Valve Disassembly and
Reassembly Procedures
Shoulder "A"
Sealing head
#72603 (stainless steel)
#72612 (Teflon
®
-coated
stainless steel)
Body cap
with O-ring
#72602-SS
(stainless steel)
#72610-A
(acetal copolymer)
Shaft
#72604 (stainless steel)
#72611 (Teflon
®
-coated stainless steel)
O-ring only
#72609-A
(acetal copolymer)
#72601-SS
(stainless steel)
Fluid body
Fluid fitting
#72608P
Diaphragm
#72536
1
2
3
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.
*
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 turn shaft,
locking screw out two turns.
*
8. Using the hex on the shaft,
unthread shaft, and remove
shaft and diaphragm.
*
9. Unscrew air cylinder cap from air
cylinder body.
*
10. Remove piston and spring.
Note:
Before reassembling valve,
clean all parts, replace O-rings,
sealing head and diaphragm.
Inspect for damaged threads, piston
pins for straightness and fluid body
seat for pitting.
Reassemble the valve in reverse order
of disassembly. Lubricate parts indi-
cated with Nye Lubricant #865 included
in the General Maintenance Kit.
CAUTION: To prevent damage, the valve
must be disassembled starting at the fluid
outlet end of the valve.
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Sales and service of EFD dispensing systems are available worldwide.
