Idex Warren Rupp Sandpiper HDF3-M User manual

Table of Contents
Engineering Data and Performance Curve............................................................ 1
Explanation of Pump Nomenclature...................................................................... 2
Dimensions............................................................................................................ 3
Principle of Operation............................................................................................ 4
Installation and Start-Up........................................................................................ 4
Air Supply .............................................................................................................. 4
Air Inlet & Priming.................................................................................................. 4
Installation Guide................................................................................................... 5
ESADS+Plus®:
Externally Serviceable Air Distribution System ................................ 6
Air Exhaust ............................................................................................................ 7
Between Uses ....................................................................................................... 7
Check Valve Servicing........................................................................................... 7
Diaphragm Servicing ............................................................................................. 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 Conformity - Machinery .......................................................... 14
CE Declaration fo Conformity - ATEX.................................................................. 15
SERVICE AND OPERATING MANUAL
Model HDF3-M & HDF4-M
Type 2
II 2GD T5
See pages 15
hdf3mdl2sm-rev0316 ©Copyright 2016 Warren Rupp, Inc. All rights reserved.
Warren Rupp, Inc. • A Unit of IDEX Corporation • 800 N. Main St., Manseld, Ohio 44902 USA
Telephone [phone] • Fax [phone] • warrenrupp.com

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.
ATEX compliant pumps are suitable for use in explosive atmospheres when the equipment is properly grounded
in accordance with local electrical codes. Pumps equipped with electrically conductive diaphragms are suitable for
the transfer of conductive or non-conductive uids of any explosion group. When operating pumps equipped with
non-conductive diaphragms that exceed the maximum permissible projected area, as dened in EN 13461-1: 2009
section 6.7.5 table 9, the following protection methods must be applied:
• Equipment is always used to transfer electrically conductive uids or
• Explosive environment is prevented from entering the internal portions of the pump, i.e. dry running
For further guidance 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 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 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
Grounding ATEX Pumps
Use safe practices when lifting
kg
RECYCLING
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 ushed.

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 1
Heavy Duty Flap Valve
HDF3-M
HDF4-M Type 2
Air-Operated
Double Diaphragm Pump
ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA
INTAKE/DISCHARGE PIPE SIZE
HDF3-M: 3" 150# ANSI Flange
HDF4-M: 4" 150# ANSI Flange
CAPACITY
0 to 260 gallons per minute
(0 to 988 liters per minute)
AIR VALVE
No-lube, no-stall
design
SOLIDS-HANDLING
Up to nearly 3" (75mm)
HEADS UP TO
125 psi or 289 ft. of water
(8.8 Kg/cm2or 88 meters)
Quality System
ISO 9001 Certied
Environmental
Management System
ISO 14001 Certied
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
00
20
30
40
50
60
70
80
90
100
20 40 60 80 100 120 140 160 180 200 220 240 260
20(34)
60 PSI
40 PSI
40(68)
60(101.9)
80(135.9)
100(169.9)
120(203.9)
140(237.9)
160(271.8)
180(305.8)
20 PSI Air Inlet Pressure
100 PSI
80 PSI
Liters per minute
CAPACITY
0 100 200 300 400 500 600 700 800 900 1000
AIR CONSUMPTION
SCFM (M3/hr)
PSI
BAR
HEAD
0
1
2
3
4
5
6
7
200(339.8)
MODEL HDF3-M /HDF4-M Performance Curve
Performance based on the following: elastomer fitted pump, flooded suction,
water at ambient conditions. The use of other materials and varying hydraulic
conditions may result in deviations in excess of 5%.

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 NU 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 NH 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 NU A B 390
DS2II S S
To order a pump or replacement parts, rst 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 specic applications, always consult “Chemical Resistance Chart" Technical Bulletin
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.
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 ex 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°F -40°F
135°C -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 specication 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.

