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2
781S Series Spray Valve
Prior to installing this valve, please read the
associated reservoir and valve controller
operating instructions to become familiar with
the operation of all components of the spray
system.
1.
Connect the fluid supply line to valve.
2.
Connect the fluid supply line to the reservoir.
3.
Connect the control air hose and the nozzle
air hose to corresponding outputs on
solenoid block.
4.
Fill reservoir by pouring fluid directly into
tank liner or manufacturer’s bottle placed
inside reservoir. Secure cover prior to setting
pressure.
5.
Set reservoir pressure to low for thin fluids
and higher for thick fluids.
6.
Using the Mode button on the ValveMate
controller, place the controller in the PURGE
mode. In PURGE
mode
only, channels
and
can be
selected independently without nozzle air
pressure.
7.
Using the needle stroke control knob on
the 781S valve, set the fluid flow rate to
one or two drops per second. Check the
flow rate by actuating the controller in the
time override mode. Make valve stroke
adjustments when the controller is off.
8.
Set the nozzle air pressure on the nozzle to
0.7 bar (10 psi) and actuate the controller.
The valve will produce a fine spray. To
change fluid flow, use the needle stroke
control knob and / or reservoir pressure. To
change nozzle air, use the nozzle air pressure
regulator. Higher pressures will provide finer
spray.
Installation
NOTE:
The area of spray coverage is determined by the distance between the spray valve nozzle and the work surface.
Refer to the charts on the back page to determine this distance.
SPRAY VALVE CONTROLLER
8040
EFD
781S
EFD
781S
3
6
5
8
2
4
1
7
Open
Close
