Key Specifications / Features
This 12-inch (DN300) trunnion-mounted DBB ball valve is engineered to API 6D and BS 5351 standards for critical isolation in high-pressure pipeline systems. Featuring a robust Inconel 625 body with F304/F316 trim, it delivers exceptional corrosion resistance, strength, and long-term reliability in demanding environments. The fully welded construction enhances structural integrity, while RF flanged ends ensure secure installation and leak-tight performance. Rated at Class 300 LB, this valve provides safe double block and bleed functionality for oil, gas, and petrochemical applications. As a leading DBB ball valve supplier from China, we deliver durable, high-performance solutions for critical service.
Valve Description:
181302029 Trunnion Mounted Ball Valve, Double Block and Bleed (DBB) Ball Valve
Design Standard: API 6D, BS 5351
Sizes: 12 Inch, DN300, 300mm
Nominal Class: Class 300 LB, PN50
Test and Inspection: API 598, API 6D
Face to Face: ASME B16.10
Operation: Gear
Bore Type: Full Bore or Reduced Bore
Structure: Full Welded
Seat Insert: RPTFE, DEVLON, NYLON, PEEK
Body Material: Inconel 625, ASTM A182 F53, ASTM A182 F51, ASTM A182 F316, ASTM A182 F304, ASTM A350 LF2, ASTM A105N, F55
Trim Material: ASTM A182 F6A, F304, F316, F51, F53, F55, A105+ENP, LF2+ENP
End Connection: RF Flanged
Key Features: Double Block&Bleed(DBB), Anti-static Device, Fire Safe, Anti-Blowout Stem, Emergency sealant injection, Low Emission(Optional), DIB (Optional), full welded bonnet, Double Ball/Twin Ball
Product Range:
Body Material: Carbon Steel, Stainless Steel, Alloy Steel
Normal Diameter: 1/2 Inch - 48 Inch (DN15 - DN1200)
Pressure Range: Class 150 LB - 2500 LB
End Connection: RF, RTJ, BW, HUB
Working Temperature: -26°C - +150°C
Operation: Manual(lever, gear), Pneumatic Actuator, Motor Actuator
DESIGN FEATURES:
• Renewable solid wedges.
• Integral seats.
• High-Tensile bronze alloy stem.
• Stems are rotating/rising design.
• Each valve is shell and seat pressure tested per industry standard MSS SP-80.
