Full Port Trunnion Ball Valve Full bore Forged Steel Gear Operated
For the full bore valve, the bore diameter in the ball has the same internal diameter as the pipe, whereas a reduced bore valve has a smaller bore diameter than the internal diameter of the pipework it is on.
The full port design ensures minimal flow resistance, pressure drop and cavitation. Full-port ball valves are used where their low flow resistance is of value such as on pump suction pipes, where a pressure drop can affect pump performance. They are also used in flows containing mixed liquids and solids where flow restrictions can cause separations in the materials causing buildups and thus reducing the flow in the pipes.
Another reason for full-bore valves is for cleaning. It is common practice in the oil and gas industry to push a ‘pig’ through a piping system. A ‘pig’ looks like a ball that gets pushed through piping system to clean the inside of the pipes and valves. A full-ported valve is critical for this type of practice since a pig would get stuck on a reduced ported valve.
On the other hand, reduced-port ball valves are used where pressure drop, turbulence in the flow and material characteristics are not a concern. They also have the advantages of smaller size and lower cost.
Features of Trunnion Mounted Ball Valves:
Trunnion Mounted Ball for low operation torque
Floating Spring Loaded Seat
Double Block and Bleed (DBB)
Split Body, End Entry
2-Piece or 3-piece Body
Full Port for Pigging Operation
Fire Safe to API 607
Antistatic Device
Anti-blowout Stem
Emergency sealant sealing device
Automatic Pressure Relief in Middle Cavity of Valve
Gear Operation or Actuator Available
Optional Direct Mounting to ISO 5211
Optional Locking Device
Optional Stem Extension
Applicable Standards of Trunnion Mounted Ball Valves:
a) Design & Manufacture: API 6D, BS 5351, API 608, ISO 17292, MSS SP-72
b) Fire-safe: API 607, API 6FA
c) Face to Face: API B16.10, API 6D, EN 558, DIN 3202
d) End Connection: ASME B16.5, EN 1092, JIS B2220, ASME B16.25
e) Test and Inspection: API 6D, EN 12266, API 598
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Full Port Trunnion Ball Valve Fire Safe API 607 DN 50-900 Images
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