WHICH SCREEN CHANGER

THE MODELS

Melt Diverter Valves, or Start-Up Valves, are normally fitted to medium and large polymer production lines, to allow polymer to be dumped (or diverted) when starting a line again after a shut-down, thus avoiding degraded or off-spec polymer to pass through the die.  These compact-design, space saving valves are normally fitted upstream of a Screen Changer and pelletizing die and are hydraulically operated to allow fast movement for dumping or moving to in-line production.  They can be operated by the same hydraulic unit which operates the Screen Changer (if available).

For new or existing lines, IPL can design and manufacture adaptors, which may be required to connect the Melt Divert Valve to the rest of the line.

Custom-built melt diverter valve, suitable for connecting to an extruder, melt pump and screen changer.  Designed to divert polymer prior to start-up of a line, or ready to discharge polymer automatically in the event of a die blockage.

 With the sliding piston in the ‘down’ position, the polymer passes through the valve.  Within approximately 1 second, the sliding piston can move ‘up’, at full extrusion output, and discharge polymer to the floor, or into a container.  Can be electrically, steam or oil heated.  The DV is fitted with adjustable metal seals.