Underwater Pelletizing Diverter Valve

The diverter valve is roughly composed of six parts: oil cylinder, plunger, pull rod, pull rod nut, pad iron, valve body. The valve body is equipped with two material melt flow channels. The push-pull piston is controlled by the oil cylinder, thereby enabling the switching between the discharge position and the working position.

Before starting the machine, the diverter valve is in the discharge position, and the water pump is turned on for a small circulation of the pipeline. Then, the residual materials can be manually cleared, or you can directly start the machine to clear them up with the new materials. The delay time for the steering is controlled by the PLC cabinet to ensure that the molten material and the water in the pipeline reach the die head at the same time.

Application Field

Used as a diverter valve in underwater pelletizer:

1. Thermoplastic elastomer: rigid demand for underwater pelletizing; TPE, TPV, TPU, TPR.
2. Hot melt adhesive: rigid demand for underwater pelletizing, requiring a chiller and 100-meter pipeline; using various resins as carriers, such as PE, EVA, PA, PP, etc.
3. High-yield PP filling plastic: improved type of pelletizing method, requiring centrifugal dehydrator, air-cooling vibrating screen and other drying equipment, as well as a sewing packaging system.
4. Maleic anhydride grafting (MAH): improved type of pelletizing method, requiring a chiller and 100-meter pipeline.
5. EVA: rigid demand for underwater pelletizing, requiring a chiller and 100-meter pipeline.
6. Rubber: nitrile, EPDM blending, EVA blending (rubber-plastic blending category)
7. PLA

Used as a sampling valve after the extruder

In TPU reactive extrusion, it can be installed between the last section of the extruder barrel and the melt pump, facilitating the sampling and testing of material properties after the material mixing is completed.