / K500, Titanium Grade 2 / 5 | Cryogenic, seawater, and corrosive gas service |
| Ball | SS316 / SS316L, Duplex, Super Duplex, Inconel, Electroless Nickel Plated options | Precision sealing and corrosion resistance |
| Seat | PCTFE, RPTFE, TFM 1600, Metal-to-Metal (Stellite overlay) | Cryogenic and high-cycle service |
| Stem | SS316L, Duplex, 17-4 PH Hardened Steel | Strength and anti-galling performance |
| Gaskets / Seals | PTFE, Graphite, Low-Temperature Elastomers | Leak-proof sealing under temperature cycling |
| Extended Bonnet | Fabricated Stainless Steel to BS 6364 Design | Prevents frost bridging and ensures safety |
Testing and Certification
All cryogenic ball valves are tested and certified in accordance with international cryogenic standards:
Cryogenic proof test at –196 °C in liquid nitrogen
Helium leak test for micro-leakage detection
Hydrostatic and seat leak testing as per API 598 / ISO 5208
Fugitive emission testing (API 641 / ISO 15848-1)
EN 10204 3.1 / 3.2 material traceability certificates
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