Warren rupp SANDPIPER Signature Series Parts list manual


Model HDF3M
& HDF4M
Heavy Duty Flap Valve
Design Level 2

A Unit of IDEX Corporation
800 N. Main St.,
Manseld, Ohio 44902 USA
Telephone [phone]
Fax [phone]
SANDPIPERPUMP.COM
© Copyright 2017 Warren Rupp, Inc.
All rights reserved
Certied Quality
ISO 9001 Certied
ISO 14001 Certied
SERVICE & OPERATING MANUAL
Original Instructions
1: PUMP SPECS2: INSTAL & OP3: EXP VIEW4: AIR END5: WET END6: OPTIONAL7: WARRANTY

hdf3dl2sm-rev1218
sandp ipe rpu mp.c om
Model HDF3M/HDF4M
IMPORTANT
Read the safety warnings and instructions in this manual
before pump installation and start-up. Failure to comply with
the recommendations stated in this manual could damage the
pump and void factory warranty.
When used for toxic or aggressive uids, the pump should
always be ushed clean prior to disassembly.
Airborne particles and loud noise hazards. Wear eye and ear
protection.
Before maintenance or repair, shut off the compressed air line,
bleed the pressure, and disconnect the air line from the pump.
Be certain that approved eye protection and protective clothing
are worn at all times. Failure to follow these recommendations
may result in serious injury or death.
When the pump is used for materials that tend to settle out
or solidify, the pump should be ushed after each use to
prevent damage. In freezing temperatures the pump should be
completely drained between uses.
Before pump operation, inspect all fasteners for loosening
caused by gasket creep. Retighten loose fasteners to prevent
leakage. Follow recommended torques stated in this manual.
CAUTION
WARNING
Nonmetallic pumps and plastic components are not UV
stabilized. Ultraviolet radiation can damage these parts and
negatively affect material properties. Do not expose to UV light
for extended periods of time.
In the event of diaphragm rupture, pumped material may enter
the air end of the pump, and be discharged into the atmosphere.
If pumping a product that is hazardous or toxic, the air exhaust
must be piped to an appropriate area for safe containment.
This pump is pressurized internally with air pressure
during operation. Make certain that all fasteners and piping
connections are in good condition and are reinstalled properly
during reassembly.
Take action to prevent static sparking. Fire or explosion can
result, especially when handling ammable liquids. The pump,
piping, valves, containers and other miscellaneous equipment
must be properly grounded.
Safety Information
ATEX Pumps - Conditions For Safe Use
WARNING
Pump not designed, tested or certied to be powered by
compressed natural gas. Powering the pump with natural
gas will void the warranty.
Use safe practices when lifting
kg
WARNING
The use of non-OEM replacement parts will void (or negate)
agency certications, including CE, ATEX, CSA, 3A and EC1935
compliance (Food Contact Materials). Warren Rupp, Inc. cannot
ensure nor warrant non-OEM parts to meet the stringent
requirements of the certifying agencies.
1. Ambient temperature range is as speci ed in tables 1 to 3 on the next page (per Annex I of DEKRA 18ATEX0094X)
2. ATEX compliant pumps are suitable for use in explosive atmospheres when the equipment is properly grounded in
accordance with local electrical codes
3. Non-Metallic ATEX Pumps only — See Explanation of Pump Nomenclature / ATEX Details Page
Conductive Polypropylene, conductive Acetal or conductive PVDF pumps are not to be installed in applications where the
pumps may be subjected to oil, greases and hydraulic liquids.
4. The optionally provided solenoids shall be protected by a fuse corresponding to its rated current (max 3*Irat according
to EN 60127) or by a motor protecting switch with short circuit and thermal instantaneous tripping (set to the rated
current) as short circuit protection. For solenoids with a very low rated current, a fuse with the lowest current value
according to the indicated standard will be suffi cient. The fuse may be accommodated in the associated supply unit
or shall be separately arranged. The rated voltage of the fuse shall be equal or greater than the stated rated voltage of the
solenoid. The breaking capacity of the fuse shall be as high as or higher than the maximum expected short circuit current
at the location of the installation (usually 1500 A). The maximum permissible ripple is 20% for all dc solenoids.
*Not applicable for all pump models — See Explanation of Pump Nomenclature / ATEX Details Page
5. When operating pumps equipped with non-conductive diaphragms that exceed the maximum permissible projected area,
as de ned in EN ISO 80079-36 : 2016 section 6.7.5 table 8, the following protection methods must be applied
- Equipment is always used to transfer electrically conductive fl uids or
- Explosive environment is prevented from entering the internal portions of the pump, i.e. dry running.
6. Pumps provided with the pulse output kit and used in the potentially explosive atmosphere caused by the presence of
the combustible dust shall be installed in such a way that the pulse output kit is protected against impact
*Not applicable for all pump models — See Explanation of Pump Nomenclature / ATEX Details Page
UNIVERSAL ALL AODD

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om Model HDF3M/HDF4M • 3
Temperature Tables
Ambient Temperature
Range [°C]
Process Temperature
Range [°C]1
Temperature
Class
Maximum Surface Tem-
perature [°C]
-20°C to +60°C
-20°C to +80°C T5 T100°C
-20°C to +108°C T4 T135°C
-20°C to + 160°C T3
T200°C
-20°C to +177°C (225°C) T2

Ambient Temperature
Range [°C]
Process Temperature
Range [°C]
Temperature
Class
Maximum Sur-
face Temperature
[°C]
Options
Pulse Output
Kit
Integral Solenoid
-20°C to +60°C -20°C to +100°C T5 T100 X
-20°C to +50°C -20°C to +100°C T5 T100 X
Ambient Temperature
Range [°C]
Process Temperature
Range [°C]
-20°C to +60°C -20°C to +150°C
1Per CSA standards ANSI LC6-2018 US & Canadian Technical Letter R14, G-Series Natural Gas Models are restricted to (-20°C to + 80°C) process temperature
Note: The ambient temperature range and the process temperature range should not exceed the operating
temperature range of the applied non-metallic parts as listed in the manuals of the pumps.
2ATEX Pulse output or Intergral Solenoid Not Available For All Pump Models See Explanation of Pump Nomenclature / ATEX Details Page



hdf3dl2sm-rev1218
4 • Model HDF3M/HDF4M sa ndp ipe rpu mp.c om
Table of Contents
SECTION 1: PUMP SPECIFICATIONS ..............1
• Explanation of Nomenclature
• Performance
• Materials
• Dimensional Drawings
SECTION 2: INSTALLATION & OPERATION ...4
• Principle of Pump Operation
• Recommended Installation Guide
• Troubleshooting Guide
SECTION 3: EXPLODED VIEW ..........................7
• Composite Repair Parts Drawing
• Composite Repair Parts List
• Material Codes
SECTION 4: AIR END ......................................10
• Air Distribution Valve Assembly
• Air Valve with Stroke Indicator Assembly
• Pilot Valve Assembly
• Intermediate Assembly
SECTION 5: WET END.....................................13
• Diaphragm Drawings
• Diaphragm Servicing
SECTION 7: WARRANTY & CERTIFICATES . . 15
• Warranty
• EC Declaration of Conformity - Machinery
• EC Declaration of Conformity - ATEX
MODEL SPECIFIC
1: PUMP SPECS2: INSTAL & OP3: EXP VIEW4: AIR END5: WET END6: OPTIONAL7: WARRANTY

