High Quality Low Temperature Cryogenic Floating Ball Valve

Specification

High-Quality Construction: This side-entry floating ball valve features a robust steel and iron body and ball, ensuring durability and resistance to corrosion in low-temperature applications.
Customization Options: The product offers various customization options, including OEM, ODM, OBM, and software reengineering support, allowing customers to tailor the product to their specific needs.
Wide Range of Applications: Suitable for general applications, this valve is compatible with water media and can be used in a variety of industries, including those requiring low-temperature operations.
Easy Installation: With a manual power operation, this valve is simple to install and requires minimal maintenance, making it an ideal choice for customers seeking a hassle-free solution.

High-Quality Low-Temperature Cryogenic Metal Side-Entry Floating Ball Valve

I. Core Attributes: Professional-Grade Parameters for Cryogenic Scenarios

Model: Side-Entry Floating Ball Valve
Diameter and Pressure:

Diameter Range: DN50~DN250 (2″~10″), suitable for medium-small cryogenic pipeline systems.
Pressure Classes: Class 150~Class 300 (PN20~PN50), with a maximum pressure rating of 5.0MPa, compliant with ASME B16.34 standards.

Materials and Structure:

Body Material: Valve body and ball made of WCB cast steel or 304 stainless steel, tested for low-temperature impact at -196°C (Charpy impact energy ≥27J) with excellent resistance to cold brittleness. Extended bonnet (150~200mm longer) is standard for cryogenic applications to prevent packing from hardening and leaking at low temperatures.
Sealing System:
- Seat: PTFE soft seal (-100°C~150°C) with leakage rate ≤0.5cc/min; metal hard seal (Stellite alloy) for particle-containing media, meeting API 6D Class VI bubble-tight standards.
- Fire Safety Design: Complies with API 607 standards, equipped with graphite emergency sealing layer for automatic metal-to-metal sealing if soft seal fails.

Operation and Connections:

Actuation: Manual operation with handwheel locking device, operating torque ≤150N·m for easy operation in low-temperature environments.
End Connections: Flanged (RF face/RTJ ring joint), compliant with ASME B16.5; socket weld available for DN50~DN200.

Certifications and Customization:

Cryogenic Certifications: ATEX low-temperature explosion-proof certification (-196°C), DNV GL marine certification, suitable for LNG ships, cryogenic chemical plants, etc.
Customization Services: OEM/ODM options include nickel plating (25μm thickness), explosion-proof electric actuator integration (response time ≤3 seconds).

Product Overview

Manufacturing Processes: Precision Engineering for Cryogenic Environments

(1) Cryogenic Adaptation Technology

Deep Cryogenic Treatment: Valve body and ball undergo -196°C liquid nitrogen aging treatment (48-hour hold) to eliminate internal stress, refine grain size to ASTM Grade 7, and maintain elongation ≥18% at low temperatures.
Sealing Surface Machining: Five-axis linkage grinding machines ensure seat surface roughness Ra≤0.4μm, with laser interferometer inspection to guarantee sealing surface fit error ≤0.003mm at low temperatures.

(2) Structural Design Highlights

Side-Entry Structure: Removable side body design allows seal component maintenance without full valve disassembly, reducing maintenance time by over 30% in cryogenic conditions.
Symmetrical Flow Path: Bidirectional flow without directionality, eliminating the need to distinguish flow direction during installation, suitable for complex pipeline layouts.
Anti-Frost Dew Coating: Polyurethane thermal insulation coating (500μm thickness) with thermal conductivity ≤0.02W/(m·K) prevents external condensation and ensures operational safety.

(3) Full-Process Cryogenic Testing

Material Testing: Each batch of steel undergoes low-temperature impact testing (-196°C) and chemical analysis (C≤0.25%, Ni≥8%), with third-party reports (e.g., SGS).
Pressure Testing:
- Cryogenic Seal Test: 1.1x nominal pressure test at -100°C, no leakage under 30-minute hold;
- Vacuum Test: Valve body evacuated to 10⁻³Pa, pressure rise ≤0.1Pa over 24 hours to verify airtightness.

Valve Details

Product Description: A Reliable Choice for Cryogenic Industrial Scenarios

This low-temperature metal side-entry floating ball valve is specially designed for cryogenic environments such as liquefied natural gas (LNG), liquid nitrogen storage, and cryogenic chemicals, serving as a core component for cold-chain fluid control with excellent low-temperature resistance and maintenance convenience.

(1) LNG and Hydrogen Storage/Transport

LNG Pipeline System: In -162°C LNG transportation, 304 stainless steel body with metal bellows seal achieves leakage rate ≤1×10⁻⁹Pa·m³/s (helium mass spectrometry), certified to ISO 20519 cryogenic valve standards.
Liquid Hydrogen Refueling Stations: Adaptable to -253°C ultra-low temperatures, extended bonnet design prevents stem icing and jamming, with stable operating torque (80~120N·m) for quick opening/closing.

(2) Chemical and Food Cold-Chain

Cryogenic Chemical Reactors: In -80°C polymerization reaction pipelines, PTFE soft seal ensures zero leakage, while side-entry structure enables on-line seat replacement, reducing downtime to ≤4 hours.
Food-Grade Low-Temperature Systems: Internal food-grade epoxy coating (200μm thickness), FDA-certified, suitable for -40°C clean fluid control in frozen food production lines.

(3) Marine and Offshore Engineering

Marine Cryogenic Ballast Water Systems: DN150 model certified by LR classification society, body made of duplex steel (2205) with seawater corrosion rate ≤0.002mm/year, operating leak-free at -30°C for 5+ years.
Offshore LNG Terminals: Paired with pneumatic actuators for remote control (response time ≤2 seconds), meeting IMO IGF code requirements for emergency shutdown in cryogenic valves.

Application

Supply Chain and Services: End-to-End Support for Cryogenic Solutions

Delivery Capacity: Standard products shipped within 35 days; cryogenic customizations (e.g., special diameters, explosion-proof configurations) negotiable, monthly capacity 2,000 units.
After-Sales Service:
- Warranty: 1 year (extended to 18 months for cryogenic conditions), free low-temperature performance testing;
- Technical Support: 7×24-hour remote guidance, on-site cryogenic debugging available (e.g., dry ice pre-cooling tests).

TIANYU’s low-temperature metal side-entry floating ball valve delivers core advantages of “cryogenic resistance, easy maintenance, and high sealing,” providing professional fluid control solutions for global cryogenic industries. Whether in frigid pipeline networks or precision ultra-low-temperature laboratory equipment, we ensure system safety and efficiency through rigorous Technology standards and customized services.