Key Specifications / Features
This DBB trunnion ball valve is engineered to API 6D and BS 5351 standards, providing secure double isolation and bleed for high-pressure pipeline systems. Featuring a robust double ball design, it is manufactured with an ASTM A182 F55 super duplex stainless steel body and durable F304 trim to ensure exceptional corrosion resistance and long-term performance. With a large 28-inch size (DN700 / 700 mm) and a Class 300 LB pressure rating, the valve is equipped with RF flanged ends for reliable installation. Gear operation enables smooth, precise control under demanding operating conditions. As a leading DBB trunnion ball valve provider in China, we deliver high-quality products, strict testing, and customized solutions for global oil, gas, and industrial applications.
Valve Description:
181302036 Double Block and Bleed (DBB) Ball Valve, Trunnion Mounted Ball Valve
Design Standard: API 6D, BS 5351
Sizes: 28 Inch, DN700, 700 mm
Nominal Class: Class 300 LB
Test and Inspection: API 598, API 6D
Bore Type: Full Bore or Reduced Bore
Structure: Full Welded
Seat Insert: RPTFE, DEVLON, NYLON, PEEK
Face to Face: ASME B16.10
Operation: Gear
Body Material: ASTM A182 F55, ASTM A182 F316, Inconel 625, ASTM A182 F53, ASTM A182 F51, ASTM A182 F304, ASTM A350 LF2, ASTM A105N
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.