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om Model Model HDF3M/HDF4M • 5
Explanation of Pump Nomenclature
ATEX Detail
Wet End Materials
A Neoprene/Urethane
B Nitrile
 Neoprene/Hytrel
N Neoprene
S Santoprene
Design Level

Construction
II Cast Iron Wetted, Cast Iron Air
Options
P0 10-30 VDC Pulse Output Kit
P1 Intrinsically Safe ATEX Compliant
Pulse Output
 110/120 or 220/240 VAC Pulse output Kit
Pump Series
HD Heavy Duty
Pump Design
F Flap
Pump Size
3M 3" 150# ANSI Style Flange
4M 4" 150# ANSI Style Flange
Discharge Porting Position
D Top Suction / Bottom Discharge
Your Serial #: (ll in from pump nameplate) _____________________________________
__ __ _____ __ ___ __ __ __
Pump Pump Pump
Options
Discharge Diaphragm/ Design Construction
Series Design Size Porting Valve Level
XX X XXXX, X XX X XX X
Model #:
(ll in from pump
nameplate)
Your Model #:
ATEX Details
Wetted
Material
Options
Non-Wetted
Material
Options
Pump
Options

Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
H, S C6 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, H, S A, C, Y **0, 6 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db A, H, S A, C, Y **0, 6 P1
II 2 G Ex h mb IIC T5 Gb
II 2 D Ex h mb tb IIIC T100°C Db A, H, S A, C, Y **0, 6 A1, A2, A3, A4
S05 M
ATEX Details
Wetted
Material
Options
Non-Wetted
Material
Options
Pump
Options

Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
H, I, S I, Z 6 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, H, I, S, X A, I, Y, Z 6 00
II 2 G E x h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db A, H, I, S, X A, I, Y, Z 6 P1
II 2 G Ex h mb IIC T5 Gb
II 2 D Ex h mb tb IIIC T100°C Db A, H, I, S, X A, I, Y, Z 6 A1, A2, A3, A4
S1F M, M1F Remove wetted material option X
**Pump option 0 is only ATEX compliant with non-wetted material option C
ATEX Details
Wetted
Material
Options
Non-Wetted
Material
Options
Pump
Options

Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
H, I, S I, S, Z 6 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, H, I, S, X A, I, S, Y, Z 6 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db A, H, I, S, X A, I, S, Y, Z 6 P1
II 2 G Ex h mb IIC T5 Gb
II 2 D Ex h mb tb IIIC T100°C Db A, H, I, S, X A, I, S, Y, Z 6 A1, A2, A3, A4
S15,S20,S30 M
ATEX Details
Wetted
Material
Options
Non-Wetted
Material
Options
Pump
Options

Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
C, V C6 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db C, V C0, 6 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db C, V C0, 6 P1
II 2 G Ex h mb IIC T5 Gb
II 2 D Ex h mb tb IIIC T100°C Db C, V C0, 6 A1, A2, A3, A4
S05, S1F NM
ATEX Details
Wetted
Material
Options
Non-Wetted
Material
Options
Pump
Options

Options
I 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
C C 6 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db C C 0, 6 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db C C 0 ,6 P1
II 2 G Ex h mb IIC T5 Gb
II 2 D Ex h mb tb IIIC T100°C Db C C 0 ,6 A1, A2, A3, A4
S15,S20 NM
ATEX Details Construction Options
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db CA 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db CA P1
PB1/4
ATEX Details
Wetted
Material
Options
Non-Wetted
Material
Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
S S, T, 7, 8, 9
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db All Options All Options
G15, G20, G30
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
II, SI, HI N/A
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, CI, II, HI, HC, SI, SS P1
ST1 1/2
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
II, SI 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, I, SI, SS 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db A, I, II, SI, SS P1
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
SI, HI 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, SI, SS, HC, HI 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db A, HC, HI, SI, SS P1
HDF1, HDF2
SB1, SA1
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
II 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db II P1
HDF3M
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
CI, SI 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db CI, SI P1
HDB3
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
SI, HI, II 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, CI, SS, HC 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db A, CI, II, HI, HC, SI, SS P1
HDB2
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
SI, II 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, CI, SS 00
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db A, CI, II, SI, SS P1
HDB1
ATEX Details Construction Options
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1D Ex h IIIC T100°C...T200°C Da
I M1 Ex h I Ma
II, SI 00
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db A, I, SI, SS 00
HDF3A
MODEL SPECIFIC
1: PUMP SPECS

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om
6 • Model HDF3M/HDF4M
Performance
HDF3M/HDF4M
SUCTION/DISCHARGE PORT SIZE
• HDF3-M: 3" ANSI 150# Style Flange
• HDF4-M: 4" ANSI 150# Style Flange
CAPACITY
• 0 to 303 gallons per minute
(0 to 1,147 liters per minute)
AIR DISTRIBUTION VALVE
• No-lube, no-stall design
SOLIDS-HANDLING
• Up to 3" (75mm)
HEADS UP TO
• 125 psi or 289 ft. of water
(8.8 Kg/cm2or 88 meters)
MAXIMUM OPERATING PRESSURE
• 125 psi (8.6 bar)
DISPLACEMENT/STROKE
• 1.15 Gallon / 4.37 liter
SHIPPING WEIGHT
• HDF3M 400 lbs. (175 kg)
• HDF4M 470 lbs. (206 kg)
Materials
Material Prole: Operating
Temperatures:
Max. Min.
Conductive Acetal: Tough, impact resistant, ductile. Good
abrasion resistance and low friction surface. Generally inert, with
good chemical resistance except for strong acids and oxidizing
agents.
190°F
88°C
-20°F
-29°C
EPDM: Shows very good water and chemical resistance. Has
poor resistance to oils and solvents, but is fair in ketones and
alcohols.
280°F
138°C
-40°F
-40°C
FKM: (Fluorocarbon) Shows good resistance to a wide range
of oils and solvents; especially all aliphatic, aromatic and
halogenated hydrocarbons, acids, animal and vegetable oils.
Hot water or hot aqueous solutions (over 70°F(21°C)) will
attack FKM.
350°F
177°C
-40°F
-40°C
Hytrel®: Good on acids, bases, amines and glycols at room
temperatures only.
220°F
104°C
-20°F
-29°C
Neoprene: All purpose. Resistance to vegetable oils. Generally
not affected by moderate chemicals, fats, greases and many
oils and solvents. Generally attacked by strong oxidizing acids,
ketones, esters and nitro hydrocarbons and chlorinated aromatic
hydrocarbons.
200°F
93°C
-10°F
-23°C
Nitrile: General purpose, oil-resistant. Shows good solvent, oil,
water and hydraulic uid resistance. Should not be used with
highly polar solvents like acetone and MEK, ozone, chlorinated
hydrocarbons and nitro hydrocarbons.
190°F
88°C
-10°F
-23°C
Nylon: 6/6 High strength and toughness over a wide
temperature range. Moderate to good resistance to fuels, oils
and chemicals.
180°F
82°C
32°F
0°C
Polypropylene: A thermoplastic polymer. Moderate tensile
and ex strength. Resists stong acids and alkali. Attacked by
chlorine, fuming nitric acid and other strong oxidizing agents.
180°F
82°C
32°F
0°C
PVDF: (Polyvinylidene Fluoride) A durable uoroplastic with
excellent chemical resistance. Excellent for UV applications.
High tensile strength and impact resistance.
250°F
121°C
0°F
-18°C
Santoprene®: Injection molded thermoplastic elastomer with
no fabric layer. Long mechanical ex life. Excellent abrasion
resistance.
275°F
135°C
-40°F
-40°C
UHMW PE: A thermoplastic that is highly resistant to a broad
range of chemicals. Exhibits outstanding abrasion and impact
resistance, along with environmental stress-cracking resistance.
180°F
82°C
-35°F
-37°C
Urethane: Shows good resistance to abrasives. Has poor
resistance to most solvents and oils.
150°F
66°C
32°F
0°C
Virgin PTFE: (PFA/TFE) Chemically inert, virtually impervious.
Very few chemicals are known to chemically react with PTFE;
molten alkali metals, turbulent liquid or gaseous uorine and
a few uoro-chemicals such as chlorine triuoride or oxygen
diuoride which readily liberate free uorine at elevated
temperatures.
220°F
104°C
-35°F
-37°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.

