Ingersoll Rand Marine Sanitation System PD20X XXX XXX B User Manual

OPERATOR’S MANUAL  
PD20X-XXX-XXX-B  
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE  
PE20X-XXX-XXX-B( )  
RELEASED:  
REVISED:  
(REV. 08)  
2-2-05  
1-13-12  
2" DIAPHRAGM PUMP  
1:1 RATIO (METALLIC)  
READ THIS MANUAL CAREFULLY BEFORE INSTALLING,  
OPERATING OR SERVICING THIS EQUIPMENT.  
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference.  
SERVICE KITS  
Refer to Model Description Chart to match the pump material op-  
tions.  
637309-XX for fluid section repair (see page 4). NOTE: This kit also  
contains several air motor seals which will need to be replaced.  
637374-X major air valve assembly (see page 7).  
637421 for air section repair (see page 6).  
PUMP DATA  
Figure 1  
Models. . . . . . . . . . . . . . . . . see Model Description Chart for “-XXX”  
Pump Type. . . . . . . . . . . . . Metallic Air Operated Double Diaphragm  
Material. . . . . . . . . . . . . . . . see Model Description Chart  
Weight . . PX20A-XAX-XXX-B( ) . . . . . . . . . . 91.4 lbs (41.5 kgs)  
PX20A-XCX-XXX-B( ) . . . . . . . . . . 147.4 lbs (66.9 kgs)  
MODEL DESCRIPTION CHART  
P X 20 X - X X X - X X X - B (0L)  
PX20A-AHX-XXX-B( ), -BHX . . . 155.0 lbs (70.3 kgs)  
Electronic Interface  
PX20A-ASX-XXX-B( ), -BSX . . . . 149.8 lbs (68.0 kgs)  
D - None  
PX20A-FHX-XXX-B( )  
. . . . 169.4 lbs (76.8 kgs)  
. . . . .  
E
-
Available  
PX20A-FSX-XXX-B( ) . . . . . . . . . . . .162.0 lbs (73.5 kgs)  
(add 28.9 lbs [13.1 kg] for stainless steel air motor section)  
Maximum Air Inlet Pressure . . . . . . . . . . . 120 p.s.i.g. (8.3 bar)  
Maximum Material Inlet Pressure. . . . . . 10 p.s.i.g. (0.69 bar)  
Maximum Outlet Pressure . . . . . . . . . . . . . 120 p.s.i.g. (8.3 bar)  
Maximum Flow Rate . . . . . . . . . . . . . . . . . . . 172 g.p.m. (651 l.p.m.)  
Displacement / Cycle @ 100 p.s.i.g. . . . . 1.4 gal. (5.3 lit.)  
Maximum Particle Size . . . . . . . . . . . . . . . . 1/4dia. (6.4 mm)  
Maximum Temperature Limits (diaphragm / ball / seal material)  
E.P.R. / EPDM . . . . . . . . . . . . . . . . . . . -60° to 280° F (-51° to 138° C)  
Hytrel® . . . . . . . . . . . . . . . . . . . . . . . . . -20° to 150° F (-29° to 66° C)  
Kynar® PVDF . . . . . . . . . . . . . . . . . . . 10° to 200° F (-12° to 93° C)  
Nitrile . . . . . . . . . . . . . . . . . . . . . . . . . . 10° to 180° F (-12° to 82° C)  
Santoprene® . . . . . . . . . . . . . . . . . . . -40° to 225° F (-40° to 107° C)  
PTFE . . . . . . . . . . . . . . . . . . . . . . . . . . . 40° to 225° F (4° to 107° C)  
Viton®. . . . . . . . . . . . . . . . . . . . . . . . . . -40° to 350° F (-40° to 177° C)  
Dimensional Data. . . . . . . . . . . . . . . . . . . . . . see page 8  
Air Motor / Air Cap Material  
A - Aluminum / Aluminum  
S
-
Stainless steel / Stainless steel  
Fluid Connection  
A - 2 - 11-1/2 N.P.T.F. - 1  
B - Rp 2 (2 - 11 BSP parallel)  
F
-
2“ A.N.S.I. / DIN Flange  
Fluid Cap & Manifold Material  
A - Aluminum  
C - Cast Iron  
H - Hastelloy®- C  
Stainless steel  
S
-
Hardware Material  
P - Carbon steel  
S
-
Stainless steel  
Seat Material  
A - Santoprene  
C - Hytrel  
H - Hard 440 stainless steel  
K - Kynar PVDF  
Noise Level @ 70 p.s.i., 60 c.p.m. . . . . . . 85.0 db(A)  
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d
E
F
-
-
Carbon steel  
Aluminum  
L
S
-
-
Hastelloy - C  
316 Stainless steel  
G - Nitrile  
Tested with 67263 muffler assembly installed.  
c
d
The pump sound pressure levels published here have been updated to  
an Equivalent Continuous Sound Level (LAeq) to meet the intent of ANSI  
S1.13-1971, CAGI-PNEUROP S5.1 using four microphone locations.  
