340PS, 340PSL Dispensing Valves

Tridak LLC
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For Accurate and Repeatable Fluid Dispensing
TORRINGTON, Conn., Jan. 4, 2010 – Tridak is offering the Model 340PS and the Model 340PSL positive-displacement dispensing valves for accurate and repeatable fluid dispensing. Both valves offer true positive-displacement operation and incorporate the efficiency of a disposable fluid path from the reservoir to the dispense tip.
Sequenced piston actuation dispenses a consistent shot-to-shot volume, regardless of material viscosity or viscosity fluctuation. This feature renders the valves suitable for use in applications that require extremely precise dispense volume repetition. The valves are effective with materials that are shear-sensitive, extremely high or low in viscosity, and with those that have tacky or stringy characteristics, or have drifting viscosities due to limited pot life.

The 340PS is best suited for smaller shot volumes, from 0.004- to 0.180-ml shots. The 340PSL offers larger shot size capability, up to 1.200 ml. Both valves are available with polyurethane, flexible polyethylene or Teflon tubing. They feature patented overstroke adjustment that prevents premature tubing wear, allowing users to run millions of cycles before tubing replacement is required. The company offers a variety of tubing materials, including FDA- approved materials for medical, pharmaceutical and food contact applications. The company’s engineering department can help customers determine the most suitable tubing material for their applications.

The valves must be actuated with a proprietary Model 340 valve controller that is specifically programmed to initiate the proper piston sequencing to produce positive-displacement dispensing. With minor factory modification, these dispensing valves can be gang-mounted for multicomponent dispensing.

Published: January 2010
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