Low Temperature Ball Valves Description
Cryogenic ball valve is a valve specially designed for ultra-low temperature environment of -40℃ to -196℃. It realizes the opening and closing and flow control of the medium by rotating the ball. It is suitable for the delivery system of easily gasified low-temperature medium such as liquefied natural gas (LNG), liquid oxygen, liquid nitrogen, etc.
Core structure
Valve body and ball:
Valve body material: stainless steel (316L), forged steel (WCB) or alloy steel, cryogenically treated to enhance low-temperature toughness.
Ball design: floating ball (small diameter) or fixed ball (large diameter/high pressure), with hard alloy plated on the surface to improve wear resistance.
Sealing system:
Soft seal: polytetrafluoroethylene (PTFE) or reinforced graphite seal ring, achieving zero leakage at -196℃ (ANSI VI grade).
Hard seal: metal-to-metal seal (such as chrome-molybdenum steel + tungsten carbide), resistant to high pressure difference and particle erosion.
Pressure relief and anti-gasification design:
Spring preloaded valve seat: The spring force is used to keep the sealing surface in close contact, preventing the medium from gasifying and expanding and causing a sudden increase in the pressure in the valve cavity.
Valve cavity pressure relief hole: The ball is drilled to connect the valve cavity with the upstream pipeline to prevent the low-temperature medium from gasifying and causing safety hazards.
Low Temperature Ball Valves specification
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Application
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oil and gas
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Port Size
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DN10-DN2000
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Warranty
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24 months
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Place of Origin
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Henan, China
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Model Number
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WBV-18
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Power
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Electric,Pneumatic,Manual,Hydraulic
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Temperature of Media
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High Temperature, Low Temperature, Medium Temperature, Normal Temperature
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Brand Name
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GNEE
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Structure
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BALL
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Media
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gas,oil etc.
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Customized support
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OEM, ODM, OBM
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Body material
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WCB carbon steel, CF8/CF8m stainless steel or alloy steel
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Ball Material
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Stainless steel, alloy steel
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Stem Material
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Stainless steel
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Seat Material
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PTFE or metal seal with stellite, tungsten carbide
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End Connection
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Butt weld, socket weld
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Design Standard
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API 6D, API 608, API 607, ASME B16.34, ASME B16.25
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Certifications
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API 6D, API 607, API 598, ANSI/ASME B16.34, etc
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MOQ
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5 unit
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Low Temperature Ball Valves
Advantages
Ultra-low temperature adaptability:
The valve body and sealing materials have been specially treated to maintain stable performance at -196°C without the risk of brittle cracking.
High sealing reliability:
The double sealing structure (soft seal + hard seal) and spring preload design ensure zero leakage at extreme temperatures.
Corrosion resistance and high pressure resistance:
The forged steel valve body can withstand high pressure ≥PN10.0MPa, and the stainless steel material is resistant to corrosive media such as acid and alkali.
Low fluid resistance:
The full-diameter design reduces pressure drop and is suitable for large-flow low-temperature medium transportation.
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