Inline Dart Valve
There are instances when a slurry control valve is required in a pipeline. Whilst a pinch valve remains an option, the greater control & rangeability of a dart valve provides superior control and these inline dart valves have been specifically developed with this in mind. The yDart, and its variations, have the same polyurethane plug and seat as our standard i-, tri-, single-, and dual-Dart configurations offering the same high level of slurry flow control
The shaft, plug, seat, bonnet and actuator of the yDart are inclined at 45° to the longitudinal axis of the pipeline so that the plug and seat arrangement may be accommodated within the body with the smallest face-to-face distance. The yDart is rubber lined for abrasion resistance.
The poly-yDart has been developed for particularly severe applications where a polyurethane lined body is preferable to a rubber lined one. For sizes up to 200mm the guidebars are integral to the body, thereafter we employ the familiar removable seat cage assembly This configuration may be offered in very small sizes starting at 25 mm which has been used on pilot plants successfully.
As the name implies, this variation on the yDart is specifically designed for the aggressive nature of the flash float market. The bonnet is only tilted 15° from normal to the pipeline’s longitudinal axis and the body fish-jaws open at the inlet to ensure good flow patterns, as predicted by CFD, through the valve. This geometry allows for a secondary port to allow unrestricted flow of the heavy and large particles straight through the valve under the seat minimizing choking.