Trunnion Mounted Flanged Ball Valve Q347F with Gear operated

Product Overview

Trunnion Mounted Flanged Ball Valve Q347F with Gear operated

Material standard :

• Design & Manufacture: API 602, BS5352, ANSI B16.34

• End Connections:

  Socket‑weld per ANSI B16.11 / JB/T1751;

  Threaded per ANSI B1.20.1 / JB/T7306;

  Butt‑weld per ANSI B16.25 / JB/T12224;

  Flanged per ANSI B16.5 / JB79.

• Inspection & Testing: API 598, GB/T13927, JB/T9092

• Construction: Bolted Bonnet (B.B) OS&Y or Welded Bonnet (W.B) OS&Y

• Material Compliance: All materials follow ANSI/ASTM requirements

• Available Body Materials: A105, LF2, F11, F22, 304(L), 316(L), F347, F321, F51, Monel, Alloy 20 and more.

Working Principle of Flanged Ball Valve

A flanged ball valve achieves tight shut‑off with only a 90‑degree rotation and low operating torque.

The full‑bore inner cavity of valve body provides a straight flow path with minimum flow resistance for the medium.

Ball valves are generally applied for full‑open / full‑close service. With updated design, ball valves can also be used for throttling and flow control.

When the valve is in closed position, the ball is pressed against the seat by mechanical force from the stem.

When the handwheel is rotated counter‑clockwise, the stem moves in reverse direction. The angular flat surface at the bottom of stem lifts the ball away from valve seat to open the valve.