Flange segment ball valves are a type of industrial valve used to control the flow of fluids in a pipeline. They are characterized by their flanged ends, which allow them to be bolted to the piping system, and their segmented ball design, which provides precise control over the flow. Unlike traditional ball valves that use a full spherical ball, flange segment ball valves use a segmented ball. This design allows for better control over the flow, especially in applications requiring throttling.The segmented ball design provides a more linear flow characteristic, making it suitable for applications where precise flow control is necessary.They can be manually operated or automated using electric, pneumatic, or hydraulic actuators.
Applicable Standards
Valve Design: ASME B16.34
Size Range: NPS 1 to 16 | DN 25 to 400
Pressure Ratings: ASME Class 150, 300, 600 | PN 10, 16, 25, 40
Temperature Range: -50°F to 500°F | -46°C to 260°C
End Connections: Flanged/Wafer
V Port Type: Standard, 60°, 30° /Custom on request
Flange Drilling: ASME B16.5 / EN 1092-1
Top Flange: ISO 5211
Face-to-Face: Flanged-ISA 75.08.02 / ASME B16.10
Wafer- KFTE Internal Standard
Leakage Classification: Resilient Seat-Class VI per ANSI/FCI 70-2 | IEC 60534-4
Metal Seat: Class IV per ANSI/FCI 70-2 | IEC 60534-4
ONE-PIECE BODY
Provides a rigid, robust shell capable of withstanding pipe loading, and eliminates potential leak paths.
SPLINED STEM TO SEGMENT CONNECTION
Provides efficient torque transmission and precise control, with low hysteresis and reduced deadband.
SELF-CENTERING BALL SEGMENT
Perfectly oriented, specially designed shaft pin facilitates self-alignment of the ball segment, while simplifying assembly and disassembly during routine maintenance.
COATINGS
High-performance coatings on internal components ensure long life and corrosion resistance.
ENERGIZED SEAT
Seat spring provides constant force on the seat to seal against the segment at low differential pressures. At higher differential pressures, optimized sealing diameters ensure lower seat torques.
PROTECTED SEALING AREA
Seats are designed to direct media flow away from the sealing area.
Material Specification | |||
NO. | DESCRIPTION | CARBON STEEL | STAINLESS STEEL |
1 | END CAP | CARBON STEEL | STAINLESS STEEL |
2 | BOLT | A193 B7 | A193 B8M |
3 | O-RING | NBR | NBR |
4 | BODY | A216 WCB | A351 CF8/CF8M |
5 | SHAFT | A182 F6A | A182 F304/F316 |
6 | BALL | SS304/SS316 | SS304/SS316 |
7 | BEARING | COPPRE ALLOY | COPPRE ALLOY |
8 | O-RING | NBR | NBR |
9 | SEAT | A182 F304+STL | A182 F304+STL |
10 | SEAT RING | A182 F304 | A182 F304 |
11 | PIN | STAINLESS STEEL | STAINLESS STEEL |
12 | SHAFT | A182 F6A | A182 F6A |
13 | BEARING | COPPRE ALLOY | COPPRE ALLOY |
14 | PACKING GASKET | STAINLESS STEEL | STAINLESS STEEL |
15 | PACKING | ELASTIC GRAPHITE | ELASTIC GRAPHITE |
16 | RING | STAINLESS STEEL | STAINLESS STEEL |
17 | PLUG | CARBON STEEL | STAINLESS STEEL |
18 | GASKET | STAINLESS STEEL | STAINLESS STEEL |
19 | PACKING GLAND | A216 WCB | A351 CF8/CF8M |
20 | NUT | A194 2H | A194 8M |
21 | BOLT | A193 B7 | A193 B8M |
22 | NUT | A194 2H | A194 8M |
23 | BOLT | A193 B7 | A193 B8M |
24 | YOKE | CARBON STEEL | CARBON STEEL |
25 | NUT | A194 2H | A194 8M |
26 | BOLT | A193 B7 | A193 B8M |
27 | PIN | STAINLESS STEEL | STAINLESS STEEL |
28 | GEAR | - | - |
29 | O-RING | NBR | NBR |