User Guide

Fluid
inlet fitting
#7543BP
Shaft
#72537
Diaphragm
#72536
Shoulder
Fluid body
#72558A-SS
Sealing head
with screw
#72557
Body cap
#72543-SS
includes O-ring
Tip adapter
#2186BP
1/4 NPT
O-ring
#72540A
(Viton
®
)
Air cylinder
wall ID
Air cylinder
body assembly
#72560A
O-ring
#72530A
(Buna)
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 [e-mail] USA 800-556-3484 Europe [phone] Asia [phone]
Sales and service of EFD dispensing systems are available worldwide.