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 3
Dimensions: HDF3-M & HDF4-M
Dimensions are ± 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 1/2"
diameter bolt circle
Dimension "A" 30 1/4" (768) 31" (787)
Dimension "B" 3 3/8" (92) 6 5/8" (168)

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 4
PRINCIPLE OF PUMP OPERATION
This ap swing valve pump is powered by compressed air and is a 1:1
pressure ratio design. It alternately pressurizes the inner side of one diaphragm
chamber, while simultaneously exhausting the other inner chamber. This causes the
diaphragms, which are connected by a common rod, to move endwise. Air pressure
is applied over the entire surface of the diaphragm, while liquid is discharged from
the opposite side. The diaphragm operates under a balanced condition during the
discharge stroke, which allows the unit to be operated at discharge heads over 200
feet (61 meters) of water head.
Since the diaphragms are connected by a common rod, secured by plates to the
center of the diaphragms, one diaphragm performs the discharge stroke, while the
other is pulled to perform the suction stroke in the opposite chamber.
For maximum diaphragm life, keep the pump as close to the liquid being pumped
as possible. Positive suction head in excess of 10 feet of liquid (3.048 meters) may
require a back pressure regulating device. This will maximize diaphragm life.
Alternate pressuring and exhausting of the diaphragm chamber is performed by
means of an externally mounted, pilot operated, four-way spool type air distribution
valve. When the spool shifts to one end of the valve body, inlet air pressure is applied
to one diaphragm chamber and the other diaphragm chamber exhausts. When the
spool shifts to the opposite end of the valve body, the porting of chambers is reversed.
The air distribution valve spool is moved by an internal pilot valve which alternately
pressurizes one side of the air distribution valve spool, while exhausting the other
side. The pilot valve is shifted 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 are manifolded together with a suction and discharge ap-type
valve for each chamber, maintaining ow in one direction through the pump
INSTALLATION & START-UP
Locate the pump as close to the product being pumped as possible, keeping suc-
tion line length and number of ttings to a minimum. Do not reduce line size.
For installations of rigid piping, short exible sections of hose should be installed
between pump and piping. This reduces vibration and strain to the piping system. A
surge suppressor is recommended to further reduce pulsation in ow.
This pump was tested at the factory prior to shipment and is ready for operation.
It is completely self-priming from a dry start for suction lifts of 20 feet (6.096 meters)
or less. For suction lifts exceeding 20 feet of liquid, ll the chambers with liquid prior
to priming.
AIR SUPPLY
Air supply pressures cannot exceed 125 psi (8.61 bar). Connect the pump air inlet
to an air supply of sufcient capacity and pressure required for desired performance.
When the air line is solid piping, use a short length of exible hose [not less than
3/4" (19mm) in diameter] between pump and piping to eliminate strain to pipes.
AIR INLET & PRIMING
For start-up, open an air valve approximately 1/2" to 3/4" turn. After the unit primes,
an air valve can be opened to increase ow as desired. If opening the valve increases
cycling rate, but does not increase ow rate, cavitation has occurred, and the valve
should be closed slightly.
For the most efcient use of compressed air and the longest diaphragm life, throttle
the air inlet to the lowest cycling rate that does not reduce ow.
SERVICE AND OPERATING MANUAL
Model HDF3-M & HD4F-M
Type 2
Heavy Duty Flap Valve
II 2GD T5
See pages 16 & 17
for ATEX ratings

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 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 from
Distributor
Available from
Warren Rupp

