This 2PCS Hastelloy C-276 cryogenic floating ball valve is engineered for ultra-low temperature liquefied gas transport from -46℃ to -196℃. All core wetted parts adopt Hastelloy C-276 alloy with cobalt base tungsten carbide overlay, delivering outstanding anti-corrosion capacity for hazardous flammable media like LNG. Equipped with extended bonnet and metal seat, it maintains tight zero-leak sealing under extreme cold. Multiple size options from 1/2" to 24" fit LNG plants, receiving stations and carriers, with complete customized material and dimension support.
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The 2PCS Hastelloy C-276 steel cryogenic floating ball valve is a professional industrial valve tailored for ultra-low temperature corrosive medium working conditions, covering working temperature ranges of -46°C, -101°C and -196°C. It is specially developed for liquefied natural gas, liquid nitrogen and other flammable, dangerous cryogenic liquefied media. Different from ordinary stainless steel cryogenic valves, its valve body, ball and valve seat all adopt Hastelloy C-276 high-performance nickel-based alloy, which can resist severe corrosion of acid, alkali and halogen medium carried by liquefied gas.
The extended bonnet structure is its standard cryogenic design: it can isolate the low-temperature medium from the top packing assembly, avoid the temperature loss of the filler, and prevent external water vapor from freezing and affecting the switching performance. The metal hard-seated floating ball structure can compensate for the shrinkage difference of metal materials under ultra-low temperature, ensuring permanent reliable sealing without leakage, which is the core safety guarantee for LNG storage and transportation systems. This valve is widely matched with LNG receiving stations, vaporization stations, liquefaction plants and LNG ship pipeline systems, and can work stably for a long time under harsh low-temperature and corrosive environments.
● Ultra-Low Temperature Cryogenic Design: Three temperature grades of -46°C, -101°C and -196°C are optional, with extended bonnet to avoid packing icing and ensure flexible valve switching under extreme cold.
● Hastelloy C-276 Full Wetted Parts: All medium contact components use Hastelloy C-276 alloy, coated with cobalt base tungsten carbide, strong resistance to acid, alkali and halogen corrosion, suitable for hazardous liquefied gas.
● Metal Hard Sealing Structure: Metal valve seat can offset low-temperature metal shrinkage, realize zero leakage sealing, solve the leakage risk of soft seal materials under ultra-low temperature embrittlement.
● High Safety for Flammable Media: Special low-temperature resistant VITON O-ring, Inconel X-750 anti-fatigue spring and fluorine-sprayed fasteners prevent medium leakage and ignition risk.
● Complete Size Coverage: Sizes from 1/2" to 24" are available, with different bonnet height matching three temperature levels, supporting pipeline matching of various LNG equipment.
| No | Part Name | Materials | |
| -46°C~-101°C~-196°C | |||
| 1 | Left Body | A352-LCB,LCC,LC3,A351-CF8,A351-CF8M | |
| 2 | Seat | PTFE,RPTFE,PEEK,PPL,POM,KARBATE | |
| NYLON,MOLON,DEVLON | |||
| 3 | Ball | A182-F304,F316 | |
| 4 | O-ring | VITON | |
| 5 | Gasket | Flexible graphite+304,flexible graphite+316,PTFE | |
| 6 | Bolt | A194-4,8,8M | |
| 7 | Nut | A320-L7,A193-B8,B8M | |
| 8 | Right body | A352-LCB,LCC,LC3,A351-CF8,CF8M | |
| 9 | Spring | ss304,316 | |
| 10 | Small ball | PTFE | |
| 11 | Thrust washer | A182-F6,F316,F316 | |
| 12 | Stem | Flexible graphite,PTFE | |
| 13 | Gasket | A182 F6,F304,F316 | |