Ball Material  
A - Santoprene  
C - Hytrel  
S
T
-
-
316 Stainless steel  
PTFE  
G - Nitrile  
V - Viton  
NOTICE: All possible options are shown in the chart, however, certain  
combinations may not be recommended, consult a representative or  
the factory if you have questions concerning availability.  
Diaphragm Material  
A - Santoprene  
C - Hytrel  
M - Medical grade Santoprene  
T
-
PTFE / Santoprene  
G - Nitrile  
V - Viton  
Accessory  
0L- Diaphragm Failure Detector  
Fluid Section Service Kit Selection  
PD20X - XXX - X X X - B( )  
637309 - X X  
Example: Model #PD20A-ACS-SAA-B  
Fluid Section Service Kit # 637309-AA  
Ball  
Diaphragm  
INGERSOLL RAND COMPANY LTD  
209 NORTH MAIN STREET – BRYAN, OHIO 43506  
© 2012  
CCN 15226509  
(800) 495-0276 FAX (800) 892-6276  
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GENERAL DESCRIPTION  
PARTS AND SERVICE KITS  
The ARO diaphragm pump offers high volume delivery even at low  
air pressure and a broad range of material compatibility options are  
available. Refer to the model and option chart. ARO pumps feature  
stall resistant design, modular air motor / fluid sections.  
Air operated double diaphragm pumps utilize a pressure differen-  
tial in the air chambers to alternately create suction and a positive  
fluid pressure in the fluid chambers, valve checks insure a positive  
flow of fluid.  
Refer to the part views and descriptions as provided on pages 4  
through 7 for parts identification and service kit information.  
Certain ARO “Smart Parts” are indicated which should be avail-  
able for fast repair and reduction of down time.  
Service kits are divided to service two separate diaphragm  
pump functions: 1. AIR SECTION, 2. FLUID SECTION. The Fluid  
Section is divided further to match typical part Material Op-  
tions.  
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Pump cycling will begin as air pressure is applied and will continue  
to pump and keep up with the demand. It will build and maintain  
line pressure and will stop cycling once maximum line pressure is  
reached (dispensing device closed) and will resume pumping as  
needed.  
MAINTENANCE  
Provide a clean work surface to protect sensitive internal mov-  
ing parts from contamination from dirt and foreign matter dur-  
ing service disassembly and reassembly.  
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Keep good records of service activity and include the pump in  
preventive maintenance program.  
Before disassembling, empty captured material in the outlet  
manifold by turning the pump upside down to drain material  
from the pump.  
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AIR AND LUBE REQUIREMENTS  
EXCESSIVE AIR PRESSURE. Can cause pump dam-  
WARNING  
age, personal injury or property damage.  
A filter capable of filtering out particles larger than 50 microns  
should be used on the air supply. There is no lubrication re-  
quired other than the “O” ring lubricant which is applied during  
assembly or repair.  
If lubricated air is present, make sure that it is compatible with  
the “Orings and seals in the air motor section of the pump.  
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FLUID SECTION DISASSEMBLY  
1. Remove (61) outlet manifold and (60) inlet manifold.  
2. Remove (22) balls, (19) “Orings (if applicable) and (21) seats.  
3. Remove (15) fluid caps.  
NOTE: Only PTFE diaphragm models use a primary diaphragm (7)  
and a backup diaphragm (8). Refer to the auxiliary view in the Fluid  
Section illustration.  
4. Remove the (6) diaphragm washer, (7) or 7 / 8) diaphragms and  
(5) backup washer.  
NOTE: Do not scratch or mar the surface of (1) diaphragm rod.  
OPERATING INSTRUCTIONS  
Always flush the pump with a solvent compatible with the ma-  
terial being pumped if the material being pumped is subject to  
“setting upwhen not in use for a period of time.  
Disconnect the air supply from the pump if it is to be inactive  
for a few hours.  
The outlet material volume is governed not only by the air sup-  
ply, but also by the material supply available at the inlet. The  
material supply tubing should not be too small or restrictive.  
Be sure not to use hose which might collapse.  
When the diaphragm pump is used in a forced-feed (flooded  
inlet) situation, it is recommended that a “check valve” be in-  
stalled at the air inlet.  
Secure the diaphragm pump legs to a suitable surface to insure  
against damage by vibration.  
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FLUID SECTION REASSEMBLY  
SERVICE NOTE: ARO pn 204214-T diaphragm assembly tool is rec-  
ommended for use when reassembling the pump.  
Reassemble in reverse order. Refer to the torque requirements  
on page 5.  
