EFD 725DA MAINTENANCE GUIDE
725DA-SS and 725DA Piston Valves
MAINTENANCE & PARTS GUIDE
IMPORTANT!
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Maintenance or
Tool Crib
Supervisors
Electronic pdf files of EFD®manuals are also available at
www.efd-inc.com/manuals.html.
For EFD sales and service in over 30 countries,
contact EFD or go to www.efd-inc.com/contact
EFD, Inc.
East Providence, RI USA
800-556-3484; +1-401-434-1680 (outside the USA)
info@efd-inc.com www.efd-inc.com
EFD International Inc.
Dunstable, Bedfordshire, UK
0800 585733 or +44 (0) 1582 666334
Ireland 00800 8272 9444
europe@efd-inc.com www.efd-inc.com
EFD, Inc., Asia
China: +86 (21) 5854 2345
china@efd-inc.com www.efd-inc.com/cn
Singapore: +65 6896 9630 sin-mal@efd-inc.com
A NORDSON COMPANY
CAUTION: To prevent damage, the valve
must be disassembled starting at the fluid
outlet end of the valve.
1
2
3
4
5
8
1. Put threaded rod in mounting hole.
2. Remove body cap.
3. Remove sealing head.
*
4. With a wrench on the flats of the
air cylinder body, turn to loosen
fluid body.
5. Remove fluid body.
*
Note: For the 725DA-SS or 725DA, valve
set stroke adjustment to the full open
position (two complete rotations). The
stroke adjustment must stay open
throughout reassembly.
6. Remove input air hose from
push-in fitting on air cap.
7. Insert 1/8” hex wrench through air
inlet hole in cap and back shaft
locking screw out two turns.
*
8. Using the the hex on the shaft,
unthread shaft, and remove shaft
and diaphragm.
*
9. Unscrew air cyclinder cap from air
cylinder body.
*
10. Remove piston and spring.
Note: Stroke adjustment ring on
the valve air cylinder assembly is
not removable. If this assembly
requires repair, it must be
returned to EFD.
Valve Disassembly and
Reassembly Procedures
www.efd-inc.com info@efd-inc.com USA 800-556-3484 Europe +44 (0) 1582 666334 Asia +86 (21) 5854 2345
Sales and service of EFD dispensing systems are available worldwide.
Tip adapter
#2186BP
1/4 NPT
O-ring
#72540A
®
(Viton
Fluid body
#72558A-SS
)
Fluid
inlet fitting
#7543BP
O-ring
#72530A
(Buna)
Air cylinder
wall ID
Body cap
#72543-SS
includes O-ring
Sealing head
with screw
#72557
Shoulder
Shaft
#72537
Diaphragm
#72536
Air cylinder
body assembly
#72560A
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