Alloy C: Equal to ASTM494 CW-12M-1 specication for nickel and nickel alloy.
Stainless Steel: Equal to or exceeding ASTM specication A743 CF-8M 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.
For specic applications, always consult the Chemical Resistance Chart.
CAUTION! Operating temperature limitations are as follows:
40 PSI
60 PSI
80 PSI
100 PSI
(6.8 Bar)
(2.72 Bar)
(4.08 Bar)
(5.44 Bar)
(1.36 Bar)
PSI
125 PSI
(8.6 Bar)
20 PSI Air Inlet Pressure
BAR
0
1
2
7
3
4
5
6
HEAD
AIR CONSUMPTION
SCFM (M3/hr)
MODEL HDF3M/HDF4M Performance Curve
Performance based on the following: elastomer fitted pump, flooded suction, water at ambient temperature. .
The use of other materials and varying hydraulic conditions may result in deviations in excess of 5%.
0
20
40
60
80
100
120
140
0 20 40 60 80 100 120 140 160 180 220 240 280 320
10(17)
20(34)
40(68)
60(102)
80(136)100(170)
120(204)
140(238)
160(272)
0 200100 400
300 500 600 700 800 900 1000 1100 1200
200 260 300
9
8
Liters per Minute
Capacity
US Gallons per Minute
MODEL SPECIFIC UNIVERSAL ALL AODD
1: PUMP SPECS

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om Model Model HDF3M/HDF4M • 7
HDF3-M Heavy Duty Flap Valve
Dimensions in inches (metric dimensions in brackets). Dimensional Tolerance .125" (3mm).
2X 7.50
191
15.93
405
2X
6.00
152
8X .75
19
2X 2.00
51
32.31
821
30.31
770
AIR INLET
3/4" NPT (FEMALE)
13.13
333
14.63
371
7.06
179
5.30
135
10.38
264
11.63
295
2X 3.00
76
4X
.56
14
3.75
95
3.75
95
5.06
129
26.56
675
16.19
411
DISCHARGE PORT
3" 150# ANSI
STYLE FLANGE
SUCTION PORT
3" 150# ANSI
STYLE FLANGE
Dimensional Drawings
MODEL SPECIFIC
1: PUMP SPECS

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om
8 • Model HDF3M/HDF4M
32.31
821
2X
9.00
229
15.93
405
2X 2.00
51
2X
7.50
191
16X
.53
13
31.06
789
AIR INLET
3/4" NPT (FEMALE)
6.75
171
5.06
129
15.93
405
26.56
675
16.19
411
SUCTION PORT
4" 150# ANSI
STYLE FLANGE
DISCHARGE PORT
4" 150# ANSI
STYLE FLANGE
7.06
179
5.30
135
13.13
333
10.38
264
14.63
371
11.63
295
4X
.56
14
2X 3.00
76
EXHAUST PORT
1" NPT (FEMALE)
HDF4-M Heavy Duty Flap Valve
Dimensions in inches (metric dimensions in brackets). Dimensional Tolerance .125" (3mm).
Dimensional Drawings
1: PUMP SPECS

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sa ndp ipe rpu mp.c om Model HDF3M/HDF4M • 9
Principle of Pump Operation
Air-Operated Double Diaphragm (AODD) pumps are powered by compressed
air or nitrogen.
The main directional (air) control valve ①distributes compressed air to
an air chamber, exerting uniform pressure over the inner surface of the
diaphragm
②. At the same time, the exhausting air ③ from behind the
opposite diaphragm is directed through the air valve assembly(s) to an
exhaust port ④.
As inner chamber pressure (P1) exceeds liquid chamber pressure (P2),
the rod ⑤connected diaphragms shift together creating discharge on one
side and suction on the opposite side. The discharged and primed liquid’s
directions are controlled by the check valves (ball or ap)⑥orientation.
The pump primes as a result of the suction stroke. The suction stroke lowers
the chamber pressure (P3) increasing the chamber volume. This results in
a pressure differential necessary for atmospheric pressure (P4) to push the
uid through the suction piping and across the suction side check valve and
into the outer uid chamber ⑦.
Suction (side) stroking also initiates the reciprocating (shifting, stroking
or cycling) action of the pump. The suction diaphragm’s movement is
mechanically pulled through its stroke. The diaphragm’s inner plate makes
contact with an actuator plunger aligned to shift the pilot signaling valve.
Once actuated, the pilot valve sends a pressure signal to the opposite end
of the main directional air valve, redirecting the compressed air to the
opposite inner chamber.
UNIVERSAL ALL AODD
2: INSTAL & OP