Clean and inspect all parts. Replace worn or damaged parts  
with new parts as required.  
Lubricate (1) diaphragm rod and (144) “Ucups with Lubriplate®  
FML-2 grease (94276 grease packet is included in service kit).  
For models with PTFE diaphragms: Item (8) Santoprene dia-  
phragm is installed with the side marked “AIR SIDE” towards the  
pump center body. Install the (7) PTFE diaphragm with the side  
marked “FLUID SIDEtowards the (15) fluid cap.  
Re-check torque settings after the pump has been re-started  
and run a while.  
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Hytrel® and Viton® are registered trademarks of the DuPont Company Loctite® is a registered trademark of Henkel Loctite Corporation Kynar® is a registered trademark of Arkema Inc.  
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Santoprene® is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. ARO® is a registered trademark of Ingersoll-Rand Company  
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Lubriplate® is a registered trademark of Lubriplate Division (Fiske Brothers Refining Company) 262™, 271™ and 572™ are trademarks of Henkel Loctite Corporation  
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PD20X-XXX-XXX-B (en)  
Page 3 of 8  
 
PARTS LIST / PX20X-XXX-XXX-B( ) FLUID SECTION  
637309-XX Fluid section service kit includes: Balls (see Ball Option, refer to -XX in chart below), Diaphragms (see Diaphragm Option, refer to -XX in chart  
below) and items 19, 70, 144, 175 (listed below) and 174 and 94276 Lubriplate FML-2 grease (page 6).  
n
SEAT OPTIONS PX20X-XXX-XXX-B( )  
BALL OPTIONS PX20X-XXX-XXX-B( )  
(2-1/2” diameter)  
“22”  
“21”  
n
-XXX Seat  
Qty Mtl  
(4) [Sp]  
-XXX Sitz  
Qty Mtl  
(4) [SH]  
-XXX Ball  
Qty Mtl  
(4) [Sp]  
-XXX Ball  
Qty Mtl  
(4) [SS]  
-AXX 94328-A  
-CXX 94328-C  
-EXX 95677  
-FXX 95673  
-GXX 94328-G  
-HXX 94354  
-KXX 94477-K  
-LXX 95639  
-SXX 94353  
-XAX 93358-A  
-XCX 93358-C  
-XGX 93358-2  
-XSX 94805  
-XTX 93358-4  
-XVX 93358-3  
(4)  
(4)  
(4)  
(4)  
[H]  
[C]  
[A]  
[B]  
(4)  
[K]  
(4)  
(4)  
[H]  
[B]  
(4)  
(4)  
[T]  
[V]  
(4) [Ha]  
(4) [SS]  
NOTE: Seat options -AXX, -CXX and -GXX do not require item 19 "O" ring.  
MATERIAL CODE  
[A] = Aluminum  
[B] = Nitrile  
[C] = Carbon Steel  
[Co] = Copper  
DIAPHRAGM OPTIONS PX20X-XXX-XXX-B( )  
(1/8” x 3-5/8” o.d.)  
“19”  
Service kit  
“7”  
“8”  
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n
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-XX = (Ball)  
[CI] = Cast Iron  
[E] = E.P.R.  
[H] = Hytrel  
-XXX  
Diaphragm  
Qty  
Mtl Diaphragm  
Qty  
Mtl “O” Ring  
Qty  
Mtl  
-XX = (Diaphragm)  
-XXA 637309-XA  
-XXC 637309-XC  
-XXG 637309-XG  
-XXM 637309-XM  
-XXT 637309-XT  
-XXV 637309-XV  
94329-A  
94329-C  
94329-G  
94329-M  
94355-T  
95344  
(2)  
(2)  
(2)  
[Sp] - - - - -  
[H] - - - - -  
[B] - - - - -  
- - -  
- - -  
- - -  
- - -  
(2)  
- - - 94356  
(4)  
(4)  
(4)  
(4)  
(4)  
(4)  
[E]  
[V]  
[B]  
[T]  
[T]  
[V]  
[Ha] = Hastelloy - C  
[K] = Kynar PVDF  
[MSp] = Medical grade Santo-  
prene  
[SH] = Hard Stainless Steel  
[Sp] = Santoprene  
[SS] = Stainless Steel  
[T] = PTFE  
- - - Y327-237  
- - - Y325-237  
- - - Y328-237  
[Sp] Y328-237  
- - - Y327-237  
(2) [MSp] - - - - -  
(2)  
(2)  
[T] 94330-A  
[V] - - - - -  
- - -  
[V] = Viton  
CENTER SECTION PART OPTIONS PX20X-XXX-XXX-B( )  
PD20A-XXX-XXX-B( ) PE20A-XXX-XXX-B( ) PD20S-XXX-XXX-B( ) PE20S-XXX-XXX-B( )  
(size)  
Item  
Description  
Backup Washer  
Qty Part No.  
