Naibang Tunnion mounted ball valve have double block and bleed function, but a floating type can’t. Trunnion ball valve could block the medium from both upstream and downstream, it’s totally bidirectional design. When the pressure in the valve cavity is higher than the pretightening force, it will push the seat move to relief the pressure, so to keep safe
Naibang Valves has extensive experience in manufacturing Trunnion Mounted, Side & Top Entry Ball Valves, both Soft and Metal Seated.
Nominal diameter: 1/2" - 48"
Pressure: Class 150 - Class 2500
Temperature: -196 °C - +560°C
Material: A105, LF2, F304, F316, F316L, F304L, Alloy steel, Etc
Operation: Handle, Gear, Electric actuator, Etc
Suitable medium: Water, Oil, Gas, Etc
These valves comply with the applicable requirements of the following standards:
Butt weld end: ASME B16.25
Design and manufacture: API6D
Test and inspection: API598, API6D
Face to face(end to end): ASME B16.10
Flange connection: ASME B16.5, ASME B16.47 or to API605