API 6D 3-PC Trunnion Mounted Ball Valve Durable WCB A105 CF8 F304

3-PC Trunnion_Mounted Ball Valve Cast Steel WCB Gear Operated

The trunnion mounted ball valve has been designed with two floating seats, which are movable under the pressure of medium. Under the bottom of seats, seat pre-loading springs are positioned to ensure two floating seats attach the ball surface tightly. The ball is fixed by upper and lower trunnions, so the seat rings don’t afford too much flow pressure force when valve is in closed position. During service, pressure of medium pushes the front seat against the ball, forming a bubble tight seal.

Small operating torque, small deformation on seats, reliable sealing performance, long service life are the main advantage of trunnion mounted ball valve. Trunnion mounted ball valves are widely used in long distance pipeline and normal industrial pipelines that can withstand various kinds of corrosive or noncorrosive flows.

Features of Trunnion Mounted Ball Valves:
Trunnion Mounted Ball
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
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