ASTM A182 F51 DBB Trunnion Ball Valve, API 6D, 48 Inches, RF

This API 6D trunnion-mounted ball valve is engineered for large-diameter, high-reliability pipeline applications. Featuring a fully welded ASTM A182 F51 duplex stainless steel body and corrosion-resistant ASTM A182 F316 trim, it ensures superior strength, sealing performance, and long-term durability. The 48-inch valve is rated for Class 150 LB and equipped with RF flanged ends for secure installation. Gear operation enables smooth, controlled actuation even under demanding service conditions. Designed for oil and gas, petrochemical, and transmission systems, it delivers dependable isolation and low operating torque. As a leading DBB trunnion ball valve manufacturer in China, we provide proven quality, engineering expertise, and competitive solutions worldwide.
 

Valve Description:
181302021 DBB Trunnion Mounted Ball Valve, Double Block & Bleed Ball Valve
Design Standard: API 6D, BS 5351
Nominal Size: 48 Inch
Nominal Class: Class 150 LB
Seat Insert: RPTFE, DEVLON, NYLON, PEEK
Structure: Full Welded
Operation: Gear
Body Material: ASTM A182 F51, ASTM A105N, ASTM A350 LF2, ASTM A182 F304, ASTM A182 F316, ASTM A182 F53, F55, Inconel 625
Trim Material: ASTM A182 F6A, F304, F316, F51, F53, F55, A105+ENP, LF2+ENP
Bore Type: Full Bore or Reduced Bore
Face to Face: ASME B16.10
End Connection: RF Flanged
Test and Inspection: API 598, API 6D
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.