Efd 725D INSTALLATION GUIDE
Introduction
The 725D Series is simple to use and will operate
many millions of cycles without maintenance.
The unique design of the 725D Series valve provides
a clean fluid cutoff with pullback for precise fluid
application at high cycle rates.
The 725DA-SS and 725DA valves feature an
adjustable pullback and flow control. The 725D and
725D-SS do not have the adjustable feature.
Each valve is shipped with a dispensing tip adapter,
fluid inlet fitting and 5-feet actuating air hose
installed. For high flow applications, the dispensing
tip adapter can be removed for installation of 1/4
NPT metal or plastic nozzles.
725D Series Piston Valve
INSTALLATION GUIDE
Electronic pdf files of EFD®manuals are also available at
www.efd-inc.com/manuals.html.
USA: 800-556-3484 or +1-401-434-1680
Europe: 0800 585733 or +44 (0) 1582 666334
Asia: +86 (21) 5854 2345
technical@efd-inc.com www.efd-inc.com
®
A NORDSON COMPANY
supply line
Inlet fitting
1/8 NPT
Control air hose
Fluid
Air cylinder body
Open
Close
Stroke adjustment
Fluid body
Tip adapter
1/4 NPT
Dispensing tip
Installation
1
7
5
C
l
o
s
e
O
p
e
n
3
Set desired deposit size by adjusting valve open
time. Refer to valve controller operating manual.
10
1. Mount valve with an EFD universal
valve mount (#7002VM) or other fixture.
2. Connect fluid supply line to valve. If
3/8” tubing is used, change to fitting
#7610BP supplied.
3. Connect fluid supply line to reservoir.
The reservoir can accept either 1/4” OD
or 3/8” OD tubing using #62518PT
supplied.
4. Connect valve control air hose to
ValveMate
TM
controller (or other pneumatic switch) used to control valve
open time.
5. Choose a dispensing tip or nozzle—
small tips (18-20 gauge) for low viscosity
fluid and larger tip or nozzle for higher
viscosities.
6. Fill reservoir by pouring fluid directly
into tank liner or manufacturer’s bottle
placed inside reservoir. Secure cover
prior to setting pressure.
7. Set reservoir pressure to low for thin
fluids and higher for thick fluids.
8. Place a cup under the dispensing tip
or nozzle and actuate the valve until fluid
lines, valve and dispensing tip are free
of air.
9. Set desired flow rate by adjusting fluid
reservoir pressure, valve stroke setting
*
or changing dispensing tip or nozzle.
10. Set desired deposit size by adjusting
valve open time. Refer to valve
controller operating manual.
*
725DA and 725DA-SS only
8
Air Output
Exhaust
2
6
4
9
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 dispensing
system.
To exhaust
To pressurize
A NORDSON COMPANY
®
Steady
Test
Run
Setup Program
Time Set
Clear
Fast Slow
POWER
RUN
SETUP
CYCLE
Fast Slow
Time Set
Pressure
STOP
Time
Purge
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