V-port Segment Pneumatic Ball Valve (Wafer)

The v-port segment ball valve is primarily
designed for flow control, and it can also be used for shut-off
operation. The notched port on the segment ball contributes
to strong shear stress to cut through media with fibers and
particles. Consequently, this v-port segment valve is a good
general control valve for most pulp and paper process
applications, or similar flow contains fibers and particles.

1.  Body	WCB	CF8	CF8M
2.  V-port Segment	CF8+HCr	CF8+HCr	CF8M+HCr
3.  Pin	304	304	316
4.  Seat	304+STL	304+STL	316+STL
5.  Spring	316L	316L	316L
6.  O-ring	VITON	VITON	VITON
7.  Bearing	304+PTFE	304+PTFE	316+PTFE
8.  Lower Stem	304	304	316
9.  O-ring	Viton	Viton	Viton
10.Packing Gland	WCB	CF8	CF8M
11/12. Gasket	PTFE	PTFE	PTFE
13. Washer	Q235	304	316
14/15 Bolt	25	304	304
16.Bearing	304+PTFE	304+PTFE	316+PTFE
17.Key	304	304	316
18/19/20. Packing	PTFE or Graphite	PTFE or Graphite	PTFE or Graphite
21. Packing Gland	WCB	CF8	CF8M
22. Nut	Q235	304	304
23. Upper Stem	304	304	316

Body
• Single-piece body prevents leaks caused by separate flanges or locking rings.
V-port Segment Ball:
• Specially designed V-notch ball provides strong cutting stress and tight sealing.
Well ground notched ball surface ensures small operating torque and tight seal,
especially for metal seated segment valve.
Seat
• Special seat design eliminates cavity between seat and valve body. This,
consequently, prevents media from jamming between seat and body, ensure reliable
sealing.
Seal Surface
• Nitriding/Tungsten Carbide/Satellite Alloy/Nickel Base Alloy plating are available for
abrasive media.
Stem
• Stem is finely grounded to match actuator excellently, which prevents rocking motion
and potential failure of the v-port segmented valve.
• Close-fit spline or pin-key are available for stem-segment ball connection to provide
reliable transmission without motion lost or dead band.

This pneumatic V-port segment ball valve uses a wafer connection. The V-shaped opening in the rotating segment changes the available flow area for the selected control duty. Check the actual mating flanges, installation dimensions and pneumatic package before approving the assembly.

Product Overview

Wafer installation is a product identity, not a promise of interchangeability with every flanged line. Its fit depends on the mating flange and pipe dimensions, bolt arrangement and specified clearances. Required flow characteristic, shutoff performance and trim selection must be confirmed for the quoted valve rather than inferred from the V-port name.

Selection and Ordering Notes

• Provide the mating flange standard, size, facing, pipe bore and available face-to-face space.
• Submit fluid data and all operating flow and pressure-temperature cases.
• Confirm the actual seat, segment and stem materials and the required shutoff criterion.
• Identify air supply, command and feedback, positioner requirements and failure response.

Related information: Review pneumatic valve assemblies | Valve technical guidance | About Trekre.

Frequently Asked Questions

Is this the wafer version or a double-flanged valve?

The confirmed connection for this page is wafer. Send your mating flange and installation dimensions so the selected valve's fit and fastening arrangement can be checked.

Can I select the valve from the pipe diameter alone?

Provide the required flow cases and corresponding inlet and outlet conditions. Request trim sizing and control-characteristic confirmation for the selected V-port assembly.

Does the V-port design guarantee non-clogging operation with my process fluid?

No universal solids-handling guarantee should be assumed. Describe particles, fibers, concentration and operating conditions and request application and trim confirmation for the actual valve.