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 6
A NOTE ABOUT AIR VALVE LUBRICATION
The SANDPIPER pump’s pilot valve and main air valve assemblies are designed
to operate WITHOUT lubrication. This is the preferred mode of operation. There
may be instances of personal preference, or poor quality air supplies when lubrica-
tion of the compressed air supply is required. The pump air system will operate with
properly lubricated compressed air supplies. Proper lubrication of the compressed air
supply would entail the use of an air line lubricator (available from Warren Rupp) set
to deliver one drop of 10 wt., non-detergent oil for every 20 SCFM of air the pump
consumed at its point of operation. Consult the pump’s published Performance Curve to
determine this.
It is important to remember to inspect the sleeve and spool set routinely. It should
move back and forth freely. This is most important when the air supply is lubricated.
If a lubricator is used, oil accumulation will, over time, collect any debris from the
compressed air. This can prevent the pump from operating properly.
Water in the compressed air supply can create problems such as icing or
freezing of the exhaust air causing the pump to cycle erratically, or stop operating. This
can be addressed by using a point of use air dryer to supplement a plant’s air drying
equipment. This device will remove excess water from the compressed air supply and
alleviate the icing or freezing problem.
ESADS+PLUS:
EXTERNALLY SERVICEABLE AIR DISTRIBUTION SYSTEM
Please refer to the exploded view drawing and parts list in the Service Manual sup-
plied with your pump. If you need replacement or additional copies, contact your local
Warren Rupp Distributor, or the Warren Rupp factory Literature Department at the
number shown below. To receive the correct manual, you must specify the MODEL
and TYPE information found on the name plate of the pump.
MODELS WITH 1" SUCTION/DISCHARGE OR LARGER,
AND METAL CENTER SECTIONS:
The main air valve sleeve and spool set is located in the valve body mounted on
the pump with four hex head capscrews. 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 head capscrews (each end) on the end caps of the
valve body assembly. With the end caps removed, slide the spool back and forth in
the sleeve. The spool is closely sized to the sleeve and must move freely to allow for
proper pump operation. An accumulation of oil, dirt or other contaminants from the
pump’s air supply, or from a failed diaphragm, may prevent the spool from moving
freely. This can cause the spool to stick in a position that prevents the pump from
operating. If this is the case, the sleeve and spool set should be removed from the
valve body for cleaning and further inspection.
Remove the spool from the sleeve. Using an arbor press or bench vise (with an
improvised mandrel), press the sleeve from the valve body. Take care not to damage
the sleeve. At this point, inspect the o-rings on the sleeve for nicks, tears or abrasions.
Damage of this sort could happen during assembly or servicing. A sheared or cut
o-ring can allow the pump’s compressed air supply to leak or bypass within the air
valve assembly, causing the pump to leak compressed air from the pump air exhaust
or not cycle properly. This is most noticeable at pump dead head or high discharge
pressure conditions. Replace any of these o-rings as required or set up a routine,
preventive maintenance schedule to do so on a regular basis. This practice should
include cleaning the spool and sleeve components with a safety solvent or equivalent,
inspecting for signs of wear or damage, and replacing worn components.
To re-install the sleeve and spool set, lightly lubricate the o-rings on the sleeve
with an o-ring assembly lubricant or lightweight oil (such as 10 wt. air line lubricant).
Re-install one end cap, gasket and bumper on the valve body. Using the arbor press
or bench vise that was used in disassembly, carefully press the sleeve back into the
valve body, without shearing the o-rings. You may have to clean the surfaces of the
valve body where the end caps mount. Material may remain from the old gasket. Old
material not cleaned from this area may cause air leakage after reassembly. Take care

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 7
that the bumper stays in place allowing the sleeve to press in all the way. Reinstall the
spool, opposite end cap, gasket and bumper on the valve body. After inspecting and
cleaning the gasket surfaces on the valve body and intermediate, reinstall the valve
body on the pump using new gaskets. Tighten the four hex head capscrews evenly
and in an alternating cross pattern.
AIR EXHAUST
If a diaphragm fails, the pumped liquid or fumes can enter the air end of the pump,
and be exhausted into the atmosphere. When pumping hazardous or toxic materials,
pipe the exhaust to an appropriate area for safe disposition.
This pump can be submerged if materials of construction are compatible with the
liquid. The air exhaust must be piped above the liquid level. Piping used for the air
exhaust must not be smaller than 1" (2.54 cm). Reducing the pipe size will restrict
air ow and reduce pump performance .When the product source is at a higher level
than the pump (ooded suction), pipe the exhaust higher than the product source to
prevent siphoning spills.
Freezing or icing-up of the air exhaust can occur under certain temperature and
humidity conditions. Use of an air dryer unit should eliminate most icing problems.
BETWEEN USES
When used for materials that tend to settle out or transform to solid form, the pump
should be completely ushed after each use, to prevent damage. Product remaining
in the pump between uses could dry out or settle out. This could cause problems
with valves and diaphragms at re-start. In freezing temperatures, the pump must be
drained between uses in all cases.
FLAP VALVE SERVICING
Valve inspection requires removal of 3/8" hex nuts 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 inspection and cleaning is pos-
sible. If parts are to be replaced, remove the self-locking nuts and all parts
are accessible.
DIAPHRAGM SERVICING
Diaphragms can be inspected or the diaphragm assembly removed without remov-
ing the suction and discharge anges. Remove (8) nuts around the chamber ange,
and the housing assembly will pull off. Flap valves can be inspected for proper
seating at this point as well as the diaphragm. Use care to keep foreign matter from
behind the diaphragm. The opposite diaphragm may be inspected by the same
procedure. If either diaphragm has to be replaced, follow closely these steps:
Pull the outer diameter of one diaphragm off the (8) capscrews. NOTE: One side
only! On the free diaphragm assembly, use a 3/8" allen wrench to turn the assembly
(diaphragm, plates and screw) loose from the shaft. Once the assembly has turned,
it will turn out by hand by use of the diaphragm. Now the opposite diaphragm as-
sembly and the drive shaft will pull free from the capscrews and pump
intermediate assembly. The interior components consisting of sleeve bearings, rod
seals, and pilot valve actuator bushings are now accessible for service if required.
Hold the shaft in a clamping device making sure to protect surface of shaft so as
not to scratch or mar it in any way. The diaphragm assembly will turn loose. To dis-
assemble the components, turn a 1/4"-20 capscrew by hand into the tapped hole in
the inner plate. This keeps the plate from turning while the socket head capscrew is
removed. To do this, place assembly in a vise so the two protruding ends of screws
are loose in the vise jaws (about 3/4" apart). Turn the center screw loose from the
back plate and the assembly will come apart.

