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DESCRIPTION OF OPERATION
The 1206 Dispense Valve is a positive displacement valve that requires continuous material feed.
The operation of the valve is as follows:
Material enters the Dispense Valve through the material inlet port located on the metering rod/sleeve
assembly and fills the dispense cavity.
The start device activates the dispense cycle.
To dispense, air is valved to the top fitting and vented from the bottom, lowering the metering rod, blocking
the material inlet and pushing material past the spring-loaded check valve until the stroke adjustment collar
stops at the top cylinder block. At that time, the material pressure becomes less and the spring-loaded
check valve reseats itself, stopping the material flow.
After the time delay, air is valved to the bottom fitting and vented from the top, allowing the metering rod to
rise; when the rod passes the inlet, material is pushed in to fill the dispense cavity.
The system is again in the normal “ready” state.
SETUP PROCEDURE
MOUNTING DISPENSE VALVE
The1206 dispense valve can be mounted in a variety of ways. Consult the factory for an application review.
AIR CONTROLLER
Operation of the 1206 requires a controller that provides the following:
A minimum of 0.5 SCFM (2.3 cm
3
) of dry, unlubricated air at a minimum pressure of 70 psi (4.8 bar) and a
maximum of 100 psi (6.9 bar).
Time delay capability to allow the valve to cycle.
Independent air pressure regulators for material reservoir and valve operation.
Air supply to the material reservoir; this connection will vary depending on the type of reservoir.
A start device to signal the controller to cycle the valve.
Connection for an 1/8 inch (3.175 mm) ID pressure tubing for use between the controller and syringe.
NOTE: If the factory supplied syringe is used, air pressure must be regulated to 60 psi (4.1bar) maximum.
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