Wafer segment ball valves are a type of industrial valve used to control the flow of fluids in a pipeline. They are known for their compact design, which allows them to be installed in systems where space is limited.The ball in these valves is typically a segment (partially spherical), which provides better control over the flow compared to a full ball.Available in various materials such as stainless steel, carbon steel, and other alloys to suit different media and operating conditions.Suitable for a wide range of applications, including water treatment, chemical processing, and HVAC systems.
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
Live Loaded Packing
The spring loaded Teflon V-ring type packing provides maintenance free service
Premium Finishing
The stainless steel ball is NickelChromium plated and polished for the ultimate in corrosion resistance and extended seat life
Universal Actuation
The ISO 5211 top mount allows VSI to offer a wide range of electric, pneumatic, hydraulic, failsafe, and other actuation packages
High Performance Body
Dual rated for installation between both ANSI Class 150 and Class 300 flanges. Includes NPT connection for threaded installations
Positive Positioning
Shaft and segmented ball are connected by a knurled pin pressed in place and welded to ensure minimal backlash
Easy Retrofit Installation
The face to face dimensions of the Series V conform to ASME B16.10 or ISA S75.08.02 to accommodate easy retrofit replacement of older globe and other outdated control valves.
Material Specification | |||
NO. | DESCRIPTION | CARBON STEEL | STAINLESS STEEL |
1 | BOLT | A193 B7 | A193 B8M |
2 | CAP | A216 WCB | A351 CF8/CF8M |
3 | O-RING | VITON | VITON |
4 | GASKET | RPTFE | RPTFE |
5 | BODY | A216 WCB | A351 CF8/CF8M |
6 | SHAFT | A182 F6A | A182 F304/F316 |
7 | BOLT | A193 B7 | A193 B8M |
8 | SEAT RING | A182 F304 | A182 F304/F316 |
9 | SEAL | PTFE | PTFE |
10 | PIN | STAINLESS STEEL | STAINLESS STEEL |
11 | BALL | SS304 | SS304/SS316 |
12 | PIN | STAINLESS STEEL | STAINLESS STEEL |
13 | SHAFT | A182 F6A | A182 F304/F316 |
15 | PACKING | FLEXIBLE GRAPHITE | FLEXIBLE 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 |