Key Specifications / Features
This 2-inch (DN50) Double Block & Bleed (DBB) valve is designed for demanding industrial applications, featuring a robust full-welded construction for maximum integrity and leak prevention. Manufactured from high-quality materials to meet API 6D and BS 5351 standards, it is rated Class 2500 LB / PN420, ensuring reliable performance under high-pressure conditions. The valve’s RTJ flanged ends provide secure, tight connections within piping systems, while its double-block and bleed design allows safe isolation and pressure relief for maintenance or testing. Ideal for oil, gas, and chemical pipelines, this DBB valve delivers durability, precision, and long-term reliability. As a leading Trunnion Ball Valve Factory in China, we ensure top-quality manufacturing and dependable supply.
Valve Description:
181302106 DBB Ball Valves, Trunnion Mounted Ball Valve
Design Standard: API 6D, BS 5351
Sizes: 2 Inches, DN50, 50 mm
Pressure: Class 2500 LB, PN420
Body Material: ASTM A105N, ASTM A182 F316, ASTM A350 LF2, Inconel 625, ASTM A182 F51, ASTM A182 F55, ASTM A182 F304, ASTM A182 F53
Bore Type: Full Bore or Reduced Bore
Trim Material: ASTM A182 F304, ASTM A182 F6A, ASTM A182 F316, F51, F53, F55, A105+ENP, LF2+ENP
Structure: Full Welded
Face to Face: ASME B16.10
Test and Inspection: API 598, API 6D
End Connection: RTJ Flanged
Operation: Gear
Seat Insert: RPTFE, DEVLON, NYLON, PEEK
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.