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 8
REASSEMBLY
All procedures for reassembling the pump are the reverse of the previous
instructions with further instructions as shown:
1. The diaphragm assemblies are to be installed with the natural bulge outward
or toward the head of the center screw. Make sure both plates are installed with
outer radii against the diaphragm. After all components are in position in a vise and
hand tight, set a torque wrench for 480 inch pounds (40 ft. pounds) (54.23 Newton
meters) or, 600 inch pounds (50 ft. pounds) (67.79 Newton meters) for Santoprene,
using a (3/8") allen head socket. After each diaphragm sub assembly has been
completed, thread one assembly into the shaft (held near the middle in a vise having
soft jaws to protect the nish) making sure the stainless steel washer is in place on
the capscrew.
Make sure 1/4"-20 mounting screw has been removed and that the bumper (Item
#19 on drawing) is in place in the shaft.
Install this sub assembly into the pump and secure by placing the outer chamber
housing and capscrews on the end with the diaphragm. This will hold the assembly
in place while the opposite side is installed. Make sure the last diaphragm assembly
is torqued to 30 ft. lbs. (40.67 Newton meters) before placing the outer diaphragm
over the capscrews. If the holes in the diaphragm ange do not line up with the holes
in the chamber ange, turn the diaphragm assembly in the direction of tightening
to align the holes so that the capscrews can be inserted. This nal torquing of the
last diaphragm assembly will lock the two diaphragm assemblies together. 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 some preload over the retainer hinge pad. This is done to insure proper face contact
with the seat. After all parts are in place, tighten the lock nuts down on the assembly
to the point where visual inspection shows that seat and valve face mate without gap.
This is important for dry prime. However, after priming action has started, valves will
function due to differential pressure without concern or trouble.
PILOT VALVE
The pilot valve assembly is accessed by removing the main air distribution valve
body from the pump and lifting the pilot valve body out of the intermediate housing.
Most problems with the pilot valve can be corrected by replacing the o-rings.
Always grease the spool prior to inserting it into the sleeve. If the sleeve is removed
from the body, reinsertion must be at the chamfered side. Grease the o-rings to slide
the sleeve into the valve body. Securely insert the retaining ring around the sleeve.
When reinserting the pilot valve, push both plungers (located inside the intermediate
bracket) out of the path of the pilot valve spool ends to avoid damage.
PILOT VALVE ACTUATOR
Bushings for the pilot valve actuators are threaded into the intermediate bracket
from the outside. The plunger may be removed for inspection or replacement. First
remove the air distribution valve body and the pilot valve body from the pump. The
plungers can be located by looking into the intermediate. It may be necessary to
use a ne piece of wire to pull them out. The bushing can be turned out through the
inner chamber by removing the outer chamber assembly. Replace the bushings if pins
have bent.

