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INGERSOLL RAND COMPANY INC

209 NORTH MAIN STREET – BRYAN, OHIO 43506

 (800) 495-0276 

 FAX (800) 892-6276 

© 2020 

CCN 15227663

arozone.com

OPERATOR’S MANUAL 

PF20X-XXX-XXX-B

INCLUDING: OPERATION, INSTALLATION AND MAINTENANCE

RELEASED: 2-10-05

REVISED: 8-4-20

(REV: L)

2” DIAPHRAGM PUMP

1:1 RATIO FLAP VALVE (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.

Figure 1

SERVICE KITS

Refer to Model Description Chart to match the pump materi-

al options.

637310-XX 

for fluid section repair (see page 3).

637374-X 

major air valve assembly (see page 7).

 

NOTE:

 This kit also contains several replacement air motor 

seals.

637421 

for air section repair (see page 6).

PUMP DATA

Models

  . . . . . . . . . . . .see Model Description Chart for “-XXX”

Pump Type

  . . . . . . . .Metallic,  Air  Operated,  Double  Diaphragm,                 

Flap Valve

Material

  . . . . . . . . . . .see Model Description Chart

Weight

  . . .   PF20A-XAX-SXX-B . . . . . . 97.3 lbs (44.2 kgs)

                       PF20A-XCX-SXX-B . . . . . . 166.2 lbs (75.4 kgs)

                       PF20A-ASX-SXX-B . . . . . . 166.0 lbs (75.3 kgs)

                       PF20A-BSX-SXX-B . . . . . . 166.0 lbs (75.3 kgs)

                       PF20A-FSX-SXX-B . . . . . . 177.1 lbs (80.3 kgs)

                                (add 28.9 lbs [13.1 kgs] for stainless steel air motor section)

Maximum Air Inlet Pressure

  . . . . . . . .  120 psig (8.3 bar)

Maximum Material Inlet Pressure.

  . .  10 psig (0.69 bar)

Maximum Outlet Pressure

  . . . . . . . . . .  120 psig (8.3 bar)

Maximum Flow Rate

  . . . . . . . . . . . . . . . . . . . .  

172 gpm (651 lpm)

Displacement / Cycle @ 100 psig

  . . . .  1.4 gal. (5.3 lit.)

Maximum Particle Size

  . . . . . . . . . . . . .  2” dia. (51 mm) 

semi-solids

Maximum Temperature Limits

 (diaphragm / flap / bumper material)

E.P.R. / EPDM . . . . . . . . . . . . . . -60

 to 280

 F (-51

 to 138

 

C)

Hytrel

  . . . . . . . . . . . . . . . . . . . -20

 to 180

 F (-29

 to 82

 C)

Nitrile  . . . . . . . . . . . . . . . . . . . . 10

 to 180

 F (-12

 to 82

 

C)

Polypropylene  . . . . . . . . . . . . 32

 to 175

 F (0

 to 79

 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

Mounting Dimension

 .   9-1/16” x 10-1/16” (230 mm x 256 mm)

Noise Level

 @ 70 psig, 60 cpm

  . . . . . .  85.0 dB(A)

 Tested with 67263 muffler assembly installed.

 The pump sound pressure levels published here have been updated to 

an Equivalent Continuous Sound Level (LA

eq

) to meet the intent of ANSI 

S1.13-1971, CAGI-PNEUROP S5.1 using four microphone locations.

MODEL DESCRIPTION CHART

PF20X - X  X  X - S  X  X - B

Thread

A - NPTF

B - BSP

F - 2” ANSI / DIN Flange

Centre Section Material

A - Aluminum

S - Stainless Steel

Fluid Section Service Kit Selection

EXAMPLE: Model #PF20A-AAP-SAA-B

Fluid Section Service Kit # 637310-AA

PF20X - XXX - X X X - B

 Flap 

Diaphragm

637310 - X X

Fluid Caps and Manifold Material 

A - Aluminum

C - Cast Iron

S - Stainless Steel

Diaphragm Material

A - Santoprene

B - Santoprene

C - Hytrel

G - Nitrile

L - Long Life PTFE

T - PTFE / Santoprene

V - Viton

Seat Material

S  - Stainless Steel

Hardware Material

P - Plated Steel

S - Stainless Steel

Flap Material

A - E.P.R.

