Rotating seats ball valve

Design standard
Basic standard: API 6D,ASME B16.34;
Flange connection dimesion: ASME B16.5;
Face-to-face dimension: ASME B16.10,
Pressure-Temperature rating: ASME B16.34;
Pressure Test:  API 598, API 6D;

Product 3D Schematic Diagram：
Position 1：Full-open position：



Position 2：Position at starting rotating seat


Position 2：Position at finishing rotating seat


Position 4: Full-close position


Product range
Size: DN50~DN400, 2 inch -16inch;
Rating pressure: ANSI 150lb ~ 2500lb;
Body Materials: Carbon Steel, Low-temperature Carbon steel, Stainless Steel, Forged Duplex Stainless Steel;
Trim: AISI 4130.
Operation: Lever Or Wrench Operated, Gearbox etc.

Feature:
Trunnion mounted, full-welded, rotating seats, Fire-safe design, anit-blow out stem, Seat design can be DBB, DIB-1, DIB-2 design；
Metal seated design and soft seated design are both available；
Available seat insert：Devlon, Nylon, PEEK etc.;

Advantage of rotating seats design：
The seat can rotate on itself through special desgin when we close the ball valve, it cause uniform wear to seat sealing surface，it will greatly extend the service life of the seat sealing surface；

Application:
Frequent operation in Natural gas pipeline, Refinery, Petrochemical, Oil and gas industry, Power plant, General Industry etc.