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om
10 • Model HDF3M/HDF4M
Recommended Installation Guide
Installation and Start-Up
Locate the pump as close to the product being pumped as possible. Keep the suction line length and number of ttings to a minimum. Do not reduce the suction line
diameter.
Air Supply
Connect the pump air inlet to an air supply with sufcient capacity and pressure to achieve desired performance. A pressure regulating valve should be installed to
insure air supply pressure does not exceed recommended limits.
Air Valve Lubrication
The air distribution system is designed to operate WITHOUT lubrication. This is the standard mode of operation. If lubrication is desired, install an air line lubricator
set to deliver one drop of SAE 10 non-detergent oil for every 20 SCFM (9.4 liters/sec.) of air the pump consumes. Consult the Performance Curve to determine air
consumption.
Air Line Moisture
Water in the compressed air supply may cause icing or freezing of the exhaust air, causing the pump to cycle erratically or stop operating. Water in the air supply can
be reduced by using a point-of-use air dryer.
Air Inlet and Priming
To start the pump, slightly open the air shut-off valve. After the pump primes, the air valve can be opened to increase air ow as desired. If opening the valve
increases cycling rate, but does not increase the rate of ow, cavitation has occurred. The valve should be closed slightly to obtain the most efcient air ow to pump
ow ratio.
CAUTION
The air exhaust should
be piped to an area
for safe disposition
of the product being
pumped, in the event of
a diaphragm failure.
1 Surge Suppressor
Flexible Connector
Pipe Connection
(Style Optional)
Shut-Off Valve
Pressure Gauge
Drain Port
Muffler
(Optional Piped Exhaust)
Flexible
Connection
3 Dryer
Unregulated Air
Supply to Surge
Suppressor
Shut Off
Valve
Flexible Connector
Pipe Connection
(Style Optional
Drain Port
Shut-Off
Valve
Compound
Gauge
Suction Port
Discharge Port
Air Inlet
2 Filter Regulator
4 Lubricator
Check Valve
Note : Surge Suppressor and
Piping, including air line,
must be supported after
the flexible connections.

 Surge Suppressor
Filter/Regulator
Air Dryer
Lubricator
UNIVERSAL ALL AODD, EXCEPT FLAP
2: INSTAL & OP

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om Model HDF3M/HDF4M • 11
Recommended Installation Guide Troubleshooting Guide
For additional troubleshooting tips contact After Sales Support at [email protected] or 419-524-8388
  
Pump Cycles Once Deadhead (system pressure meets or exceeds air
supply pressure).
Increase the inlet air pressure to the pump. Pump is designed for 1:1 pressure ratio at zero ow.
(Does not apply to high pressure 2:1 units).
Air valve or intermediate gaskets installed incorrectly. Install gaskets with holes properly aligned.
Bent or missing actuator plunger. Remove pilot valve and inspect actuator plungers.
Pump Will Not Operate
/ Cycle
Pump is over lubricated. Set lubricator on lowest possible setting or remove. Units are designed for lube free operation.
Lack of air (line size, PSI, CFM). Check the air line size and length, compressor capacity (HP vs. cfm required).
Check air distribution system. Disassemble and inspect main air distribution valve, pilot valve and pilot valve actuators.
Discharge line is blocked or clogged manifolds. Check for inadvertently closed discharge line valves. Clean discharge manifolds/piping.
Deadhead (system pressure meets or exceeds air
supply pressure).
Increase the inlet air pressure to the pump. Pump is designed for 1:1 pressure ratio at zero ow.
(Does not apply to high pressure 2:1 units).
Blocked air exhaust mufer. Remove mufer screen, clean or de-ice, and re-install.
Pumped uid in air exhaust mufer. Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Pump chamber is blocked. Disassemble and inspect wetted chambers. Remove or ush any obstructions.
Pump Cycles and Will
Not Prime or No Flow
Cavitation on suction side. Check suction condition (move pump closer to product).
Check valve obstructed. Valve ball(s) not seating
properly or sticking.
Disassemble the wet end of the pump and manually dislodge obstruction in the check valve pocket.
Clean out around valve ball cage and valve seat area. Replace valve ball or valve seat if damaged.
Use heavier valve ball material.
Valve ball(s) missing (pushed into chamber or
manifold).
Worn valve ball or valve seat. Worn ngers in valve ball cage (replace part). Check Chemical
Resistance Guide for compatibility.
Valve ball(s) / seat(s) damaged or attacked by product. Check Chemical Resistance Guide for compatibility.
Check valve and/or seat is worn or needs adjusting. Inspect check valves and seats for wear and proper setting. Replace if necessary.
Suction line is blocked. Remove or ush obstruction. Check and clear all suction screens or strainers.
Excessive suction lift. For lifts exceeding 20’ of liquid, lling the chambers with liquid will prime the pump in most cases.
Suction side air leakage or air in product. Visually inspect all suction-side gaskets and pipe connections.
Pumped uid in air exhaust mufer. Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Pump Cycles Running
Sluggish / Stalling,
Flow Unsatisfactory
Over lubrication. Set lubricator on lowest possible setting or remove. Units are designed for lube free operation.
Icing. Remove mufer screen, de-ice, and re-install. Install a point of use air drier.
Clogged manifolds. Clean manifolds to allow proper air ow.
Deadhead (system pressure meets or exceeds air
supply pressure).
Increase the inlet air pressure to the pump. Pump is designed for 1:1 pressure ratio at zero ow.
(Does not apply to high pressure 2:1 units).
Cavitation on suction side. Check suction (move pump closer to product).
Lack of air (line size, PSI, CFM). Check the air line size, length, compressor capacity.
Excessive suction lift. For lifts exceeding 20’ of liquid, lling the chambers with liquid will prime the pump in most cases.
Air supply pressure or volume exceeds system hd. Decrease inlet air (press. and vol.) to the pump. Pump is cavitating the uid by fast cycling.
Undersized suction line. Meet or exceed pump connections.
Restrictive or undersized air line. Install a larger air line and connection.
Suction side air leakage or air in product. Visually inspect all suction-side gaskets and pipe connections.
Suction line is blocked. Remove or ush obstruction. Check and clear all suction screens or strainers.
Pumped uid in air exhaust mufer. Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Check valve obstructed. Disassemble the wet end of the pump and manually dislodge obstruction in the check valve pocket.
Check valve and/or seat is worn or needs adjusting. Inspect check valves and seats for wear and proper setting. Replace if necessary.
Entrained air or vapor lock in chamber(s). Purge chambers through tapped chamber vent plugs. Purging the chambers of air can be dangerous.
Product Leaking
Through Exhaust
Diaphragm failure, or diaphragm plates loose. Replace diaphragms, check for damage and ensure diaphragm plates are tight.
Diaphragm stretched around center hole or bolt holes. Check for excessive inlet pressure or air pressure. Consult Chemical Resistance Chart for compatibility
with products, cleaners, temperature limitations and lubrication.
Premature Diaphragm
Failure
Cavitation. Enlarge pipe diameter on suction side of pump.
Excessive ooded suction pressure. Move pump closer to product. Raise pump/place pump on top of tank to reduce inlet pressure.
Install Back pressure device (Tech bulletin 41r). Add accumulation tank or pulsation dampener.
Misapplication (chemical/physical incompatibility). Consult Chemical Resistance Chart for compatibility with products, cleaners, temperature limitations
and lubrication.
Incorrect diaphragm plates or plates on backwards,
installed incorrectly or worn.
Check Operating Manual to check for correct part and installation. Ensure outer plates have not been
worn to a sharp edge.
Unbalanced Cycling Excessive suction lift. For lifts exceeding 20’ of liquid, lling the chambers with liquid will prime the pump in most cases.
Undersized suction line. Meet or exceed pump connections.
Pumped uid in air exhaust mufer. Disassemble pump chambers. Inspect for diaphragm rupture or loose diaphragm plate assembly.
Suction side air leakage or air in product. Visually inspect all suction-side gaskets and pipe connections.
Check valve obstructed. Disassemble the wet end of the pump and manually dislodge obstruction in the check valve pocket.
Check valve and/or seat is worn or needs adjusting. Inspect check valves and seats for wear and proper setting. Replace if necessary.
Entrained air or vapor lock in chamber(s). Purge chambers through tapped chamber vent plugs.
UNIVERSAL ALL SANDPIPER, EXCEPT FLAP
2: INSTAL & OP

