The flange type ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.
| Class | Nominal diameter | Unit | Main connection dimension | ||||||||
| Inch | DN | L | D | D1 | D2 | b | z-∅d | H | W | ||
| 150Lb (2.0Mpa) | 1/2" | 15 | mm | 108 | 89 | 60.5 | 35 | 11 | 4 - 16 | 65 | 120 |
| 3/4" | 20 | mm | 117 | 98 | 70 | 43 | 11 | 4 - 16 | 70 | 130 | |
| 1" | 25 | mm | 127 | 108 | 79.5 | 51 | 12 | 4 - 16 | 85 | 130 | |
| 1-1/4" | 32 | mm | 140 | 117 | 89 | 64 | 13 | 4 - 16 | 100 | 160 | |
| 1-1/2" | 40 | mm | 165 | 127 | 98.5 | 73 | 15 | 4 - 16 | 120 | 205 | |
| 2" | 50 | mm | 178 | 152 | 120.5 | 92 | 16 | 4 - 19 | 130 | 205 | |
| 2-1/2" | 65 | mm | 190 | 178 | 139.5 | 105 | 18 | 4 - 19 | 140 | 210 | |
| 3" | 80 | mm | 203 | 190 | 152.5 | 127 | 19 | 4 - 19 | 170 | 300 | |
| 4" | 100 | mm | 229 | 229 | 190.5 | 157 | 24 | 8 - 19 | 205 | 300 | |
| 5" | 125 | mm | 356 | 254 | 216 | 186 | 24 | 8 - 22 | 260 | 800 | |
| 6" | 150 | mm | 394 | 279 | 241.5 | 216 | 26 | 8 - 22 | 350 | 900 | |
| 8" | 200 | mm | 457 | 343 | 298.5 | 270 | 29 | 8 - 22 | 500 | 1000 | |
1. It features low fluid resistance, with a resistance coefficient that matches that of a pipe of the same length.
2. The sealing performance is excellent, as the valve seat commonly utilizes plastics such as PTFE, RPTFE, nylon, and PEEK, making it suitable for applications in vacuum systems.
3. Operation is straightforward, allowing for quick opening and closing. A simple 90° turn is sufficient to move from fully open to fully closed, which is particularly beneficial for long-distance control.
4. Maintenance is uncomplicated, thanks to the valve's simple structure. The sealing ring is typically movable, facilitating easy disassembly and replacement when needed.
Flanged ball valves that comply with ISO 5211 come in a variety of designs. When categorized by the ball structure, they include floating ball valves, fixed ball valves, and elastic ball valves.
In terms of body construction, these valves can be classified as 1-piece, 2-piece, or 3-piece ball valves.
From a material perspective, options include iron ball valves, WCB ball valves, and stainless steel ball valves.
With respect to pressure ratings, different manufacturing standards yield classifications such as PN 1.0-32.0 MPa, ANSI Class 150-900, and JIS 10-20K.
For operation methods, these valves can be equipped with a lever handle, worm gear, pneumatic actuator, electric actuator, or hydraulic system, among others.
The flange type ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.
Yes, a flange type ball valve can be used for isolation.
Its ball is floating. under medium pressure, the ball can move and tightly press on the sealing surface of the outlet end to ensure that the outlet end is sealed. The floating ball valve has a simple structure and good sealing performance, but the outlet sealing ring bears all the working medium pressure, so it is necessary to consider whether the outlet sealing can withstand all the pressure or not. This structure flange type ball valve is widely used in low and medium pressure.
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