Tridak Model 826 disposable fluid path valve (pinch valve) features adjustable suck-back control to provide clean shutoff for tacky, stringy materials; prevents material drool from forming at the dispense tip with low viscosity fluids. Also features disposable fluid path technology, which protects fluids from contamination and air entrapment. Fluid tubing is replaceable, and comes in two sizes and a variety of materials. Is for all low-to-high viscosity materials, including those with stringy flow properties. Possesses flow control and an over-stroke adjustment; fluid deposits range from micro liter shots to continuous beads. Over-stroke adjustment feature prevents tubing damage.
 
Tridak, www.tridak.com