Warren rupp SANDPIPER HP20 Parts list manual


Model HP20
Metallic - High Pressure
Design Level 1
Certied Quality

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
ISO 9001 Certied
ISO 14001 Certied
1: PUMP SPECS2: INSTAL & OP3: EXP VIEW4: AIR END5: WET END6: OPTIONAL7: WARRANTY
SERVICE & OPERATING MANUAL
Original Instructions

hp20mdl1sm-rev0621
2 • Model HP20 High Pressure sandp ipe rpu mp.c om
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

hp20mdl1sm-rev0621
Model HP20 High Pressure • 3
sa ndp ipe rpu mp.c om
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



hp20mdl1sm-rev0621
4 • Model HP20 High Pressure 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 ...5
• Principle of Pump Operation
• Recommended Installation Guide
• Troubleshooting Guide
SECTION 3: EXPLODED VIEW ..........................8
• Composite Repair Parts Drawing
• Composite Repair Parts List
• Material Codes
SECTION 4: AIR END ......................................11
• Air Distribution Valve Assembly
• Air Valve with Stroke Indicator Assembly
• Pilot Valve Assembly
• Intermediate Assembly
SECTION 5: WET END.....................................19
• Diaphragm Drawings
• Diaphragm Servicing
SECTION 6: OPTIONAL CONFIGURATIONS .21
• Solenoid Shifted Air Valve
SECTION 7: WARRANTY & CERTIFICATES . . 23
• Warranty
• CE Declaration of Conformity - Machinery
• ATEX Declaration of Conformity
1: PUMP SPECS2: INSTAL & OP3: EXP VIEW4: AIR END5: WET END6: OPTIONAL7: WARRANTY

hp20mdl1sm-rev0621
Model HP20 High Pressure • 5
sa ndp ipe rpu mp.c om
Explanation of Pump Nomenclature
ATEX Detail
Check Valve Seat
S StainlessSteel
Non-Wetted Material Options
A PaintedAluminum
Porting Options
N NPTThreads
B BSP(Tapered)Threads
Pump Style
I InlineManifold
Pump Options
6 MetalMu󰀪er
Kit Options
 None
Pump Brand
HP SANDPIPER® HighPressure
Pump Size
 2"
Check Valve Type
B Ball
W WeightedBall
Design Level
1 DesignLevel
Wetted Material
A Aluminum
S StainlessSteel
Diaphragm/Check Valve Materials
B Nitrile/Nitrile
M Santoprene/PTFE
N Neoprene/Neoprene
T Neoprene-PTFE/PTFE
Your Serial #: (ll in from pump nameplate) _____________________________________
Pump Pump Check Design Wetted Diaphragm/ Check Valve Non-Wetted Porting Pump Pump Kit
Brand Size Valve Level Material Check Valve Seat Material Options Style Options Options
HP XX X X X X X X X X X XX
Model #:
HP
__ ____ __ __ __ __ __ __ __ __ __ ____
(ll in from pump
nameplate)
Your Model #:
IEC EEX m T4
 Pump models equipped with these
explosion-proof solenoid kit options E1, E3,
E5, E7, E8 or E9, are certied and approved
by the above agencies. They are NOT ATEX
compliant.
ATEX Details
Wetted
Material
Options
Non-Wetted
Material
Options
Pump
Options

Options
II2GExhIICT5...225°C(T2)Gb
II2DExhIIICT100°C...T200°CDb A,S A6 00
1: PUMP SPECS

