Key Specifications / Features
This 16-inch trunnion-mounted double block and bleed (DBB) ball valve is manufactured to BS 5351 standards, providing secure isolation and dependable performance in critical pipeline applications. Constructed with a carbon steel ASTM A350 LF2 body and F53 duplex stainless steel trim, it delivers excellent strength, corrosion resistance, and long-term reliability in demanding service conditions. Rated at Class 300 LB with RF flanged ends, the valve ensures tight sealing and safe operation. The gear-operated design enables smooth, precise control. As a leading DBB ball valve supplier from China, we supply high-quality, engineered solutions for oil, gas, and industrial systems.
Valve Description:
181302031 Double Block & Bleed Ball Valve, DBB Trunnion Mounted Ball Valve
Structure: Full Welded
Sizes: 16 Inches, DN400, 400mm
Nominal Class: Class 300 LB, PN50
Design Standard: API 6D, BS 5351
Bore Type: Full Bore or Reduced Bore
Operation: Gear
Seat Insert: RPTFE, DEVLON, NYLON, PEEK
Face to Face: ASME B16.10
Test and Inspection: API 598, API 6D
Body Material: ASTM A350 LF2, ASTM A105N, Inconel 625, ASTM A182 F53, ASTM A182 F51, ASTM A182 F316, ASTM A182 F304, 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.
