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hdf3mdl2sm-rev0316  

Model HDF3-M & HDF4-M  Page 2

Meanings of 

Abbreviations:

A = Compressed Fibre 

H = Hytrel

®

 

SS = Stainless Steel  

 

B = Nitrile 

N = Neoprene  

U = Urethane 

CI = Cast Iron 

PS = Plated Steel 

S = Santoprene 

 

DI = Ductile Iron 

 

 

Most types available in dual port design. See price book or consult factory for details. 

Hytrel is a registered tradename of E.I. du Pont. Santoprene is a registered tradename of Exxon Mobil Corp.

Explanation of Pump Nomenclature, HDF3-M & HDF4-M

II 2GD T5

II 1 G c T5

II 1 D c T100°C

I M1 c

I M2 c

Models equipped with Cast Iron wetted parts, and Cast 

Iron midsection parts.

MATERIALS OF CONSTRUCTION

HDF3-M

Type

Manifold

Elbow

Outer 

Chamber

Inner 

Chamber

Outer 

Diaphragm 

Plates

Inner 

Diaphragm 

Plate

Intermedi

-

ate Housing

Diaphragm 

Rod

Valve 

Seat

Hardware

Diaphragm

Flap 

Valve 

Material

Seat 

Gasket

Sealing 

Rings

Shippping 

Wt. (lbs)

DA2II

CI

CI

DI

CI

PS

CI

416SS

SS

PS

N

U

A

B

245

DN2II

CI

CI

DI

CI

PS

CI

416SS

SS

PS

N

N

A

B

363

DB2II

CI

CI

DI

CI

PS

CI

416SS

SS

PS

B

B

A

B

363

DK2II

CI

CI

DI

CI

PS

CI

416SS

SS

PS

N

H

A

B

363

DS2II

S

S

HDF4-M

 

Type 2

DN2II

CI

CI

DI

CI

PS

CI

416SS

SS

PS

N

N

A

B

390

DB2II

CI

CI

DI

CI

PS

CI

416SS

SS

PS

B

B

A

B

390

DA2II

CI

CI

DI

CI

PS

CI

416SS

SS

PS

N

U

A

B

390

DS2II

S

S

To order a pump or replacement parts, first enter the Model Number  HDF3-M, or  HDF4-M,  followed by the Type Designation listed below in the far left column.

Materials

 

Operating Temperatures

For specific applications, always consult “Chemical Resistance Chart" Technical Bulletin

Nitrile 

General purpose, oil-resistant. Shows good solvent, oil, water and hydraulic fluid resistance. Should 

not be used with highly polar solvents like acetone and MEK, ozone, chlorinated hydrocarbons and nitro 

hydrocarbons. 

 

NEOPRENE

  All purpose. Resistant to vegetable oils. Generally not affected by moderate chemicals, fats, 

greases and many oils and solvents. Generally attacked by strong oxidizing acids, ketones, esters, nitro 

hydrocarbons and chlorinated aromatic hydrocarbons.

HYTREL

®

  Good on acids, bases, amines and glycols at room temperature. 

 

Urethane

 

 Shows good resistance to abrasives. Has poor resistance to most solvents and oils.

 

 Maximum 

Minimum

Santoprene

®

  Injection molded thermoplastic elastomer with no fabric layer. Long mechanical flex life. 

Excellent abrasion resistance.

190°F -10°F

88°C -23°C 

200°F -10°F

93°C -23°C

 

220°F -20°F

104°C -29°C

 

150°F +32°F

66°C 

   0°C

275

°

-40

°

135

°

-40

°

C

Maximum and Minimum Temperatures are the limits for which 

these materials can be operated. Temperatures coupled with 

pressure affect the longevity of diaphragm pump components. 

Maximum life should not be expected at the extreme limits of 

the temperature ranges.

CF-8M Stainless Steel

 equal to or exceeding ASTM specification A743 for corrosion resistant iron 

chromium, iron chromium nickel, and nickel based alloy castings for general applications. Commonly 

referred to as 316 Stainless Steel in the pump industry.

