dymax 826 Руководство пользователя - Страница 13

Просмотреть онлайн или скачать pdf Руководство пользователя для Блок управления dymax 826. dymax 826 20 страниц. Disposable fluid path valve

Model 826 Dispensing Valve User Guide

dispensed. Simultaneous with the action of the Upper Piston (Figure 7, A), the blunt Lower

Piston (Figure 7, D) moves forward until it stops against the Adjusting Screw (Figure 7, E). This

causes the piston to partially occlude the Tubing (Figure 7, B).

Shut Off

When the valve is at the end of its dispense cycle, the actuating air exhausts. The upper piston

spring moves the Piston (Figure 7, A) forward where it pinches the Tubing (Figure 7, B). At

precisely the same moment, the blunt Lower Piston (Figure 7, D) is released so that its spring

can also return to its original position. The lower portion of the tube (Figure 7, B) returns to its

normal (open) shape. Suck-back is created from the change in the tubing shape. The valve is

now ready to repeat the cycle. Fine adjustments can be made to both flow rate and suck-back

to obtain the required results.