781S Series Spray Valve
Installation Guide
Electronic pdf les of Nordson EFD
manuals are also available at
www.nordsonefd.com
Control air
hose
Stroke control knob
Air cap retainer
Fluid inlet tting
Stroke reference ring
Nozzle air hose
Introduction
The 781S Series precision Low Volume Low Pressure (LVLP) liquid
spray valves are designed for high transfer efciency without overspray
or airborne mist and provide consistent coating of low- to medium-
viscosity uids.
781S Series valves are simple to use and will operate many millions of
cycles without maintenance. Spray valve cleaning is accomplished by
purging with the appropriate solvent.
The 781S air cylinder body and uid body are hard-coated aluminum.
The 781S-SS valve model uses stainless steel throughout.
Fluid supply line
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