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 9
WARRANTY:
This unit is guaranteed for a period of ve years against defective material and workmanship.
RECOMMENDED WARREN RUPP ACCESSORIES
TO MAXIMIZE PUMP PERFORMANCE:
• Tranquilizer® Surge Suppressor: For nearly pulse-free ow.
• Warren Rupp Filter/Regulator: For modular installation and service
convenience.
• Warren Rupp Speed Control: For manual or programmable process
control. Manual adjustment or 4-20mA reception.
For more detailed information on these accessories,
contact your local Warren Rupp Factory-Authorized Distributor,
or Warren Rupp corporate headquarters.
PROBLEM
Pump cycles but will not pump. (Note: higher suction lifts require faster cycling speed for priming.)
POSSIBLE CAUSES:
A. Air leak in suction line.
B. Excessive suction lift.
C. Flap valve not seating properly.
D. Leakage at joint of suction manifold or elbow ange.
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 any portion of pump.)
POSSIBLE CAUSES:
A. Discharge hose or line plugged, or discharge head requirement greater than air supply pressure.
(Disconnect discharge line to check.)
B. Spool in air distribution valve not shifting. (Remove end cap and check spool — must slide freely.)
C. Diaphragm ruptured. (Air will escape out discharge line in this case.)
D. Blockage in diaphragm chamber preventing movement. (Shut off air supply and reopen after pressure is relieved.)
PROBLEM
Uneven discharge ow. (Indicates one chamber not operating properly.)
POSSIBLE CAUSES:
A. Flap valve not sealing properly in one chamber.
B. Diaphragm failure in one chamber.
C. Air leak at suction manifold joint or elbow ange one side.
For additional information, see the Warren Rupp Troubleshooting Guide.
TROUBLESHOOTING - For additional information, see the Warren Rupp Troubleshooting Guide.

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 10
000 Assembly, sub-assembly;
and some purchased items
010 Cast Iron
012 Powered Metal
015 Ductile Iron
020 Ferritic Malleable Iron
025 Music Wire
080 Carbon Steel, AISI B-1112
100 Alloy 20
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)
123 410 Stainless Steel
(Wrought Martensitic)
148 Hardcoat Anodized Aluminum
149 2024-T4 Aluminum
150 6061-T6 Aluminum
151 6063-T6 Aluminum
152 2024-T4 Aluminum (2023-T351)
154 Almag 35 Aluminum
155 356-T6 Aluminum
156 356-T6 Aluminum
157 Die Cast Aluminum Alloy #380
158 Aluminum Alloy SR-319
159 Anodized Aluminum
162 Brass, Yellow, Screw Machine Stock
165 Cast Bronze, 85-5-5-5
166 Bronze, SAE 660
170 Bronze, Bearing Type, Oil Impregnated
175 Die Cast Zinc
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
310 PVDF Coated
313 Aluminum, White Epoxy Coated
330 Zinc Plated Steel
331 Chrome Plated Steel
332 Aluminum, Electroless Nickel Plated
333 Carbon Steel, Electroless
Nickel Plated
335 Galvanized Steel
336 Zinc Plated Yellow Brass
337 Silver Plated Steel
340 Nickel Plated
342 Filled Nylon
351 Food Grade Santoprene; Color: NATURAL
MATERIAL CODES
THE LAST 3 DIGITS OF PART NUMBER
353 Geolast; Color: BLACK
354 Injection Molded #203-40
Santoprene- Duro 40D +/-5; Color: RED
355 Thermal Plastic
356 Hytrel; Color: BLUE
357 Injection Molded Polyurethane;
Color: GREEN
358 Urethane Rubber; Color: NATURAL
(Some Applications)
(Compression Mold)
359 Urethane Rubber; Color: NATURAL
360 Nitrile Rubber; Color Coded: RED
361 Nitrile
363 FKM (Fluorocarbon).
Color Coded: YELLOW
364 E.P.D.M. Rubber. Color Coded: BLUE
365 Neoprene Rubber;
Color 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 Density Polypropylene
379 Conductive Nitrile;
Color Coded: RED & SILVER
384 Conductive Neoprene;
Color Coded: GREEN & SILVER
405 Cellulose Fibre
408 Cork and Neoprene
425 Compressed Fibre
426 Blue Gard
440 Vegetable Fibre
465 Fibre
500 Delrin 500
501 Delrin 570
502 Conductive Acetal, ESD-800;
Color: BLACK
503 Conductive Acetal, Glass-Filled
Color: BLACK; Color Coded: YELLOW
505 Acrylic Resin Plastic
506 Delrin 150
520 Injection Molded PVDF; Color: NATURAL
521 Injection Molded Conductive PVDF;
Color: BLACK; Color Coded: LIGHT
GREEN
540 Nylon
541 Nylon
542 Nylon
544 Nylon Injection Molded
550 Polyethylene
551 Glass Filled Polypropylene; Color: BLACK
552 Unlled Polypropylene; Color: NATURAL
555 Polyvinyl Chloride
556 Black Vinyl
557 Conductive Polypropylene;
Color: BLACK; Color Coded: SILVER
558 Conductive HDPE; Color: BLACK
Color Coded: SILVER
559 Conductive Polypropylene; Color: BLACK
Color Coded: SILVER
570 Rulon II
580 Ryton
590 Valox
591 Nylatron G-S
592 Nylatron NSB
600 PTFE (virgin material)
Tetrauorocarbon (TFE)
601 PTFE (Bronze and moly lled)
602 Filled PTFE
603 Blue Gylon
604 PTFE
606 PTFE
607 Envelon
608 Conductive PTFE; Color: BLACK
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 is a registered
tradename of E.I. DuPont.
Gylon is a registered tradename
of Garlock, Inc.
Nylatron is a registered tradename
of Polymer Corp.
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.
PortaPump, Tranquilizer and SludgeMaster are
registered tradenames of Warren Rupp, Inc.