hp20mdl1sm-rev0621
6 • Model HP20 High Pressure sa ndp ipe rpu mp.c om
0
40
80
120
160
200
240
0 10 20 30 40 50 60 70 80 90 100
PSI
BAR
GPM
HEAD
LPM
CAPACITY
20 SCFM (34
m3/hr)
40 SCFM (68
m3/hr)
16
10
12
14
8
6
4
2
0
050 100 150 200 250 300 350
60 SCFM (102
m3/hr)
80 SCFM (136
m3/hr)
100 SCFM (170 m3/hr)
MODEL HP20 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%.
116 PSI (8.0 BAR)
Performance
HP20 HIGH PRESSURE
SUCTION/DISCHARGE PORT SIZE
• 2" NPT (internal)
• 2" BSP Tapered (internal)
CAPACITY
• 0 to 92 gallons per minute
(0 to 348 liters per minute)
AIR DISTRIBUTION VALVE
• No-lube, no-stall design
SOLIDS-HANDLING
• Up to .25 in. (6mm)
HEADS UP TO
• 232 PSI (535 ft)
16.0 BAR (163 meters)
DISPLACEMENT/STROKE
• .51 Gallon / 1.9 liter
MAXIMUM OPERATING PRESSURE
• 116 PSI (8.0 BAR)
SHIPPING WEIGHT
• Aluminum 113.5 lbs. (51.5kg)
• Stainless Steel 165.3 lbs. (75kg)
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:
1: PUMP SPECS

hp20mdl1sm-rev0621
Model HP20 High Pressure • 7
sa ndp ipe rpu mp.c om

Dimensions in inches (mm dimensions in brackets). Dimensional Tolerance:±1/8" (± 3mm)
The dimensions on this drawing are for reference only. A certied drawing can be requested if physical dimensions are needed.
Dimensional Drawings
8.80
224
15.77
401
24.61
625
26.08
663
13.39
340
11.10
282
16.14
410
4.67
119
24.57
624
AIR INLET
3/4" FNPT
1.85
47
22.76
578
13.39
340
10.00
254
12.44
316
DISCHARGE OUTLET
2" FNPT [2" FBSPT]
EXHAUST PORT
SUCTION INLET
2" FNPT [2" FBSPT]
16.14
410
8.94
227
10.00
254
18.50
470
4X
.55
14
1: PUMP SPECS

hp20mdl1sm-rev0621
8 • Model HP20 High Pressure sa ndp ipe rpu mp.c om

Dimensions in inches (mm dimensions in brackets). Dimensional Tolerance:±1/8" (± 3mm)
The dimensions on this drawing are for reference only. A certied drawing can be requested if physical dimensions are needed.
Dimensional Drawings
10.57
269
18.72
476
10.59
269
14.39
366
4.33
110
21.34
542
22.81
580
21.06
535
29.29
744
12.44
316
EXHAUST PORT
AIR INLET
3/4" FNPT [3/4" FBSP]
2.52
64
18.82
478
12.60
320
10.59
269
SUCTION PORT
2" FNPT [2" FBSPT]
DISCHARGE PORT
2" FNPT [2" FBSPT]
10.24
260
21.06
535
4X
.34
9
22.24
565
12.60
320
1: PUMP SPECS

hp20mdl1sm-rev0621
Model HP20 High Pressure • 9
sa ndp ipe rpu mp.c om
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.
Principle of Pump Operation
Air Line
Discharged
Fluid
Discharge
Stroke Suction
Stroke
Primed
Fluid
SAFE AIR
EXHAUST
DISPOSAL
AREA
PUMP INSTALLATION AREA
1" DIAMETER AIR
EXHAUST PIPING
1" DIAMETER AIR
EXHAUST PIPING
1" DIAMETER AIR
EXHAUST PIPING
MUFFLER
LIQUID
LEVEL
SUCTION
LINE
LIQUID
LEVEL
SUCTION
LINE
MUFFLER
MUFFLER
SUBMERGED ILLUSTRATION
Pump can be submerged if the pump materials of construction
are compatible with the liquid being pumped. The air exhaust
must be piped above the liquid level. When the pumped product
source is at a higher level than the pump (ooded suction
condition), pipe the exhaust higher than the product source to
prevent siphoning spills.
2: INSTAL & OP

hp20mdl1sm-rev0621
10 • Model HP20 High Pressure sa ndp ipe rpu mp.c om
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.
1 Surge Suppressor
Flexible Connector
Pipe Connection
(Style Optional)
Shut-Off Valve
Pressure Gauge
Drain Port
Muffler
(Optional Piped Exhaust)
Flexible
Connection
3 Dryer
2 Filter Regulator
Unregulated Air
Supply to Surge
Suppressor
Shut Off
Valve
Flexible Connector
Pipe Connection
(Style Optional) Drain Port
Shut-Off Valve
Compound
Gauge
Note : Surge Suppressor and
Piping, including air line,
must be supported after
the flexible connections.
Check
Valve
Air Inlet
Suction
Discharge
4 Lubricator
Recommended Installation Guide

