efd 725hf ユーザーガイド

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.  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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