SECTION 5 - VALVE ADJUSTMENTS
25
Zator
Via Galvani, 11 - 20095 - Cusano Milanino (MI) - Italy
www.zator.it - [email protected]
The adjustment of the dispensed fluid quantity (ex. glue) by the valve is determined by:
• The nozzle diameter: greater diameter → more fluid quantity
• The fluid pressure: greater pressure → more fluid quantity
• The needle travel adjustment: greater needle travel → more fluid quantity
Operating on this points it’s possible to adjust the dispensed fluid quantity.
5
VALVE ADJUSTMENTS
5.1
Fluid quantity adjustment
5.2
Needle travel adjustment
To adjust the needle travel, operate on the
adjustment screw placed on the top of the valve as
follows:
1. Unscrew the nut with a 10mm wrench by
holding the screw with a 3mm hex key;
2. Then by holding the nut:
• Turn counter-clockwise the screw to increase
the needle travel therefore the dispensed fluid
quantity;
• Turn clockwise the screw to decrease the
needle travel therefore the dispensed fluid
quantity. At the end of the needle travel, the
valve is completely closed, therefore it doesn’t
dispense any fluid;
3. Finally tighten the nut by holding the screw.
10
Nut
Adjustment
screw
3
5.2.1 Screw adjustment version
+
-
A
B
+
-
A
B
Don’t tighten with excessive force the
needle adjustment screw to avoid damage
to the nozzle and the needle.