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 11
ITEM TOTAL
NO. PART NUMBER DESCRIPTION RQD.
1 070.006.170. Bearing, Sleeve 2
2 114.002.010. Bracket, Intermediate 1
3 132.022.360. Bumper 2
4 135.016.162. Bushing, Threaded, with O-Ring 2
5 620.011.114. Plunger, Actuator 2
7 360.041.379. Gasket, Valve Body 1
8 560.001.360. O-Ring 2
9 132.014.358. Bumper, Valve Spool 2
10 095.073.001. Pilot Valve Assembly 1
10-A 095.070.558. Pilot Valve Body 1
10-B 755.025.000. Sleeve, with O-Ring 1
10-C 560.033.360. O-Ring (Sleeve) 4
10-D 775.026.000. Spool, with O-Ring 1
10-E 560.023.360. O-Ring (Spool) 2
10-F 675.037.080. Retaining Ring 1
11 165.011.010. Cap, End 2
12 360.048.425. Gasket, Valve Body 1
13 360.010.425. Gasket, End Cap 2
14 560.020.360. O-Ring 6
15 031.018.000. Sleeve & Spool Set 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. Mufer, Exhaust 1
22 685.041.120. Rod, Diaphragm 1
23 115.068.080. Bracket, Support 1
24 170.024.330. Capscrew, Hex Head 8
25 900.006.330. Washer, Lock 8
26 720.004.360. Seal, U-Cup 2
27 722.007.115. Seat, Flap Valve-Angle 4
28 326.004.080. Mounting Foot 2
29 132.002.360. Bumper 2
30 612.090.010. Plate, Outer Diaphragm Assy. 2
31 807.046.330. Stud 2
32 612.124.010. Plate, Inner Diaphragm 2
33 286.098.365. Diaphragm 2
286.098.360. Diaphragm 2
286.098.354. Diaphragm 2
34 900.003.330. Washer, Lock 22
35 545.008.330. Nut, Hex 16
39 807.017.330. Stud 8
40 618.003.330. Pipe Plug 4
41 900.006.330. Washer, Lock 4
42 170.012.330. Capscrew, Hex Head 6
43 360.013.379. Gasket, Seat 4
360.013.384. Gasket, Seat 4
SERVICE AND OPERATING MANUAL
Models HDF3-M &
HDF4-M Type 2
II 2GD T5
See pages 16 & 17
for ATEX ratings