(2) 96503  
(1) 94324-1  
(1) 94324-2  
(1) - - - - -  
Mtl Part No.  
[A] 96503  
Mtl Part No.  
[A] 94357-2  
[A] 94349-1  
[A] 94349-2  
[SS] - - - - -  
[SS] Y17-51-S  
[C] 96656  
[B] - - - - -  
Mtl Part No.  
[SS] 94357-2  
[SS] 94349-1  
[SS] 94349-2  
- - - Y17-50-S  
[SS] Y17-51-S  
[SS] 96656  
- - - - - - - -  
[B] Y325-118  
[SS] Y178-56-S  
Mtl  
[SS]  
[SS]  
[SS]  
[SS]  
[SS]  
[SS]  
- - -  
5
68 Air Cap  
69 Air Cap  
76 Pipe Plug  
126 Pipe Plug  
[A] 94715-1  
[A] 94715-2  
- - - Y17-50-S  
- - - Y17-51-S  
[C] 94531  
(1/8 - 27 N.P.T. x 0.27”)  
(1/4 - 18 N.P.T. x 7/16”)  
(2) - - - - -  
(M10 x 1.5 - 6g x 120 mm)  
(3/32” x 1” o.d.)  
131 Screw  
(4) 94531  
(2) Y325-117  
(2) - - - - -  
“O” Ring  
[B] Y325-117  
- - - - - - - -  
175  
no  
no  
(3/32” x 1-1/16” o.d.)  
- - - Y325-118  
- - - Y178-56-S  
[B]  
(5/32” o.d. x 3/4” long)  
181 Roll Pin  
(4) - - - - -  
- - - - - - - -  
[SS]  
MANIFOLD THREAD / FLUID CAP MATERIAL OPTIONS PX20X-XXX-XXX-B( )  
PX20X-XAX-  
PX20X-XCX-  
PX20X-XHX-  
PX20X-FHX-  
PX20X-XSX-  
PX20X-FSX-  
Mtl Part No. Mtl  
[SS] 94357-2 [SS]  
(size)  
Item Description  
6
9
14 Screw  
15 Fluid Cap  
Qty Part No. Mtl Part No.  
Mtl Part No.  
[SS] 94357-3  
[SS] 95683  
Mtl Part No. Mtl Part No.  
[Ha] 94357-3 [Ha] 94357-2  
Diaphragm Washer  
Washer  
(2) 96503  
(2) 93065  
[A] 94357-2  
[SS] 93065  
[Ha] 95683  
[Ha] 95682  
[Ha] 95679  
[Ha] 96341  
[Ha] 96342  
- - - - - - - -  
- - - - - - - -  
[Ha] 93065  
[Ha] Y5-111-T [SS] Y5-111-T [SS]  
[Ha] 95570  
[Ha] 95510-[  
[Ha] 95511-[  
- - - - - - - -  
[SS] 93065  
[SS]  
(5/8” - 18 x 2-1/2”)  
(2) Y5-111-T [SS] Y5-111-T [SS] 95682  
(2) 94325  
(1) 94327-[  
(1) 94326-[  
[A] 94346  
[A] 94347-[  
[A] 94348-[  
[CI] 95679  
[CI] 95680-[  
[CI] 95681-[  
[C] - - - - -  
[SS] 95570  
[SS] 95512  
[SS] 95513  
- - - - - - - -  
- - - - - - - -  
[SS]  
[SS]  
[SS]  
- - -  
60 Inlet Manifold  
61 Outlet Manifold  
p
]
]
p
]
]
p
]
]
q
q
p
]
]
q
q
p
p
p
p
(2 - 11-1/2 N.P.T.)  
Pipe Plug  
(2) Y17-128  
(2) 94439-2  
[A] Y17-28-C  
[A] 94439-1  
63  
R 2 (2 - 11 BSP, taper)  
[C] - - - - -  
- - - - - - - -  
- - -  
EXTERNAL HARDWARE OPTION PX20X-XXX-XXX-B( )  
PX20X-XXP-XXX-B( ) PX20X-XXS-XXX-B( )  
(size)  
Item  
26 Screw  
27 Screw  
Description  
Qty Part No.  
(8) 94409-1  
(16) 94990-1  
(16) 94992-1  
Mtl Part No.  
[C] 94409-2  
[C] 94990  
[C] 94992  
Mtl  
[SS]  
[SS]  
[SS]  
(M10 x 1.5 - 6g x 34 mm)  
(M10 x 1.5 - 6g x 45 mm)  
(M10 x 1.5 - 6h)  
29 Nut  
COMMON PARTS  
(size)  
(size)  
Item  
Description  
Rod  
Qty Part No.  
(1) 94358  
(1) 93004  
(2) 94100  
Mtl  
Item  
Description  
Qty Part No.  