G - Nitrile

U - Polyurethane

V - Viton

Summary of Contents for ARO PF20 B Series

Page 1: ...l Inlet Pressure 10 psig 0 69 bar Maximum Outlet Pressure 120 psig 8 3 bar Maximum Flow Rate 172 gpm 651 lpm Displacement Cycle 100 psig 1 4 gal 5 3 lit Maximum Particle Size 2 dia 51 mm semi solids MaximumTemperature Limits diaphragm flap bumper material E P R EPDM 60 to 280 F 51 to 138 C Hytrel 20 to 180 F 29 to 82 C Nitrile 10 to 180 F 12 to 82 C Polypropylene 32 to 175 F 0 to 79 C Santoprene 4...

Page 2: ...ta Sheets on all materials from the supplier for proper handling instructions OPERATING AND SAFETY PRECAUTIONS READ UNDERSTAND AND FOLLOWTHIS INFORMATIONTO AVOID INJURY AND PROPERTY DAMAGE WARNING EXPLOSION HAZARD Models containing alu minum wetted parts cannot be used with 1 1 1 trichlo roethane methylene chloride or other halogenated hydrocarbon solvents which may react and explode y Check pump ...

Page 3: ...fers high volume delivery even at low air pressure and a broad range of material compati bility options 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 differential in the air chambers to alternately create suction and positive fluid pressure in the fluid chambers flap che...

Page 4: ...0A X X B 4 94531 A PF20S X X B 4 96656 SS 144 U Cup 3 16 x 1 3 8 OD 1 Y186 51 B 180 Washer 0 406 ID x 0 031 thick 1 94098 Co MATERIAL CODE A Aluminum B Nitrile C Carbon Steel Co Copper CI Cast Iron E E P R H Hytrel L Long Life PTFE SP Santoprene SS Stainless Steel T PTFE U Polyurethane V Viton Smart Parts keep these items on hand in addition to the Service Kits for fast repair and reduction of dow...

Page 5: ...TION SEALANTS Lubriplate FML 2 is a white food grade petroleum grease Apply Lubriplate FML 2 grease to all O rings U Cups and mating parts Apply Loctite 242 to threads at assembly Apply Loctite 503 pipe sealant Apply anti seize compound to threads when using stainless steel fasteners and stainless steel wet ends 75 75 7 PTFE VIEW OF TWO PIECE PTFE DIAPHRAGM 80 8 6 4 1 7 5 3 2 Torque Sequence 27 74...

Page 6: ...mble 140 valve insert with dished side to ward 141 valve plate Assemble 141 valve plate with part number identification toward 140 valve insert 5 Assemble 200 and 241 gaskets and 233 adapter plate to 135 valve housing securing with 240 screws 6 Assemble 132 and 166 gaskets and 176 checks to 101 center body 7 Assemble 135 valve housing and components to 101 center body securing with 134 screws AIR ...

Page 7: ...8 166 132 243 244 199 141 140 240 200 241 128 176 PILOT VALVE PART GROUP MAJOR VALVE A replacement Major Valve Service Assembly is available separately which includes the following 637374 2 for models PF20A XXX SXX B 105 4 111 128 2 132 135 136 137 138 139 140 141 166 176 2 199 200 233 240 2 241 242 243 and 244 637374 4 for models PF20S XXX SXX B 105 4 111 128 2 132 135 136 137 138 139 140 141 146...

Page 8: ...h vacuum y Check all joints on the inlet manifolds and suction con nections These must be air tight y Inspect the pump for solid objects logged in the dia phragmchamber or the seat area Dimensions shown are for reference only they are displayed in inches and millimeters mm Figure 4 Air Inlet 3 4 14 NPTF 1 Inlet Outlet A C K Dotted lines show optional 67263 muffler assembly B D E F G H J DIMENSIONS...

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