2752X–X
OPERATOR’S MANUAL
RELEASED: 11–13–74
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
REVISED: 11–8–96
(REV.D)
FLUID REGULATOR
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT
.
STANDARD CAPACITY
STAINLESS STEEL
DOWNSTREAM TYPE
MAXIMUM INLET PRESSURE 750 PSI (51.7 BAR)
1/4” INLET/OUTLET
THIS MANUAL COVERS THE FOLLOWING MODELS
5–125 PSI WORKING
RANGE
0–50 PSI WORKING
RANGE
10–250 PSI WORKING
RANGE
0–30 PSI WORKING
RANGE
27520–000
27521–000
27522–000
27520–100
27521–100
27522–100
27520–200
27521–200
27522–200
27521–300
27520–400
27521–400
SERVICE KITS
Use only genuine ARO replacement parts to assure compatible presĆ
sure rating.
OPERATION
To adjust back pressure, turn Y23-72-B screw clockwise with
Y106-105 allen wrench which is furnishedwith unit. To decrease presĆ
sure, turn Y23-72-B screw counterclockwise. (Does not apply to ModĆ
el 27521-300.) To adjust pressure on Model 27521-300, regulate air
pressure to back side of diaphragms using auxiliary port on 104135
cap.
SERVICE HINTS
• If outlet pressure rises or creeps, check (D) seat assembly and(F)
ball for foreign material. If (D) seat assembly and(F) ball appear to
be worn or eroded, they should be replaced. (See Figure 2)
• If material is leaking through bleedhole in 29919 housing andnut
assembly, replace 29000 and90860 diaphragms. (Does not apply
to Model 27521-300.
THE ARO CORPORATION D ONE ARO CENTER
E1994 THE ARO CORPORATION D PRINTED IN U.S.A.
D
BRYAN, OHIO 43506–0151
%
(419) 636–4242
D
FAX (419) 636–2115
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27520-XXX
27521-XXX
27522-XXX
104135
CAP
-54-C (4)
SCREW g
4-56-C (2)
SCREW
g
-10-C (6)
Y154-54-C
CAP SCRE
``B"
``C"
MODEL 27521-300 ONLY
FIGURE 2
0860 DIAPHRAGM
``E"
g
TO
QUE TO 10 + 2 FT LBS)
``F"
46 BASE
``A"
NOTE: INCLU
Y106-105 AL
PARTS LIST
MODEL
#
‘
‘A” PORT
‘B” SPRING
29002 (5–125)
29119 (0–50)
‘
‘C” PLATE
‘
‘D” SEA
T
‘
‘E” ROD
‘
‘F” BALL
BALL MATL.
T’CARBIDE
T’CARBIDE
T’CARBIDE
T’CARBIDE
S’STL
27520–000
27520–100
27520–200
27520–400
27521–000
27521–100
27521–200
27521–300
27521–400
27522–000
27522–100
27522–200
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
1/4 N.P.T.F.
29001
29001
29981
29981
29981
29981
29982
29982
29982
29982
29982
29982
29982
29982
29983
29983
29983
29983
29447
29447
29447
29447
29447
29447
29447
29447
29254
29254
29120 (10–250) 29155
29254
93998 (0–10)
29002 (5–125)
29119 (0–50)
29001
29001
29001
29254
Y16–108
Y16–108
Y16–108
Y16–108
Y16–108
29253
S’STL
29120 (10–250) 29155
–––––––––––– 29001
S’STL
S’STL
93998 (0–10)
29002 (5–125)
29119 (0–50)
29001
29001
29001
S’STL
RUBBER
RUBBER
RUBBER
29253
29120 (10–250) 29155
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29253
2752X-X
PAGE 3 OF 4
PN 97999-674
2752X-X
PAGE 4 OF 4
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