Loctite Dispense Valve 97114 User Manual

An uncovered bottle of Loctite

®

product is placed directly into the reservoir and the reservoir lid is

clamped in place.

The reservoir is then pressurized from a Loctite controller using clean, filtered dry air. Air within the
reservoir will push down on the liquid in the bottle and force it through the product feedline to the
shutoff valve.

The amount of product dispensed is controlled by 3 main factors:

1. Amount of pressure in the reservoir.

2. Length of time the shutoff valve remains open.

3. Dispensing needle size.

With the closing of the piston in the Dispensing Valve, a negative pressure (suck-back effect) is
produced that prevents the product from continuing to run or drip out of the dispensing needle 1.
This suck-back effect can be changed by adjusting the piston stroke with the adjustment knob 10.

The main purpose of the adjusting knob is to control the amount of suck-back. There is a small
amount of flow control in the first 1/2 turn of the adjusting knob - after that point, the adjusting
knob only controls the suck-back effect.

The opening and closing of the Dispense Valve 97113 / 97114 are influenced by the speed with
which the pressurized air can escape from the double action actuator assembly.

The opening speed of the dispensing valve can be changed with the air outlet choke 8.

The closing speed of the dispensing valve can be changed with the air outlet choke 9.

With the changing of the opening and closing speed for the Dispensing Valve, the dispensed
quantity is also changed.

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