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om
12 • Model HDF3M/HDF4M
Composite Repair Parts Drawing
1
2
3
5
6
7
8
8
9
12
12
10
4
11
13
14 50 15
16
17
38
18
19
20
21
21
51
51
52
22
22
24
23
24
23
32
41
35
26
27
25
25
49
51
49
31
53
28
28
54
56
54
56
29
31
49
30
32
33
40
34
25
43 42
35
41
36 37
39
44
44
47
55
55
52
53
45
46
39
49
*
*
*
**
*
*
*
*
*
* USED ON HDF4-M ONLY
TORQUE: 600 IN-LBS.
(67 N-m)
ITEM NO. PART NUMBER DESCRIPTION QTY.
1 031.019.010 ASSEMBLY, MAIN AIR VALVE 1
2
070.006.170 BUSHING 2
3
095.073.001 ASSEMBLY, PILOT VALVE 1
4
114.038.010
W
INTERMEDIATE 1
5
115.068.080 BRACKET, SUPPORT 1
6
132.002.360 BUMPER, DIAPHRAGM 2
7
135.016.162 BUSHING, THREADED 2
8
170.012.330 CAPSCREW, HEX-HD 1/2-13 X 1.00 6
9
170.023.330 CAPSCREW, HEX-HD 7/16-14 X 1.75 4
10
170.024.000 CAPSCREW, HEX HD, 7/16-14 X 1 8
11
170.045.330 CAPSCREW, HEX-HD, 5/16-18 X 1.25 4
12
170.066.330 CAPSCREW, HEX, 1/2-13 X 2.25 12
13
170.082.330 CARPSCREW, HX-HD 1/2-13 X 2.75 14
14
170.095.330 CAPSCREW, SOC-HD 1/2-13 X 3 2
15
196.060.010 CHAMBER, OUTER 2
16
196.100.015 CHAMBER, INNER 2
17
286.098.XXX DIAPHRAGM 2
18
312.015.010 ELBOW, SUCTION 2
19
312.016.010 ELBOW, DISCHARGE 2
20
326.004.080 FOOT, MOUNTING 2
21
334.020.000 FLANGE, FOLLOWER 4
22
338.XXX.XXX VALVE, FLAP 4
23
360.013.XXX GASKET, FLANGE 4
24
360.014.XXX GASKET, FLANGE 4
25
807.046.330 STUD, 5/8-11 2
26
360.041.379 GASKET, VALVE BODY 1
27
360.048.425 GASKET, AIR VALVE 1
28
518.045.010 MANIFOLD 2
29
530.033.000 MUFFLER 1
30
545.007.330 NUT, HEX - 7/16-14 20
31
545.008.330 NUT, HEX 1/2-13 16
32
547.002.110 NUT, NYLON STOP, 1/4-20 8
33
560.001.360 O-RING 2
34
560.022.360 O-RING 2
35
570.002.360 PAD, HINGE 4
36
570.010.XXX PAD, WEAR 2
37
612.090.010 PLATE, OUTER DIAPHRAGM 2
38
612.124.010 PLATE, INNER DIAPHRAGM 2
39
618.003.330 PLUG, PIPE, 1/4" 4
40
620.011.114 PLUNGER, ACTUATOR 2
41
670.006.000 RETAINER, FLAP VALVE 4
42
685.041.120 ROD, DIAPHRAGM 1
43
720.004.360 SEAL, U-CUP 2
44
722.007.115 SEAT, FLAP VALVE 4
45
807.016.330 STUD, 7/16 X 2.25 12
46
807.017.330 STUD, 7/16 X 3.00 8
47
807.018.110 STUD, 1/4-20 8
48
360.021.360 RING, SEALING 4
49
900.003.330 WASHER, LOCK, 1/2 22
50
900.006.330 WASHER, LOCK, 7/16 12
51
901.006.330 WASHER, FLAT 1/2" 14
52
334.037.010 FLANGE, ADAPTER 2
53
360.036.426 GASKET, FLANGE 2
54
545.009.330 NUT, HEX 5/8-11 8
55
807.005.330 STUD, 5/8-11 X 2.50 8
56
900.007.330 WASHER, LOCK, 5/8 8
TORQUE: 600 IN-LBS.
(67 N-m)

 
Sleeve and Spool Set, Pilot Valve Body Assembly,
Bumpers, Bushings, Gaskets, O-rings, Seals,
Plungers
 
Bumpers, Bushings, Gaskets, O-rings, Seals,
Plungers, and Retaining Rings, and Plungers
 
Santoprene Diaphragms, Santoprene Flap Valves,
EPDM Hinge Pads, EPDM Wear Pads, gaskets
 
Nitrile Diaphragms, Nitrile Flap Valves, Nitrile Hinge
Pads, Nitrile Wear Pads, gaskets
 
Neoprene Diaphragms, Neoprene Flap Valves,
Neoprene Hinge Pads, Neoprene Wear Pads, gaskets
 
Neoprene Diaphragms, Urethane Flap Valves,
Neoprene Hinge Pads, Urethane Wear Pads, gaskets
MODEL SPECIFIC
3: EXP VIEW