(2) Y186-51  
(4) 94098  
Mtl  
[B]  
[Co]  
(3/16” x 1-3/8” o.d.)  
1
[C]  
[Co]  
[B]  
144 “U” Cup  
180 Gasket  
no  
o
(see page 7)  
(0.406” i.d. x 0.031” thick)  
43 Ground Lug  
70 Gasket  
no  
Air motor kit parts, see pages 6 and 7.  
For N.P.T.F. thread models (PX20X-AXX-XXX-B) use "-1".  
For BSP thread models (PX20X-BXX-XXX-B) use "-2".  
Flange models  
qꢁ  
o
p
“Smart Parts, keep these items on hand in addition to the service kits for fast  
repair and reduction of down time.  
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Page 4 of 8  
PD20X-XXX-XXX-B (en)  
 
PARTS LIST / PX20X-XXX-XXX-B( ) FLUID SECTION  
COLOR CODE  
3
2
1
4
Diaphragm  
Color  
Ball  
Material  
Color  
Hytrel  
Nitrile  
Cream  
Black  
Tan  
Cream  
Red (•)  
Tan  
5
7
8
6
Santoprene  
Santoprene  
(backup)  
PTFE  
Green  
N / A  
61 (PX20X-FXX-XXX-B)  
White  
White  
Viton  
Yellow (-) Yellow (•)  
(-) Stripe  
(•) Dot  
FOR THE AIR MO-  
TOR SECTION, SEE  
PAGES 6 & 7.  
61 (PX20X-AXX-XXX-B  
Torque Sequence  
PX20X-BXX-XXX-B)  
26  
68 181  
175  
70  
76  
144  
70  
1
5
7
6
14 ꢇ  
22  
21  
19 ꢃꢄ  
27 ꢂ  
126  
144  
175  
15  
29  
69  
180  
131 ꢆ  
9
60 (PX20X-AXX-XXX-B  
PX20X-BXX-XXX-B)  
63  
22  
26 ꢂ  
21  
60 (PX20X-FXX-XXX-B)  
19 ꢃꢄ  
Figure 2  
ASSEMBLY TORQUE REQUIREMENTS  
NOTE: DO NOT OVERTIGHTEN FASTENERS.  
ALL FASTENERS ARE METRIC.  
)
(
(14) Diaphragm screw, 65 - 70 ft lbs (88.1 - 94.9 Nm).  
(26) Screw, 30 - 40 ft lbs (40.7 - 54.2 Nm).  
(27) Screw, 30 - 40 ft lbs (40.7 - 54.2 Nm).  
(131) Screw, 35 - 40 ft lbs (47.5 - 54.2 Nm).  
View for PX20X-XXX-XXT-B (PTFE diaphragm) con-  
figuration only.  
LUBRICATION / SEALANTS  
Apply Lubriplate FML-2 grease to all “O” rings, “U” cups and mating parts.  
Apply Loctite® 271™ to threads.  
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Apply anti-seize compound to threads and bolt and nut flange heads  
which contact pump case when using stainless steel fasteners.  
Apply Loctite 262™ to threads at assembly.  
f
g
h
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Apply PTFE tape to threads.  
Apply Loctite 572™ to threads.  
(Santoprene)  
(PTFE)  
8
Not used with PX20X-XXX-AXX-B, -CXX and -GXX.  
Not used with PX20X-XXX-XXX-B0L.  
7
Note: Lubriplate FML-2 is a white food grade petroleum grease.  
PD20X-XXX-XXX-B (en)  
Page 5 of 8  
 
PARTS LIST / PX20X-XXX-XXX-B( ) AIR MOTOR SECTION  
Indicates parts included in 637421 air section service kit shown below and items (70), (144), (175) and (180) shown on page 4.  
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AIR MOTOR PARTS  
(size)  
(size)  
Item  
101  
Description  
Qty Part No.  
(1) 94028  
(1) 94109  
(1) 94092  
(4) 95887  
(1) 95651  
(2) 94083  
(2) 94084  
(1) 94860  
(2) Y29-42-S  
(1) 94099  
Mtl  
Item  
Description  
Qty Part No.  
(1) 94026  
(1) 67164  
(2) 94433  
(1) Y240-9  
(1) 94081  
(1) Y325-119  
(1) Y325-22  
(2) Y325-26  
(2) Y325-202  
(2) 94102  
(1) 95666  
(1) 95665  
(1) 67213  
(1) 96336  
(1) 96338  
(2) 95991  
(1) 96344  
(1) Y325-5  
(1) Y325-204  
(1) Y325-208  
Mtl  
[B]  
[D]  
[U]  
[B]  
[Br]  
[B]  
[B]  
[B]  
[B]  
[Sp]  
[B]  
[B]  
(PX20A-XXX-XXX-B)  
(PX20S-XXX-XXX-B)  
Center Body  
[A]  
166 Track Gasket  
167 Pilot Piston  
to  
o
(includes 168 and 169)  
[SS]  
[D]  
(3/32” x 5/8” o.d.)  
