Cryogenic Ball Valve

Cryogenic Side Entry Ball valve

Cryogenic side-entry (alternatively known as split-body) ball valves are expertly crafted for applications requiring extreme low temperatures and cryogenic conditions. They feature an integral bonnet extension that diverts cryogenic liquids, causing them to boil and convert to gas, thereby minimizing energy loss and safeguarding the valve from malfunction. This design ensures minimal thermal deformation of internal components, maintaining peak performance for critical LNG field applications that demand tight shut-off.
ACEV offers cryogenic floating ball valves in sizes ranging from 1/4" to 12" (DN8 to DN300), capable of securing pressures up to 42MPa and operating within temperatures of -196°C to +120°C. These valves are crafted from stainless steel for durability.
Our cryogenic trunnion ball valves boast a larger flow diameter (2" - 48") compared to similar floating ball valves. The actuated versions offer swift opening and closing times, ideal for tank applications, cryogenic pumps, pipelines, and low-pressure trailers.
ACEV's design flexibility accommodates a variety of construction materials and types, allowing for installation in any flow configuration and orientation.


Cryogenic Top Entry Ball valve
ACEV's Cryogenic Top-entry Ball Valves are tailored for extremely low temperatures and cryogenic applications, where inline disassembly is essential for trim inspection and maintenance. Featuring an integral bonnet extension, ACEV Flow Controls cleverly prevent cryogenic liquids from reaching the stem packing by facilitating their evaporation into gas. This design minimizes energy loss through the extension and safeguards the valve against malfunction. The valve's robust structure ensures minimal thermal deformation of internal components due to temperature fluctuations, guaranteeing top-notch performance and tight shut-off in the most demanding LNG applications.


Cryogenic Extended Bonnet Ball valve
Cryogenic valves are invariably equipped with an extended bonnet, or stem, due to several crucial reasons:
1.Temperature Protection for Stuffing Box: The stuffing box, pivotal in cryogenic and other valve operations, is shielded from low-temperature damage by the extended bonnet. As temperatures plummet, packing materials lose elasticity and their leakage prevention capabilities. Consequently, mediums freeze in the gap between the packing and stem, hindering stem movement and causing wear. Ultimately, severe leakage occurs. Hence, an extended stem ensures the packing remains sufficiently warm, ideally above 8°C.
2.Cold Energy Preservation: The extended bonnet structure facilitates wrapping the valve with special materials, thereby preventing the loss of cold energy.
3.Accessibility and Maintenance: Valves and pipes are often installed within a "cold box," yet the extended stem's "long neck" extends beyond its walls. This design allows for swift disassembly or replacement of valve components through the bonnet, enhancing ease of maintenance.


Specifications:
Dimensions & Ratings:
·Size Range: 1/4" to 48" (DN50 to DN1200)
·Pressure Ratings: ASME CLASS 150 to 2500 (PN16 to PN420)
·Temperature Range: -196°C to 120°C (-312°F to 248°F)

Construction Highlights:
·Cast or Forged, Side or Top Entry
·Trunnion or Floating Designs
·Seat Options: DBB (Self-Relieving) & DIB2 (Double Piston Effect)
·Seat Configurations: Fluid Trap Avoidance
·Soft or Metal Seating with Ball & Seat Hardfacing
·End Connections: RF, RTJ, BW
·Bore Types: Full or Reduced
·Features: Blowout-Proof Stem, Anti-Static, Fire-Safe, Secondary Graphite Seals, Lip Seals, Low Emission Packing, Extended Bonnet for Cryogenic Use, Forged Bolted Body, Lip-Seal + Graphite Fire-Safe Seals, Double Block Bleed

Operation:
·Manual: Wrench or Gear with Padlock
·Actuated: Pneumatic, Hydraulic, Electric

Materials:
·Monel, Inconel, Hastelloy, Incoloy, Duplex & Super Duplex, Low Temp Carbon Steel, Low Alloy Steel, Stainless Steel, Titanium, etc.

Compliance & Standards:
·Design: API 6D, ASME B16.34, BS 6364, MESC 77/200, ISO 28921
·Flanges: ASME B16.5
·Butt Welds: ASME B16.25
·Face-to-Face: ASME B16.10, EN558, JIS B2002, MSS SP72
·Pressure-Temp: ASME B16.34
·Mounting Pad: ISO 5211
·Testing: API 598, API 6D, EN12266, MSS SP82, ISO 5208
·Fugitive Emission: ISO 15848, API 624, API 641
·Fire-Safe: API 607, API 6FA, ISO10497
·NACE MR 0175/ISO 15156-1 Compliance (Non-Exposed Bolting)

Optional Features:
·Extended Bonnet (Various Lengths)
·Live-Loaded Encapsulated Seats for Bidirectional Sealing
·Fully Grounded Shaft & Ball
·Oxygen Cleaning for Liquid Oxygen Service