Eccentric Segment Ball Valve
Valution model EB Series is a Segment Ball control valve that allows precision control even in fine signal fluctuations as the ball and seat surfaces rotate non-contact, when the center of the body/seat and the center of the valve plug/stem are at an Eccentric Angle.
It is a control valve that has simple internal flow paths in an Eccentric 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 eccentric ball, the characteristics of the flow are basically the standard of the Lear, and support of EQ-% by the Positioner is possible.
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 IV, V, and IV.
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#~900# |
| Temperature Range | -196 ~ 350 ℃ (according to the material spec.) |
| Body Materials | A216 WCB A351 CF8, CF8M, CF3M, Inconel, Titanium, others |
| Trim Materials | 316, 316L, 317L, Inconel, W-Co. overlay, Titanium Soft seat and others |
| Trim Design | Eccentric Segment Ball type |
| Trim Characteristics | Linear, E-Q% Positioner(option) |
| Seat Leakage Class | ANSI/FCI 70-2, Class IV, 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 |