hdf3mdl2sm-rev0316 Model HDF3-M & HDF4-M Page 12
ITEM TOTAL
NO. PART NUMBER DESCRIPTION RQD.
44 360.014.379. Gasket, Flange 4
360.014.384. Gasket, Flange 4
45 670.006.115. Retainer, Flap Valve 4
46 807.016.330. Stud 12
47 170.023.330. Capscrew, Hex Head 4
48 545.007.330. Nut, Hex 20
49 807.018.110. Stud 8
50 547.002.115. Nut, Stop 8
51 334.020.000. Flange, Follower 4
52 360.021.000. Gasket 4
53 170.055.330. Capscrew, Hex Head 12
54 901.006.330. Flat Washer 14
55 170.095.330. Capscrew, Hex Head 2
56 196.060.010. Chamber, Outer 2
57 312.015.010. Elbow, Suction 2
58 312.016.010. Elbow, Discharge 2
59 518.045.010. Manifold 2
60 338.011.354. Flap Valve 4
338.011.356. Flap Valve 4
338.011.357. Flap Valve 4
338.008.360. Flap Valve 4
338.008.365. Flap Valve 4
61 570.002.360. Pad, Hinge,Not used with Santoprene 4
570.002.364 Pad, Hinge,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 2
Not Shown:
031.021.010. Valve Body Assembly 1
(consists of Items 9, 11,
13, 14, 15, 16, 17)
HDF4-M Type 2
63 334.037.010. Flange, Adapter 2
64 807.005.330. Stud 8
65 900.007.330. Washer, Lock 8
66 545.009.330. Nut, Hex 8
67 360.036.426. Gasket, Flange 2
476.251.000. AIR END KIT
Seals, O-Rings, Gaskets, Air Valve Sleeve and Spool,
Pilot Valve Assembly
476.316.000. AIR END WEAR KIT
Seals, O-Rings, Bumpers, Gaskets
476.250.360. WETTED END KIT
Buna Diaphragms Flap Valves, Hinge Pads, Gaskets
476.250.365. WETTED END KIT
Neoprene Diaphragms, Flap Valves, Hinge Pads, Gaskets
476.250.632. WETTED END KIT
Neoprene Diaphragms and Hinge Pads, Hytrel Flap
Valves, Gaskets
476.250.354. WETTED END KIT
Santoprene Diaphragms and Flap Valves, EPDM Hinge Pads
and Wear Pads, Nitrile Gaskets
Parts underlined are only available for sale in kits

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

Declaration of Conformity
Signature of authorized person Date of issue
Printed name of authorized person
Revision Level: F
Title
David Roseberry Engineering Manager
October 20, 2005
Date of revision
August 23, 2012
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, 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 EN809:1998+A1:2009, 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®, MARATHON®, PortaPump®, SludgeMaster™ and Tranquilizer®.
~ See sandpiperpump.com/content/warranty-certifications for complete warranty,
including terms and conditions, limitations and exclusions. ~

Manufacturer:
Warren Rupp, Inc.
A Unit of IDEX Corportion
800 North Main Street
P.O. Box 1568
Mansfield, OH 44902 USA
EC / EU Declaration of Conformity
The objective of the declaration described is in conformity with the relevant Union harmonisation
legislation: Directive 94/9/EC (until April 19, 2016) and Directive 2014/34/EU (from April 20, 2016).
The harmonised standards have been compared to the applicable standards
used for certification purposes and no changes in the state of the art technical
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: KEMA 09ATEX0071 X
DEKRA Certification B.V. (0344)
Meander 1051
6825 MJ Arnhem
The Netherlands
Applicable Standard:
EN13463-1: 2001
EN13463-5: 2003
EN60079-25: 2004
Harmonised Standard:
EN13463-1: 2009
EN13463-5: 2011
EN60079-25:2010
David Roseberry, Director of Engineering
DATE/APPROVAL/TITLE:
18 March 2016
Hazardous Locations Applied:
I M1 c
II 2 G Ex ia c IIC T5
II 2 D Ex c iaD 20 IP67 T100°C
II 2 G Eex m c II T5
II 2 D c IP65 T100°C
II 1 G c T5
II 1 D c T100°C
II 2 G c T5
II 2 D c T100°C