Function
A floating ball valve is a quarter-turn valve used primarily in industrial settings to control the flow of liquids or gasses through pipelines. Its design features a floating ball within the valve mechanism, allowing for quick and efficient opening and closing.
CHARACTERISTIC
- Anti-Blowout Stem design: A blow-out proof stem feature ensures that the graphite packing rings can be replaced while the valve is under pressure, without the stem being pushed out (blown out) as the valve is in the open / closed position, pressure is always acting upon the bottom of the stem, trying to push the stem up.
- A fire-safe design, ensures that when a valve is in close proximity of a fire, with a temperature not exceeding 750°C, the leakage through the closed valve and the external seals, do not exceed the leakage rates as stated in API 607 / API 6FA.
- Anti static design in working conditions with flammable media crucial.
- The design of the standard connection plate includes ISO 5211 Top flange on all valves operated by handles, making it convenient for customers to change the operating mode at any time.
- It has the function of self pressure relief in the cavity.
- Locking device, to prevent accidental operation of the valve, the valve may be equipped with a padlock device, especially for valves installed in the field or not allowed to be opened or closed in the process. To prevent safety accidents caused by others' accidental operation, it is necessary to lock the valve.
DESIGN, MANUFACTURING, AND INSPECTION STANDARDS
Design and manufacturing: API 6D、ISO 17292、GB/T 12237、JB/T 7745、API 608
End connection dimension: ASME B 16.5、EN 1092、GB/T 12221、JB/T 79、GB/T 9113、HG 20592、HG 20615
Face to face: ASME B 16.10、EN558、GB/T 12221
Fire safe design: API 607/6FA、JB/T6899
Inspection and testing: API 6D、ISO 5208、API 598、GB/T1 3927、GB/T 9092
H2S resistant materials: NACE MR0175
