KFTE VALVE CO., LTD.
KFTE VALVE CO., LTD.

Flange Segment Ball Valves

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.

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Features
Structural Drawing

Features for Flange Segment Ball Valves

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.

Structural Drawing for Flange Segment Ball Valves

Flange Segment Ball Valves


Material Specification
NO.DESCRIPTIONCARBON STEELSTAINLESS STEEL
1END CAPCARBON STEELSTAINLESS STEEL
2BOLTA193 B7A193 B8M
3O-RINGNBRNBR
4BODYA216 WCBA351 CF8/CF8M
5SHAFTA182 F6AA182 F304/F316
6BALLSS304/SS316SS304/SS316
7BEARINGCOPPRE ALLOYCOPPRE ALLOY
8O-RINGNBRNBR
9SEATA182 F304+STLA182 F304+STL
10SEAT RINGA182 F304A182 F304
11PINSTAINLESS STEELSTAINLESS STEEL
12SHAFTA182 F6AA182 F6A
13BEARINGCOPPRE ALLOYCOPPRE ALLOY
14PACKING GASKETSTAINLESS STEELSTAINLESS STEEL
15PACKINGELASTIC GRAPHITEELASTIC GRAPHITE
16RINGSTAINLESS STEELSTAINLESS STEEL
17PLUGCARBON STEELSTAINLESS STEEL
18GASKETSTAINLESS STEELSTAINLESS STEEL
19PACKING GLANDA216 WCBA351 CF8/CF8M
20NUTA194 2HA194 8M
21BOLTA193 B7A193 B8M
22NUTA194 2HA194 8M
23BOLTA193 B7A193 B8M
24YOKECARBON STEELCARBON STEEL
25NUTA194 2HA194 8M
26BOLTA193 B7A193 B8M
27PINSTAINLESS STEELSTAINLESS STEEL
28GEAR--
29O-RINGNBRNBR


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