The working principle of the forged trunnion ball valve is based on the rotation of the spool to control the on/off state and flow of fluid. When the spool is rotated parallel to the seat, the spool holes align with the seat holes, allowing fluid to flow through both. This establishes the open state of the valve. Conversely, when the spool is rotated 90 degrees so that the spool holes are perpendicular to the seat holes, the valve is closed, and fluid cannot flow through. This establishes the closed state of the valve.
Forged Trunnion Ball Valve Specification
Size Ranges: 1/2" through 40"
Pressure Ratings: ANSI #150 to 2500
Standards compliance: API 6D, BS 5351, ASME B16.34, DIN 3202 or equivalents
Materials: Forged Carbon Steel, Stainless Steel, Duplex or Other Specials
Ends Connections: Flanged R.F, RTJ, Welded or Victaulic
Applicable standards |
|
| Design | ASME B16.34, ISO 17292, API 608, API 6D |
| Inspection & testing | API 598 |
| Marking | MSS SP-25 |
| Fugitive emission | ISO 15848 |
Applicable end finishes |
|
| Face to face | ASME B16.10 |
| Socket weld | ASME B16.11 |
| Screwed ends (NPT) | ASME B1.20.1 |
| Flanged ends | ASME B16.5 |
| Butt welding ends | ASME B16.25 |
Forged Steel Trunnion Ball Valve
FAQ
What are the temperatures and pressures of the valves?
For metal seat valves, the temperature range is -196ºC to 425ºC. For soft seat ball valves, the temperature range is -29ºC to 200ºC. The pressure range is from PN6 to PN420 (150LB to 2500LB).
What are the materials of the valves?
Stainless steel, forged stainless steel, alloy steel, duplex steel, titanium alloy, nickel-aluminum alloy, bronze alloy, and so on. Specific material requirements can be consulted at any time.
What is the delivery time?
Our factory is near Ningbo and Shanghai ports. Generally speaking, it takes 7-10 days for export to Asia, and 30-35 days for export to Europe, the Middle East, Africa, North America, South America, etc. by sea.
What media are your valves used for?
Mainly used for water, natural gas, and oil. When asking for a quotation, it is better to provide your medium so we can recommend the appropriate material and valve type for you.
Can ball valves be used to regulate media?
No, ball valves cannot be used for regulation; they are a type of isolation valve.
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