The API 6A trunnion ball valve is a specialized ball valve design whose defining feature is that the ball is no longer free-floating like in a floating ball valve. Instead, it is securely fixed within the valve body by two or more trunnions (typically bearings). This design ensures the ball remains in a fixed position during operation, eliminating direct contact and friction between the ball and the seats. As a result, seat wear is significantly reduced, extending the valve's service life. Additionally, the trunnion structure enables higher pressure resistance, making trunnion ball valves particularly suitable for high-pressure, large-diameter applications.
Valve Description:
181104012 API 6A Ball Valve
Design Standard: API 6A
Body Material: AISI 4130/ASTM A694 F60/ASTM A694 F65
Trim Material: AISI 4140/F51/17-4PH/Inconel Trim
Nominal Size: 1-13/16 Inch to 11 Inch
Nominal Class: 2000 PSI-15000 PSI
Bore Type: Full Bore or Reduced Bore
End Connection: RTJ, BW, and Hub
Operation: Lever/Gear/Bare Shaft
Structure: Bolted Bonnet
Seat Insert: PEEK or Hardfaced
Face to Face: ASME B16.10/MFG'S
Test and Inspection: API 6A
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, SPE and DPE Seat Design (SPE x SPE, DIB-1, DIB-2), Bubble-Tight Shut-Off
Material Class: AA, BB, CC, DD, EE, FF, HH
Temperature Class: L, N, P, S, T, U, V, X, Y
Specification: PSL1 - PSL3G
Performance: PR1, PR2
Product Range:
Body Material: Carbon Steel, Stainless Steel, Alloy Steel
Normal Diameter: 1-13/16 Inch - 11 Inch
Pressure Range: 2000 PSI - 15000 PSI
End Connection: RF, RTJ, BW, HUB
Working Temperature: -26°C - +150°C
Operation: Manual(lever, gear), Pneumatic Actuator, Motor Actuator