Summary of Contents for Warren Rupp Sandpiper HDF3-M

Page 1: ...vicing 7 Pilot Valve 8 Pilot Valve Actuator 8 Service Instructions Troubleshooting 9 Warranty 9 Material Codes 10 Composite Repair Parts List 11 12 Composite Repair Drawing 13 CE Declaration of Confor...

Page 2: ...dance on ATEX applications please consult the factory When the pump is used for materials that tend to settle out or solidify the pump should be flushed after each use to prevent damage In freezing te...

Page 3: ...SANDPIPER pumps are designed to be powered only by compressed air II 2GD T5 See pages 17 18 for ATEX ratings U S Gallons per minute 10 0 0 20 30 40 50 60 70 80 90 100 20 40 60 80 100 120 140 160 180...

Page 4: ...in the far left column Materials Operating Temperatures For specific applications always consult Chemical Resistance Chart Technical Bulletin Nitrile General purpose oil resistant Shows good solvent...

Page 5: ...1 8 Figures in parenthesis millimeters HDF3 M HDF4 Suction Discharge Ports Four 4 3 4 dia thru holes equally spaced on a 6 diameter bolt circle 4 Eight 8 5 8 11 unc tapped holes equally spaced on a 7...

Page 6: ...fted at each end of the diaphragm stroke by the diaphragm plate coming in contact with the end of the pilot spool This pushes it into position for shifting of the air distribution valve The chambers a...

Page 7: ...5 INSTALLATION GUIDE Bottom Discharge Flap Valve Unit The air exhaust should be piped to an area for safe disposition of the product being pumped in the event of a diaphragm failure CAUTION Available...

Page 8: ...s The valve body assembly is removed from the pump by removing these four hex head capscrews With the valve body assembly off the pump access to the sleeve and spool set is made by removing four hex h...

Page 9: ...and elbows When the top suction elbows are removed the valve and seat are connected as an as sembly When the bottom discharge elbows are removed the valve and seat stay with the outer chamber Visual i...

Page 10: ...Place remaining outer chamber on the open end and tighten down the securing nuts gradually and evenly on both sides Caution should be used while reassembling Flap valves The valves are designed for so...

Page 11: ...of suction manifold or elbow flange E Suction line or strainer plugged F Diaphragm ruptured PROBLEM Pump will not cycle Note Always disconnect air supply to relieve air pressure before disassembling...

Page 12: ...r Coded GREEN 366 Food Grade Nitrile Color WHITE 368 Food Grade EPDM Color GRAY 370 Butyl Rubber Color Coded BROWN 371 Philthane Tuftane 374 Carboxylated Nitrile 375 Fluorinated Nitrile 378 High Densi...

Page 13: ...t 1 16 170 032 330 Capscrew Hex Head 8 17 095 043 010 Body Valve 1 18 196 100 015 Chamber Inner 2 19 560 022 360 O Ring 2 20 170 045 330 Capscrew Hex Head 4 21 530 036 000 Muffler Exhaust 1 22 685 041...

Page 14: ...ge Used with Santoprene 4 570 002 365 Pad Hinge Not used with Santoprene 4 62 170 082 330 Capscrew Hex Head 14 63 570 010 360 Pad Wear 2 570 010 364 Pad Wear Use with Santoprene 2 570 010 365 Pad Wear...

Page 15: ...hdf3mdl2sm rev0316 Model HDF3 M HDF4 M Page 13 2010 Warren Rupp Inc All rights reserved SANDPIPER are registered tradenames of Warren Rupp Inc USE WITH HDF4 M ONLY...

Page 16: ...nity Directive 2006 42 EC on Machinery according to Annex VIII This product has used Harmonized Standard EN809 1998 A1 2009 Pumps and Pump Units for Liquids Common Safety Requirements to verify confor...

Page 17: ...chnical knowledge apply to the listed equipment AODD Pumps and Surge Suppressors Technical File No 203104000 1410 MER AODD Air Operated Double Diaphragm Pumps EC Type Examination Certificate No Pumps...

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