| 14 | Packing | A352 LCB,A351 CF8 | |
| 15 | Gland | 1025,stainless steel | |
| 16 | Gland flange | A216 WCB | |
| 17 | Stop plate | 1025 | |
| 18 | Lever | 1035,stainless steel | |
| 19 | Screw | A352-LCB,LCC,LC3,A351-CF8,CF8M | |
| 20 | Screw | 1035,stainless steel | |
| 21 | Extended bonnet | A352-LCB,LCC,LC3,A351-CF8,CF8M, | |
| 22 | Screw | 1035,stainless steel | |
| 23 | Bushing | A182-F6,F304,F316 | |
| Size(in) | H | ||
| -46°C | -101°C | -196°C | |
| 1/2 | 90 | 110 | 130 |
| 3/4 | 100 | 110 | 140 |
| 1 | 100 | 120 | 150 |
| 1 1/2 | 110 | 130 | 160 |
| 2 | 110 | 130 | 170 |
| 3 | 120 | 150 | 190 |
| 4 | 130 | 160 | 200 |
| 6 | 140 | 170 | 220 |
| 8 | 140 | 170 | 220 |
| 10 | 150 | 180 | 240 |
| 12 | 150 | 180 | 240 |
| 14 | 160 | 190 | 250 |
| 16 | 160 | 190 | 250 |
| 18 | 160 | 190 | 250 |
| 20 | 170 | 200 | 260 |
| 24 | 170 | 200 | 260 |
| Valve body, side cover | Hastelloy C-276 |
| Sphere Ball | Hastelloy C-276 + cobalt base + tungsten carbide |
| Valve seat | Hastelloy C-276 + cobalt base + tungsten carbide; (Hastelloy G30 for ball valves) |
| Stem | XM-19 |
| Spring | Inconel X-750 |
| Fastener | B7+ fluorine spray |
| Middle flange sealing material | graphite + O-ring (fluorine rubber) |
Superior Low-Temperature Anti-Corrosion Performance: All wetted parts adopt Hastelloy C-276 nickel alloy, resisting chloride, acid and alkali corrosion carried by liquefied gas, far better than ordinary 304/316 stainless steel valves.
Zero Leakage Metal Sealing: Cobalt tungsten carbide hard alloy seat offsets low-temperature metal shrinkage, no embrittlement leakage risk under -196℃ ultra-low temperature, meets LNG pipeline safety standards.
Anti-Icing Extended Bonnet Design: Separates cryogenic medium from top packing, avoids packing hardening and icing failure, guarantees long-term stable switching.
High Safety Matching Hazardous Media: Inconel anti-fatigue spring, fluorine-spray bolts and VITON low-temp O-ring eliminate flammable medium leakage and ignition hazards.
Full Customization Support: Adjustable bonnet height, body material, pressure grade and connection end, supporting OEM & ODM for global LNG engineering projects.
This Hastelloy C-276 cryogenic floating ball valve is widely used in LNG liquefaction plants, LNG receiving terminals, cryogenic vaporization stations, liquid nitrogen storage tanks, LNG carrier ships and low-temperature chemical pipeline systems.
It solves two core pain points of traditional stainless steel cryogenic valves: medium corrosion and ultra-low temperature leakage, and is the standard matching control valve for all low-temperature flammable corrosive fluid transmission projects.
This valve is ideal for cryogenic applications, especially for handling liquefied gases such as LNG, in low-temperature environments.
It uses a metal seat, designed to maintain reliable sealing performance at extreme low temperatures.
Our 2PCS Hastelloy C-276 cryogenic floating ball valve adopts high-purity imported Hastelloy C-276 alloy raw material, all core parts are processed by precision CNC machine tools, and each valve passes strict low-temperature sealing test and pressure test before delivery. The metal hard seat technology effectively solves the leakage problem of traditional cryogenic valves under ultra-low temperature.
We provide full customized service including size, pressure grade, driving mode and packaging, with professional technical team to support LNG engineering project matching. Our global after-sales team offers timely technical guidance and fault solutions, bringing customers stable valve performance and low long-term maintenance cost.
