Segment V-Ball Control Valve
Valution model VB Series is a Segment Ball control valve designed to form openings in seats and balls in 'V' shape according to the rotation of the valve stem, enabling precision control.
It is a control valve that has simple internal flow paths in the concentric ball trim structure, so it can have good effects not only in clean fluid conditions but also in highly corrosive slurry services.
Depending on the characteristics of the V-type Ball, the flow characteristics are basically EQ-% characteristics as standard, and Liear's support is possible by positioner.
According to the Required seat tightness, it is also possible to apply metal or soft seat and to support the fulfillment of the leakage class VI, V, and VI.The body has a straight shape structure, which has low fluid resistance and enough space around the trim.
This model can apply spring-diaphragm, cylinder and electric motor type actuators.
It mainly performs modulating functions with traditional E/P, smart and HART positioners.
| Size Range | 1” ~ 20” (other sizes are available) |
|---|---|
| Pressure Range | ASME 150#~600# |
| Temperature Range | -40 ~ 350 ℃ (according to the material spec.) |
| Body Materials | A351 CF8M, CF3M, Inconel, Titanium, others |
| Trim Materials | 316, 316L, 317L, Inconel, W-Co. overlay, Titanium Soft seat and others |
| Trim Design | Segment V-Ball type |
| Trim Characteristics | EQ-% |
| Seat Leakage Class | ANSI/FCI 70-2, Class VI, V, VI according to the spec. |
| Applicable Actuators | Pneumatic Diaphragm, Cylinder, Electric Motor, others |
| Applicable Instruments | P/P & E/P & Smart Positioners, SOV & other Relays |
| Options | Handwheel, Limit Stopper, Special NDT |