(1/8” x 7/8” o.d.)  
103 Bushing  
168 "O” Ring  
(M6 x 1 - 6g x 20 mm)  
105 Screw  
[SS]  
[D]  
169 “U” Cup  
111 Spool  
170 Piston Sleeve  
(0.250” x 2.276” long)  
(3/32” x 1-1/8” o.d.)  
118 Actuator Pin  
121 Sleeve  
[SS]  
[D]  
171 “O” Ring  
172 “O” Ring  
173 “O” Ring  
174 “O” Ring  
o
o
(1/16” x 1-1/8” o.d.)  
(1/16” x 1-3/8” o.d.)  
(1/8” x 1/2” o.d.)  
(check valve)  
(1-1/2 - 11-1/2 N.P.T.)  
127 90° St. Elbow  
[C / I]  
[SS]  
[B]  
o
(1/4” - 20 x 1/4”)  
128 Set Screw  
132 Gasket  
no  
o
176 Diaphragm  
199 Track Gasket  
200 Gasket  
o
(1/4”) (PX20A-XXX-XXX-B)  
(PX20S-XXX-XXX-B)  
Lockwasher  
(3) Y117-416-C [C]  
133  
o
(3) Y14-416-T  
(4) 96358  
[SS]  
[SS]  
[A]  
o
(M6 x 1 - 6g x 30 mm)  
(includes item 127)  
134 Screw  
201 Muffler Kit  
Adapter Plate  
233  
(PD20A-XXX-XXX-B)  
(PD20S-XXX-XXX-B)  
(PE20A-XXX-XXX-B)  
(PE20S-XXX-XXX-B)  
(PX20A-XXX-XXX-B)  
(PX20S-XXX-XXX-B)  
Valve Housing  
(1) 96334-1  
(1) 96337-1  
(1) 96334-2  
(1) 96337-2  
(1) 96335  
[A]  
[SS]  
[SS]  
[B]  
135  
[SS]  
[A]  
(M6 x 1 - 6g x 16 mm)  
240 Screw  
[SS]  
[A]  
241 Track Gasket  
o
o
o
o
(PX20A-XXX-XXX-B)  
(1/16” x 7/32” o.d.)  
Plug  
242 “O” Ring  
243 “O” Ring  
244 “O” Ring  
[B]  
136  
(PX20S-XXX-XXX-B)  
(1/16” x 2” o.d.)  
(1/8” x 5/8” o.d.)  
(1/8” x 7/8” o.d.)  
(1) 96339  
[SS]  
[B]  
[B]  
137 “O” Ring  
138 “U” Cup  
139 “U” Cup  
(1) Y325-32  
(1) 95966  
[B]  
o
o
o
(3/16” x 1.792” o.d.)  
(3/16” x 1-1/4” o.d.)  
[B]  
(1) Y186-50  
(1) 95650  
[B]  
Lubriplate FML-2 grease  
(1) 94276  
637308  
n o  
140 Valve Insert  
141 Valve Plate  
(Ck)  
(Ck)  
[B]  
Lubriplate Grease Packets (10)  
(1) 95659  
Items included in fluid section service kit, see pages 4 and 5.  
Used on models PX20S-XXX-XXX-B( ) only.  
Used on models PX20A-XXX-XXX-B( ) only.  
n
s
t
(3/32” x 1-1/16” o.d.)  
146 “O” Ring  
147 “O” Ring  
(1) Y325-118  
(2) Y325-202  
so  
so  
(1/8” x 1/2” o.d.)  
[B]  
MATERIAL CODE  
3. Install new (168) “Orings and (169) seal - Note the lip direction.  
Lubricate and replace (167) pilot piston.  
[A] = Aluminum  
[B] = Nitrile  
[Br] = Brass  
[C] = Carbon Steel  
[Ck] = Ceramic  
[D] = Acetal  
[I] = Iron  
[Sp] = Santoprene  
[SS] = Stainless Steel  
[U] = Polyurethane  
4. Reassemble remaining parts. Replace (173 and 174) “Orings.  
MAJOR VALVE DISASSEMBLY  
1. Remove (135) valve block and (233) adapter plate, exposing  
(132 and 166) gaskets and (176) checks.  
AIR MOTOR SECTION SERVICE  
Service is divided into two parts - 1. Pilot Valve, 2. Major Valve.  
GENERAL REASSEMBLY NOTES:  
2. Remove (233) adapter plate, releasing (140) valve insert, (141)  
valve plate, (199, 200 and 241) gaskets and (243 and 244) “O”  
rings.  
