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3.2 Drive the valve
The dosing valve DA250 is a dispensing valve that can work
both in a simple and a double effect, as there is a safety
spring that keeps the valve normally closed.
3.3 Fluid connection
The dispensing valve must be connected to a power supply
unit (pressure tank).
A hose must be connected to the fitting located at the
bottom of the dispensing valve.
Air inlet
Material input
3.4 Setting of the valve
Adjustment of the membrane travel determines the amount
of product delivered.
To adjust the stroke, act on the adjuster knob located at the
top of the dispensing valve.
Rotate clockwise to decrease the membrane stroke and
consequently the amount of product. Turning clockwise,
reaching the end of the stroke, the dispensing valve will be
completely closed, so it will not produce the product.
Rotate counterclockwise to increase the membrane stroke
and then the amount of product.
3.5 Setting of the material quantity
Adjusting the amount of material is determined by:
> The diameter of the nozzle
> Material pressure
> Adjustment of membrane travel
Acting on these factors, you can adjust the amount of material you want.
Adjustment knob
Do not tighten the needle adjustment too firmly to avoid damaging the membrane.
DIAPHRAGM VALVE DA 250