SurgeSuppressor
Filter/Regulator
AirDryer
Lubricator
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.
2: INSTAL & OP

hp20mdl1sm-rev0621
Model HP20 High Pressure • 11
sa ndp ipe rpu mp.c om
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.
2: INSTAL & OP

hp20mdl1sm-rev0621
12 • Model HP20 High Pressure sa ndp ipe rpu mp.c om
OVERLAY OPTION
WET SIDE EXPLODED ASSEMBLY
TORQUE SETTINGS
A
B
D
- 948 In-Lbs (108Nm)
- 216 In-Lbs (24 Nm)
- 240 In-Lbs (27 Nm)
- 192 In-Labs (22 Nm)
B
B
B
B
D
A
40
*optional ground strap
available for purchase separately

 WETENDKIT-BUNA
  BunaDiaphragms,BunaCheckBalls,BunaO-Rings
 WETENDKIT-NEOPRENE
  NeopreneDiaphragms,NeopreneCheckBalls,NeopreneO-Rings
 WetEndKit-PTFE
  PTFEDiaphragms,NeopreneBackupDiaphragms,PTFECheckBalls,FEPO-Rings
 WetEndKit-SANTOPRENE/PTFE
  SantopreneDiaphragms,PTFECheckBalls,EPDMO-Rings
Composite Repair Parts Drawing -Aluminum Model

3: EXP VIEW

hp20mdl1sm-rev0621
Model HP20 High Pressure • 13
sa ndp ipe rpu mp.c om
WET SIDE EXPLODED ASSEMBLY
OVERLAY OPTION
TORQUE SETTINGS
A
B
D
- 948 In-Lbs (108Nm)
- 216 In-Lbs (24 Nm)
- 240 In-Lbs (27 Nm)
- 192 In-Labs (22 Nm)
D
A
A
36
41
56
42
43
41
36
41
*optional ground strap
available for purchase separately

 WETENDKIT-BUNA
  BunaDiaphragms,BunaCheckBalls,BunaO-Rings
 WETENDKIT-NEOPRENE
  NeopreneDiaphragms,NeopreneCheckBalls,NeopreneO-Rings
 WetEndKit-PTFE
  PTFEDiaphragms,NeopreneBackupDiaphragms,PTFECheckBalls,FEPO-Rings
 WetEndKit-SANTOPRENE/PTFE
  SantopreneDiaphragms,PTFECheckBalls,EPDMO-Rings
Composite Repair Parts Drawing -Stainless Model

3: EXP VIEW

hp20mdl1sm-rev0621
14 • Model HP20 High Pressure sa ndp ipe rpu mp.c om
43
32
40
222222
12
4848
17 49
49
46
29
46
4848
12
222222
40
10
43
14
2121
20
20
43
3
40
4545
46
18 21
21
39
46
2323
19
37
3
43
1616
15
11
TORQUE SETTINGS
A
B
D
- 948 In-Lbs (108Nm)
- 216 In-Lbs (24 Nm)
- 240 In-Lbs (27 Nm)
- 192 In-Labs (22 Nm)
A
13
24 13
D
D
D
D

 AIRENDKIT
 AirSideDiaphragm,AirHoses,SealsandO-Rings
Composite Repair Parts Drawing