Air Motor Section service is continued from Fluid Section repair.  
y
Inspect and replace old parts with new parts as necessary. Look  
3. Remove (136) plug and (137) “Oring, releasing (111) spool.  
y
for deep scratches on metallic surfaces, and nicks or cuts in “O”  
rings.  
MAJOR VALVE REASSEMBLY  
Take precautions to prevent cutting “Orings upon installation.  
Lubricate “Orings with Lubriplate FML-2 grease.  
Do not over-tighten fasteners. Refer to torque specification  
block on view.  
Re-torque fasteners following restart.  
SERVICE TOOLS - To aid in the installation of (168) “Orings onto  
the (167) pilot piston, use tool # 204130-T, available from ARO.  
y
y
y
1. Install new (138 and 139) “U” cups on (111) spool - LIPS MUST  
FACE EACH OTHER.  
2. Insert (111) spool into (135) valve block.  
3. Install (137 and 242) “O” rings on (136) plug and assemble plug  
to (135) valve block, securing with (105) screws.  
4. Install (140) valve insert, (141) valve plate, (199) gasket and (243  
and 244)O“ rings into (135) valve block. NOTE: Assemble (140)  
valve insert with “dished” side toward (141) valve plate. Assem-  
ble (141) valve plate with part number identification toward  
(140) valve insert.  
y
y
PILOT VALVE DISASSEMBLY  
1. A light tap on (118) actuator pin should expose the opposite  
(121) sleeve, (167) pilot piston and other parts.  
2. Remove (170) sleeve. Inspect inner bore of sleeve for damage.  
5. Assemble (200 and 241) gaskets and (233) adapter plate to (135)  
valve block, securing with (240) screws.  
6. Assemble (132 and 166) gaskets and (176) checks to (101) cen-  
ter body.  
7. Assemble (135) valve block and components to (101) center  
body, securing with (134) screws.  
PILOT VALVE REASSEMBLY  
1. Clean and lubricate parts not being replaced from service kit.  
2. Install new (171 and 172) “Orings. Replace (170) sleeve.  
Page 6 of 8  
PD20X-XXX-XXX-B (en)  
 
PARTS LIST / PX20X-XXX-XXX-B( ) AIR MOTOR SECTION  
Substitute these “O“ rings for  
k
PILOT VALVE  
PART GROUP  
(166) gasket on models PX20S-  
XXX-XXX-B( ).  
118  
169 168  
147  
146  
172  
174  
121  
173  
167  
171  
170  
173  
121  
118  
174  
140 199  
244  
243  
233 132  
166 ꢃꢈ  
135  
133  
103  
101  
134  
43  
141  
241  
200  
128  
240 ꢁꢂ 176  
138  
Optional 94117 Muffler  
111  
139  
242  
128  
137  
136  
201  
127  
105 ꢁꢂ  
MAJOR VALVE  
Figure 3  
ASSEMBLY TORQUE REQUIREMENTS  
NOTE: DO NOT OVERTIGHTEN FASTENERS.  
ALL FASTENERS ARE METRIC.  
LUBRICATION / SEALANTS  
)
(
Apply Lubriplate FML-2 grease to all “O” rings, “U” cups and mat-  
ing parts.  
c
Apply Loctite 271 to threads.  
d
e
(105) Screw, 40 - 50 in. lbs (4.5 - 5.6 Nm).  
(134) Screw, 40 - 50 in. lbs (4.5 - 5.6 Nm).  
(240) Screw, 40 - 50 in. lbs (4.5 - 5.6 Nm).  
Apply anti-seize compound to threads and bolt and nut flange  
heads which contact pump case when using stainless steel fas-  
teners.  
A replacement major valve service assembly is available separately, which includes the following:  
637374-2 for models PD20A-XXX-XXX-B: 105 (4), 111, 128 (2), 132, 133 (3), 134 (4), 135, 136, 137, 138, 139, 140, 141, 166, 176 (2), 199, 200, 233, 240 (2),  
241, 242, 243 and 244.  
637374-3 for models PE20A-XXX-XXX-B: 76, 105 (4), 111, 128 (2), 132, 133 (3), 134 (4), 135, 136, 137, 138, 139, 140, 141, 166, 176 (2), 199, 200, 233, 240 (2),  
241, 242, 243 and 244.  
637374-4 for models PD20S-XXX-XXX-B: 105 (4), 111, 128 (2), 132, 133 (3), 134 (4), 135, 136, 137, 138, 139, 140, 141, 146, 147, 176 (2), 199, 200, 233, 240 (2),  
241, 242, 243 and 244.  
637374-5 for models PE20S-XXX-XXX-B: 76, 105 (4), 111, 128 (2), 132, 133 (3), 134 (4), 135, 136, 137, 138, 139, 140, 141, 146, 147, 176 (2), 199, 200, 233, 240  
(2), 241, 242, 243 and 244.  
