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Flanged Trunnion Ball Valve
Material :Carbon Steel, Stainless Steel 304 or 316L
Size : 1/2″– 60″ (DN 15 – DN1500)
Connection : Welded、Flanged
100% tested and inspected
A JIANEN Flanged API 6D trunnion mounted ball valve features a robust forged body with precision-machined flanged connections, ensuring long-term reliability under demanding pressure and temperature conditions. The flanged design allows seamless integration into existing systems and supports routine inspection and maintenance. CE certification confirms compliance with essential safety requirements.
The full bore design minimizes pressure drop when open, while pressure-energized seats ensure tight, bi-directional sealing when closed. An automatic cavity pressure relief system protects against overpressure, and an optional API 607 fire-safe design provides secure isolation under fire conditions.
JIANEN flanged ball valves deliver reliable performance in safety-critical applications, from transmission pipelines to refinery and chemical processing units.
Name
Flanged Trunnion Ball Valve
Material
Body/Ball/Stem: Carbon Steel, Low-Temp Carbon Steel, Stainless Steel (e.g., 304/316)
Size
NPS 1/2″ – 60″ (DN 15 – 1500)
Seal
Primary Seal: Spring-loaded + Pressure-energized
Surface
Internal & external anti-corrosion coating; Flange face/weld bevel machined to standard
Typical Operating Pressure
Applicable Temperature Range
Standard: -29°C to +121°C
Way of Connection
Welded 、Flanged
Standards
API 6D, ASME B16.34, CE,etc.
Package
Body painted, ends protected with caps, packed in a wooden case
Seat Seal: Reinforced PTFE, Metal Seat (for high temp)
Secondary Seal: Fire-safe Metal Seal (optional)
Stem Seal: Multiple packing rings
ANSI class 150 - class 2500 (PN10-PN420)
Low-Temp: Down to -196°C
High-Temp: Up to +200°C or above (depends on seat material)
Welded vs. Flanged Ball Valves – Engineered Solutions for Every Application
Key Advantage:
JIANEN API 6D Ball Valves are available in multiple engineered configurations. This allows selection of the optimal sealing and structural solution for a wide range of operating conditions, installation environments, and maintenance requirements across diverse industries. All designs comply with API 6D and ASME B16.34 standards.
Design Comparison:
Welded Ball Valves
A fully welded body construction eliminates external leak paths, providing a permanent, maintenance-free sealing solution ideal for buried pipelines, offshore subsea installations, and other critical high-pressure services.
Flanged Ball Valves
Precision-machined flanges paired with high-performance gaskets ensure reliable leak-tight connections while permitting easy installation, disassembly for inspection, and component replacement in process plants and above-ground pipeline systems.
Common Robust Feature:
Both designs incorporate multiple-stage stem sealing systems to prevent fugitive emissions and ensure safe, environmentally compliant operation.
No matter the application challenge, JIANEN provides the engineered solution for long-term safety, reliability, and performance.