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om Model HDF3M/HDF4M • 13
Composite Repair Parts List
Item Part Number Description Qty
1* 031.019.010 Air Valve Assembly 1
2 070.006.170 Bushing, Intermediate
(included in item #4) 2
3 095.073.001 Pilot Valve Assy 1
4 114.002.010 Intermediate 1
5 115.068.080 Bracket, Support 1
6 132.002.360 Bumper, Diaphragm 2
7 135.016.162 Bushing, Plunger 2
8 170.012.330 Capscrew, Hx-Hd 1/2-13 x 1.00 6
9 170.023.330 Capscrew, Hx-Hd 7/16-14 x 1.75 4
10 170.024.330 Capscrew, Hx-Hd 7/16-14 x 1.00 8
11 170.045.330 Capscrew, Hx-Hd 5/16-18 x 1.25 4
12 170.066.330 Capscrew, Hx-Hd 1/2-13 x 2.25 12
13 170.082.330 Capscrew, Hx-Hd 1/2-13 x 2.75 14
14 170.095.330 Capscrew, Hx-Hd 1/2-13 x 3.00 2
15 196.060.010 Chamber, Outer -
Includes #39, #45, #46 2
16 196.100.015 Chamber, Inner 2
17 286.098.360 Diaphragm - Buna 2
286.098.365 Diaphragm - Neoprene 2
286.098.354 Diaphragm - Santoprene 2
18 312.015.010 Elbow, Suction 2
19 312.016.010 Elbow, Discharge 2
20 326.004.080 Foot, Mounting 2
21 334.020.000 Flange, Follower 4
22 338.008.360 Valve, Flap Assembly - Buna 4
338.008.365 Valve, Flap Assembly - Neoprene 4
338.011.354 Valve, Flap Assembly - Santoprene 4
338.011.356 Valve, Flap Assembly - Hytrel 4
338.011.357 Valve, Flap Assembly - Urethane 4
23 360.013.379 Gasket, Flange -
Conductive Nitrile 4
360.013.384 Gasket, Flange -
Conductive Neoprene 4
360.013.385 Gasket, Flange -
Conductive EPDM 4
24 360.014.379 Gasket, Flange -
Conductive Nitrile 4
360.014.384 Gasket, Flange -
Conductive Neoprene 4
360.014.385 Gasket, Flange -
Conductive EPDM 4
25 360.021.000 Ring, Sealing 4
26 360.041.379 Gasket, Pilot Valve 1
27 360.048.425 Gasket, Air Valve 1
28 518.045.010 Manifold 2
29 530.033.000 Mufer, Metal 1
30 545.007.330 Nut, Hex 7/16-14 20
31 545.008.330 Nut, Hex 1/2-13 16
32 547.002.110 Nut, Nylon Stop 1/4 x 20 8
33 560.001.360 O-ring 2
34 560.022.360 O-ring 2
35 570.002.360 Pad, Hinge - Buna 4
570.002.365 Pad, Hinge - Neoprene
(also used with Urethane) 4
570.002.364 Pad, Hinge - EPDM
(used with Santoprene) 4
36 570.010.360 Pad, Wear - Buna 2
570.010.364 Pad, Wear - EPDM
(used with Santoprene) 2
Item Part Number Description Qty
570.010.365 Pad, Wear - Neoprene 2
37 612.090.010 Plate, Outer Diaphragm
(includes item #48) 2
38 612.124.010 Plate, Inner Diaphragm 2
39 618.003.330 Plug, Pipe 1/4" NPT
(Included with item #15) 4
40 620.011.114 Plunger, Actuator 2
41 670.006.115 Retainer, Flap Valve 4
42 685.041.120 Rod, Diaphragm 1
43 720.004.360 Seal, U-Cup 2
44 722.007.115 Seat, Flap Valve
(Includes item #47) 4
45 807.016.330 Stud, 7/16-14 x 2.25
(Included with item #15) 12
46 807.017.330 Stud, 7/16-14 x 3.00
(Included with item #15) 8
47 807.018.110 Stud, 1/4-20
(inlcuded with item #44) 8
48 807.046.330 Stud, 5/8-11
(not shone-included with item #37) 2
49 900.003.330 Washer, Lock 1/2" 22
50 900.006.330 Washer, Lock 7/16" 12
51 901.006.330 Washer, Flat 1/2" 14
HDF4-M Components Only
52 334.037.010 Flange, Adapter 4"
(Includes item #55) 2
53 360.034.425 Gasket, Flange 3" 2
54 545.009.330 Nut, Hex 5/8-11 8
55 807.055.330 Stud, 5/8-11 x 2.50
_(Included with item #52) 8
56 900.007.330 Washer, Lock 5/8" 8
ATEX Compliant
LEGEND:
= Items contained within Air End Kits
= Items contianed within Wet End Kits
*Air End Kit includes sleeve and spool set only, not entire air valve
assembly
Note: Kits contain components specic to the material codes.
MODEL SPECIFIC
3: EXP VIEW

hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om
14 • Model HDF3M/HDF4M
Material Codes - The Last 3 Digits of Part Number
000.....Assembly, sub-assembly;
and some purchased items
010.....Cast Iron
015.....Ductile Iron
020.....Ferritic Malleable Iron
080.....Carbon Steel, AISI B-1112
110 .....Alloy Type 316 Stainless Steel
111 .....Alloy Type 316 Stainless Steel
(Electro Polished)
112 .....Alloy C
113 .....Alloy Type 316 Stainless Steel
(Hand Polished)
114 .....303 Stainless Steel
115 .....302/304 Stainless Steel
117 .....440-C Stainless Steel (Martensitic)
120.....416 Stainless Steel
(Wrought Martensitic)
148.....Hardcoat Anodized Aluminum
150.....6061-T6 Aluminum
152.....2024-T4 Aluminum (2023-T351)
155.....356-T6 Aluminum
156.....356-T6 Aluminum
157.....Die Cast Aluminum Alloy #380
158.....Aluminum Alloy SR-319
162.....Brass, Yellow, Screw Machine Stock
165.....Cast Bronze, 85-5-5-5
166.....Bronze, SAE 660
170.....Bronze, Bearing Type,
Oil Impregnated
180.....Copper Alloy
305.....Carbon Steel, Black Epoxy Coated
306.....Carbon Steel, Black PTFE Coated
307.....Aluminum, Black Epoxy Coated
308.....Stainless Steel, Black PTFE Coated
309.....Aluminum, Black PTFE Coated
313.....Aluminum, White Epoxy Coated
330.....Zinc Plated Steel
332.....Aluminum, Electroless Nickel Plated
333.....Carbon Steel, Electroless
Nickel Plated
335.....Galvanized Steel
337.....Silver Plated Steel
351.....Food Grade Santoprene®
353.....Geolast; Color: Black
354.....Injection Molded #203-40
Santoprene®Duro 40D +/-5;
Color: RED
356.....Hytrel®
357.....Injection Molded Polyurethane
358.....Urethane Rubber
(Some Applications)
(Compression Mold)
359.....Urethane Rubber
360.....Nitrile Rubber Color coded: RED
363.....FKM (Fluorocarbon)
Color coded: YELLOW
364.....EPDM Rubber
Color coded: BLUE
365.....Neoprene Rubber
Color coded: GREEN
366.....Food Grade Nitrile
368.....Food Grade EPDM
371.....Philthane (Tuftane)
374.....Carboxylated Nitrile
375.....Fluorinated Nitrile
378.....High Density Polypropylene
379.....Conductive Nitrile
384.....Conductive Neoprene
385 ....Conductive EPDM
408.....Cork and Neoprene
425.....Compressed Fibre
426.....Blue Gard
440.....Vegetable Fibre
500.....Delrin®500
502.....Conductive Acetal, ESD-800
503.....Conductive Acetal, Glass-Filled
506.....Delrin®150
520.....Injection Molded PVDF
Natural color
540.....Nylon
542.....Nylon
544.....Nylon Injection Molded
550.....Polyethylene
551.....Glass Filled Polypropylene
552.....Unlled Polypropylene
555.....Polyvinyl Chloride
556.....Black Vinyl
557.....Conductive Polypropylene
558.....Conductive HDPE
570.....Rulon II®
580.....Ryton®
600.....PTFE (virgin material)
Tetrauorocarbon (TFE)
603.....Blue Gylon®
604.....PTFE
606.....PTFE
607.....Envelon
608.....Conductive PTFE
610.....PTFE Encapsulated Silicon
611 .....PTFE Encapsulated FKM
632.....Neoprene/Hytrel®
633.....FKM/PTFE
634.....EPDM/PTFE
635.....Neoprene/PTFE
637.....PTFE, FKM/PTFE
638.....PTFE, Hytrel®/PTFE
639.....Nitrile/TFE
643.....Santoprene®/EPDM
644.....Santoprene®/PTFE
656.....Santoprene®Diaphragm and
Check Balls/EPDM Seats
661.....EPDM/Santoprene®
666.....FDA Nitrile Diaphragm,
PTFE Overlay, Balls, and Seals
668.....PTFE, FDA Santoprene®/PTFE
• Delrin and Hytrel are registered
tradenames of E.I. DuPont.
• Nylatron is a registered tradename
of Polymer Corp.
• Gylon is a registered tradename
of Garlock, Inc.
• Santoprene is a registered tradename
of Exxon Mobil Corp.
• Rulon II is a registered tradename
of Dixion Industries Corp.
• Ryton is a registered tradename
of Phillips Chemical Co.
• Valox is a registered tradename
of General Electric Co.
RECYCLING
Warren Rupp is an ISO14001 registered company
and is committed to minimizing the impact our products
have on the environment. Many components of
SANDPIPER® AODD pumps are made of recyclable
materials. We encourage pump users to recycle worn
out parts and pumps whenever possible, after any
hazardous pumped fluids are thoroughly flushed.
Pump users that recycle will gain the satisfaction to
know that their discarded part(s) or pump will not
end up in a landll. The recyclability of SANDPIPER
products is a vital part of Warren Rupp’s commitment
to environmental stewardship.
UNIVERSAL ALL SP
3: EXP VIEW

