The Q347F is a cast steel trunnion-mounted ball valve with gear operation. The ball is supported at its rotational axis, and the seats provide the sealing contact around it.
This construction provides a supported ball arrangement for pipeline isolation. The model shown has a WCB body and flanged connections, with sizes and dimensions listed below.
Q347F Trunnion Mounted Ball Valve - Cast Steel
Series: Q347F trunnion-mounted ball valve
Body: WCB cast steel
Nominal size: DN40–400
| Ball Valve Model | Nominal Pressure (Mpa) | Test Pressure Strength(Mpa) | Test Pressure Seal(Mpa) | Temperature | Range of use |
|---|---|---|---|---|---|
| Q347F-16C | 1.6 | 2.4 | 1.8 | -29~200 ℃ | water, gas, oil |
| Q347F-25 | 2.5 | 3.8 | 2.8 | -29~200 ℃ | water, gas, oil |
| Q347F- 40 | 4.0 | 6.0 | 4.4 | -29~200 ℃ | water, gas, oil |
| Q347F-64 | 6.4 | 9.6 | 7.1 | -29~200 ℃ | water, gas, oil |
Trunnion-Mounted Construction
The trunnion arrangement supports the ball at its rotational axis. This differs from a floating ball valve, where the ball moves against the downstream seat under line pressure.
The gearbox provides mechanical assistance for manual operation. Together with the flanged body, it gives the Q347F a practical arrangement for pipeline isolation and routine operation.
For pipeline projects and replacement work, Farpro supplies Q347F trunnion-mounted ball valves with gear operation. Contact us with your valve schedule or model requirements for a quotation.