PD20X-XXX-XXX-B (en)  
Page 7 of 8  
 
TROUBLE SHOOTING  
Product discharged from exhaust outlet.  
Low output volume, erratic flow or no flow.  
Check for diaphragm rupture.  
Check air supply.  
y
y
y
y
y
y
y
Check tightness of (14) diaphragm screw.  
Check for plugged outlet hose.  
Check for kinked (restrictive) outlet material hose.  
Check for kinked (restrictive) or collapsed inlet material hose.  
Check for pump cavitation - suction pipe should be sized at  
least as large as the inlet thread diameter of the pump for  
proper flow if high viscosity fluids are being pumped. Suction  
hose must be a non-collapsing type, capable of pulling a high  
volume.  
Air bubbles in product discharge.  
Check connections of suction plumbing.  
Check “O” rings between intake manifold and inlet side fluid  
caps.  
y
y
Check tightness of (14) diaphragm screw.  
y
Motor blows air or stalls.  
Check all joints on the inlet manifolds and suction connections.  
These must be air tight.  
Inspect the pump for solid objects lodged in the diaphragm  
chamber or the seat area.  
y
y
Check (176) check valve for damage or wear.  
Check for restrictions in valve / exhaust.  
y
y
DIMENSIONAL DATA  
Dimensions shown are for reference only, they are displayed in inches and millimeters (mm).  
P
E
l
Material outlet  
(PX20X-AXX-XXX-B) T  
(PX20X-BXX-XXX-B) U  
L
F
S (Material outlet)  
(PX20X-FXX-XXX-B)  
L
G
B
N (Bolt circle)  
Air Inlet  
3/4 - 14 N.P.T.F. - 1  
Q
B
R
D
D
H
K
Dotted lines show optional  
67263 muffler assembly.  
M
J
S (Material inlet)  
C
(PX20X-FXX-XXX-B)  
A
l
Material inlet  
(PX20X-AXX-XXX-B) T  
Exhaust port 1-1/2 - 11-1/2 N.P.T.  
Figure 4  
(PX20X-BXX-XXX-B) U  
DIMENSIONS  
A - see below  
F
- 12(304.8 mm)  
L
- see below  
R - see below  
B - 24-3/4(628.7 mm)  
C - 10-1/16(255.6 mm)  
D - see below  
G - 26-1/4” (666.8 mm)  
H - 9-1/16” (230.2 mm)  
M - 5/8” (15.9 mm)  
S
T
- 2A.N.S.I. / DIN Flange  
- 2 - 11-1/2 N.P.T.F. - 1  
N - 4.834(122.8 mm)  
P - 21-5/8” (548 mm)  
Q - 27-7/8” (708.0 mm)  
J
- 10-1/16(255.6 mm)  
U - Rp 2 (2 - 11 BSP, parallel)  
E
- 16-3/16(411.2 mm)  
K - 9/16” (14.3 mm)  
l Side Discharge Ports are not available on PX20X-XSX-X-B Models.  
“A”  
“D”  
L”  
“R”  
PX20X-XAX-XXX-B( )  
PX20X-XCX-XXX-B( )  
PX20X-AHX-XXX-B( )  
PX20X-BHX-XXX-B( )  
PX20X-ASX-XXX-B( )  
PX20X-BSX-XXX-B( )  
PX20X-FHX-XXX-B( )  
PX20X-FSX-XXX-B( )  
19-3/4(501.7 mm)  
19-3/4(501.7 mm)  
19-1/4(488.7 mm)  
19-1/4(488.7 mm)  
19-3/8(492.1 mm)  
19-3/8(492.1 mm)  
19-1/4(488.7 mm)  
19-3/8(492.1 mm)  
1-7/8(47.6 mm)  
1-7/8(47.6 mm)  
2-1/2(63.5 mm)  
2-1/2(63.5 mm)  
2-1/2(63.5 mm)  
2-1/2(63.5 mm)  
2-1/2(63.5 mm)  
2-1/2(63.5 mm)  
2(50.8 mm)  
2(50.8 mm)  
12-15/16(328.6 mm)  
12-15/16(328.6 mm)  
13-9/16(344.5 mm)  
13-9/16(344.5 mm)  
13-9/16(344.5 mm)  
13-9/16(344.5 mm)  
13-9/16(344.5 mm)  
13-9/16(344.5 mm)  
2-3/32(53.0 mm)  
2-3/32(53.0 mm)  
2-3/32(53.2 mm)  
2-3/32(53.2 mm)  
3-1/4(82.6 mm)  
3-1/4(82.6 mm)  
PN 97999-1108  
PD20X-XXX-XXX-B (en)  
Page 8 of 8  
 

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