Air Distribution Valve Assembly
Air Distribution Valve Assembly
Item Part Number Description Qty
1 031.019.010 Air Valve Assembly 1
1-A 095.043.010 Body, Air Valve 1
1-B 031.012.000 Sleeve and Spool Set 1
1-C 132.014.358 Bumper 2
1-D 560.020.360 O-Ring 6
1-E 360.010.425 Gasket 2
1-F 165.011.010 End Cap 2
1-G 170.032.330 Hex Head Capscrew 8
IMPORTANT
Read these instructions completely, before installation
and start-up. It is the responsibility of the purchaser
to retain this manual for reference. Failure to comply
with the recommendations stated in this manual will
damage the pump, and void factory warranty.
1-A
1-B1-B
1-C
1-E
1-F
1-G
1-C
1-E
1-F
1-G
1-D
Air Distribution Valve Servicing
See repair parts drawing, remove screws.
Step 1: Remove Hex Head Cap Screws (1-G).
Step 2: Remove end cap (1-F), gasket (1-E) and bumper (1-C).
Step 3: Remove spool part of (1-B) (caution: do not scratch).
Step 4: Press sleeve (1-B) from body (1-A).
Step 5: Inspect O-Ring (1-D) and replace if necessary.
Step 6: Lightly lubricate O-Rings (1-D) on sleeve (1-B).
Step 7: Press sleeve (1-B) into body (1-A).
Step 8: Reassemble in reverse order, starting with step 3.
Note:
sleeve and spools (1-B) cannot be interchanged.
LEGEND:
= Items contained within Air End Kits
Note:
hdf3asl7sm-rev0817
SANDPIPERPUMP.COMModel HDF3-A/HDF4-A • 11
4: AIR END
MAIN AIR VALVE ASSEMBLY PARTS LIST
hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om Model HDF3M/HDF4M • 15
Material Codes - The Last 3 Digits of Part Number
4: AIR END

Pilot Valve Assembly
Pilot Valve Assembly
SAN DPI PER PUM P.COM
13 • Model HDB1
hdb15dl7sm-rev0817
Pilot Valve Assembly
PILOT VALVE ASSEMBLY PARTS LIST
Item Part Number Description
3 095.073.001 Pilot Valve Assembly 1
3-A 095.070.558 Valve Body 1
3-B 755.025.000 Sleeve (With O-Rings) 1
3-C 560.033.360 O-Ring (Sleeve) 4
3-D 775.026.000 Spool (With O-Rings) 1
3-E 560.023.360 O-Ring (Spool) 2
3-F 675.037.080 Retaining Ring 1
3-A
3-F
3-D
3-B
3-C
3-E
Pilot Valve Servicing
With Pilot Valve removed from pump.
Step 1: Remove snap ring (3-F).
Step 2: Remove sleeve (3-B), inspect O-Rings (3-C),
replace if required.
Step 3: Remove spool (3-D) from sleeve (3-B),
inspect O-Rings (3-E), replace if required.
Step 4: Lightly lubricate O-Rings (3-C) and (3-E).
Reassemble in reverse order. LEGEND:
= Items contained within Air End Kits
Note:
MODEL SPECIFIC
4: AIR END
hdf3asl7sm-rev0817
SANDPIPERPUMP.COM Model HDF3-A/HDF4-A • 12
4: AIR END
hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om
16 • Model HDF3M/HDF4M
MODEL SPECIFIC
4: AIR END

Pilot Valve Assembly
hdf3dl2sm-rev1218
sa ndp ipe rpu mp.c om Model HDF3M/HDF4M • 17
  With manifolds and outer chambers
removed, remove diaphragm assemblies from
diaphragm rod. DO NOT use a pipe wrench or similar
tool to remove assembly from rod. Flaws in the rod
surface may damage bearings and seal. Soft jaws
in a vise are recommended to prevent diaphragm
rod damage.
NOTE: Not all inner diaphragm plates
are threaded. Some models utilize a through hole
in the inner diaphragm plate. If required to separate
diaphragm assembly, place assembly in a vise,
gripping on the exterior cast diameter of the inner
plate. Turn the outer plate clockwise to separate the
assembly.
Always inspect diaphragms for wear cracks or
chemical attack. Inspect inner and outer plates for
deformities, rust scale and wear. Inspect intermediate
bearings for elongation and wear. Inspect diaphragm
rod for wear or marks.
Clean or repair if appropriate. Replace as required.
 Reassembly: There are two different types
of diaphragm plate assemblies utilized throughout the
Sandpiper product line: Outer plate with a threaded
stud, diaphragm, and a threaded inner plate.
Outer plate with a threaded stud, diaphragm, and
an inner plate with through hole. Secure threaded
inner plate in a vise. Ensure that the plates are being
installed with the outer radius against the diaphragm.
 Lightly lubricate, with a compatible material,
the inner faces of both outer and inner diaphragm plates
when using on non Overlay diaphragms (For EPDM
water is recommended). No lubrication is required.
  Push the threaded outer diaphragm
plate through the center hole of the diaphragm.
Note: Most diaphragms are installed with the
natural bulge out towards the fluid side. S05,
S07, and S10 non–metallic units are installed
with the natural bulge in towards the air side.
  Thread or place, outer plate stud into
the inner plate. For threaded inner plates, use a
torque wrench to tighten the assembly together.
Torque values are called out on the exploded view.
Repeat procedure for second side assembly.
Allow a minimum of 15 minutes to elapse after
torquing, then re-torque the assembly to compensate
for stress relaxation in the clamped assembly.
 Thread one assembly onto the diaphragm
rod with sealing washer (when used) and bumper.
  Install diaphragm rod assembly
into pump and secure by installing the outer
chamber in place and tightening the capscrews.
  On opposite side of pump, thread the
remaining assembly onto the diaphragm rod. Using a
torque wrench, tighten the assembly to the diaphragm
rod. Align diaphragm through bolt holes, always going
forward past the recommended torque. Torque values
are called out on the exploded view. NEVER reverse
to align holes, if alignment cannot be achieved
without damage to diaphragm, loosen complete
assemblies, rotate diaphragm and reassemble as
described above.
Complete assembly of entire unit.
One Piece Diaphragm Servicing (Bonded PTFE
with integral plate) The One Piece diaphragm has
a threaded stud installed in the integral plate at the
factory. The inner diaphragm plate has a through
hole instead of a threaded hole. Place the inner
plate over the diaphragm stud and thread the rst
diaphragm / inner plate onto the diaphragm rod only
until the inner plate contacts the rod. Do not tighten. A
small amount of grease may be applied between the
inner plate and the diaphragm to facilitate assembly.
Insert the diaphragm / rod assembly into the pump
and install the outer chamber. Turn the pump over
and thread the second diaphragm / inner plate onto
the diaphragm rod. Turn the diaphragm until the
inner plate contacts the rod and hand tighten the
assembly. Continue tightening until the bolt holes
align with the inner chamber holes. DO NOT LEAVE
THE ASSEMBLY LOOSE.
Diaphragm Servicing
IMPORTANT
Read these instructions completely,
before installation and start-up.
It is the responsibility of the
purchaser to retain this manual for
reference. Failure to comply with
the recommendations stated in this
manual will damage the pump, and
void factory warranty.
UNIVERSAL ALL SP
5: WET END

Declaration of Conformity
Signature of authorized person Date of issue
Authorised Representative:
IDEX Pump Technologies
R79 Shannon Industrial Estate
Shannon, Co. Clare, Ireland
Attn: Barry McMahon
Revision Level: F
Title
Director of Engineering
October 20, 2005
Date of revision
February 27, 2017
Manufacturer: Warren Rupp, Inc., 800 N. Main Street
Mansfield, Ohio, 44902 USA
Certifies that Air-Operated Double Diaphragm Pump Series: HDB, HDF, M Non-Metallic,
S Non-Metallic, M Metallic, S Metallic, T Series, G Series, U Series, EH and SH High Pressure,
RS Series, W Series, F Series, SMA and SPA Submersibles, and Tranquilizer®Surge Suppressors comply with
the European Community Directive 2006/42/EC on Machinery, according to Annex VIII.
This product has used Harmonized Standard EN809:2012, Pumps and Pump Units
for Liquids - Common Safety Requirements, to verify conformance.
5 - YEAR Limited Product Warranty
Warren Rupp, Inc. (“Warren Rupp”) warrants to the original end-use purchaser that no product sold by Warren Rupp that
bears a Warren Rupp brand shall fail under normal use and service due to a defect in material or workmanship within five
years from the date of shipment from Warren Rupp’s factory. Warren Rupp brands include Warren Rupp®,SANDPIPER®,
SANDPIPER Signature SeriesTM, MARATHON®, Porta-Pump®, SludgeMaster™ and Tranquilizer®.
The use of non-OEM replacement parts will void (or negate) agency certifications, including CE, ATEX, CSA, 3A and
EC1935 compliance (Food Contact Materials). Warren Rupp, Inc. cannot ensure nor warrant non-OEM parts to meet the
stringent requirements of the certifying agencies.
~ See sandpiperpump.com/content/warranty-certifications for complete warranty,
including terms and conditions, limitations and exclusions. ~
UNIVERSAL ALL SP
7: WARRANTY

DATE/APPROVAL/TITLE:
26 SEP 2018 David Roseberry, Director of Engineering
EU Declaration of Conformity
Manufacturer:
Warren Rupp, Inc.
A Unit of IDEX Corporation
800 North Main Street
Mansfield, OH 44902 USA
Warren Rupp, Inc. declares that Air Operated Double Diaphragm Pumps (AODD) and Surge Suppressors
listed below comply with the requirements of Directive 2014/34/EU and all applicable standards.
Applicable Standards
• EN ISO 80079-36: 2016 • EN ISO 80079-37: 2016 • EN ISO 60079-25: 2010
Hazardous Location Applied:
II 2 G Ex h IIC T5...225°C (T2) Gb
II 2 D Ex h IIIC T100°C...T200°C Db
II 2 G Ex h IIB T5...225°C (T2) Gb
II 2 D Ex h IIIB T100°C...T200°C Db
• Metallic pump models with external aluminum components (S Series, HD Series, G Series,
DMF Series, MSA Series, U Series, F Series, T Series, EH Series, SH Series, GH Series )
• Conductive plastic pump models with integral muffler (S Series, PB Series)
• Tranquilizer® surge suppressors
Hazardous Location Applied:
I M1 Ex h I Ma
II 1 G Ex h IIC T5...225°C (T2) Ga
II 1 D Ex h IIIC T100°C...T200°C Da
II 2 G Ex h ia IIC T5 Gb
II 2 D Ex h ia IIIC T100°C Db
II 2 G Ex h mb IIC T5 Gb
II 2 D Ex mb tb IIIC T100° Db
• Metallic pump models with no external aluminum (S series, HD Series, G series)
• Conductive plastic pumps equipped with metal muffler (S series, PB Series)
• ATEX pump models equipped with ATEX rated pulse output kit or solenoid kit
See “ATEX Details” page in user’s manual for more information
See “Safety Information” page for conditions of safe use
Meander 1051
6825 MJ Arnhem
The Netherlands
1. AODD Pumps and Surge Suppressors - Technical File No.: 20310400-1410/MER
2. AODD Pumps - EU Type Examination Certificate No.: DEKRA 18ATEX0094X - DEKRA Certification B.V. (0344)
ATEX
UNIVERSAL ALL SP