3: EXP VIEW

hp20mdl1sm-rev0621
Model HP20 High Pressure • 15
sa ndp ipe rpu mp.c om
Item Part Number Description Qty
1 1B015 BUMPER 1
2 1B021 PLATE, INNER DIAPHRAGM 2
3 1B026 CHAMBER, INNER AIR 2
4 1B039 DIAPHRAGM, OVERLAY 2
5 1B004 DIAPHRAGM, BUNA-N 2
1B001 DIAPHRAGM, NEOPRENE 2
50-233 DIAPHRAGM, SANTOPRENE 2
6 1B114 MUFFLER 1
7 1B123 SEAL, PORT 1
8 1B124 CARRIER, VALVE 1
9 1B079 BALL, VALVE, BUNA-N 4
1B027 BALL, VALVE, NEOPRENE 4
1B053 BALL, VALVE, PTFE 4
10 50-194 CHAMBER, INNER LEFT 1
11 50-195 ROD, DIAPHRAGM 1
12 50-196 BUSHING, DIAPHRAGM SHAFT 2
13 50-197 PLATE, INNER 2
14 50-198 BUMPER 1
15 50-199 WASHER, THRUST 1
16 50-200 NUT, LOCK 2
17 50-201 MANIFOLD, AIR DISTRIBUTION 1
18 50-202 SPACER 1
19 50-203 BUSHING, SPACER 1
20 50-204 ASSEMBLY, HOSE 2
21 50-205 ADAPTER, HEX 4
22 50-206 SEAL, SHAFT 6
23 50-207 SEAL, DIAPHRAGM SHAFT 2
24 50-210 DIAPHRAGM, AIR SIDE 1
25 50-248 PLATE, SLIDE VALVE 1
26 50-251 VALVE, SLIDE 1
27 50-253 CHAMBER, OUTER - AL 2
50-052 CHAMBER, OUTER - SS 2
28 50-261 SEAL, VALVE BODY 1
29 50-279 CENTER BLOCK 1
30 50-286N MANIFOLD, SUCTION - AL PUMPS, NPT 1
50-286B MANIFOLD, SUCTION - AL PUMPS, BSP 1
50-216N MANIFOLD, SUCTION - SS PUMPS, NPT 1
50-216B MANIFOLD, SUCTION - SS PUMPS, BSP 1
31 50-287N MANIFOLD, DISCHARGE - AL PUMPS, NPT 1
50-287B MANIFOLD, DISCHARGE - AL PUMPS, BSP 1
50-217N MANIFOLD, DISCHARGE - SS PUMPS, NPT 1
50-217B MANIFOLD, DISCHARGE - SS PUMPS, BSP 1
32 50-291 CHAMBER, INNER RH 1
33 50-292 SEAT, CHECK VALVE - AL PUMPS 4
50-091 SEAT, CHECK VALVE - SS PUMPS 4
34 50-341 CAP, END 2
35 50-345 BODY, VALVE - NPT 1
50-342 BODY, VALVE - BSPT 1
Composite Repair Parts List
ATEX Compliant
LEGEND:
= Items contained in 476.395.000 Air End Kits
= Items contained in 476.393.XXX and 476.394.XXX Wet End Kits
Note: Kits contain components specic to the material codes.
Item Part Number Description Qty
36 A041 CAPSCREW, SOCKET HD,
M8 X 30 - AL PUMPS 16
A006S CAPSCREW, SOCKET HD, M8X40
SS PUMPS 16
37 A063 CAPSCREW, SOCKET HD,
M10 X 40 - AL PUMPS 28
A063S CAPSCREW, SOCKET HD,
M10 X 40 - SS PUMPS 36
38 A496 CAPSCREW, SOCKET HD,
M10 X 100-SS PUMPS 8
39 AP5045 FITTING, GREASE 1
40 B027 NUT, FLANGED, M10 - AL - PUMPS 36
B027S NUT, FLANGED, M10 - SS - PUMPS 36
41 C013 WASHER, FLAT, M8 - AL PUMPS 16
C013S WASHER, FLAT, M8 - SS PUMPS 20
42 C165 WASHER, LOCK, M8 - AL PUMPS 4
C165S WASHER, LOCK, M8 - SS PUMPS 4
43 D028 CAPSCREW, SOCKET HD,
M8 X 25 - AL PUMPS 28
D028S CAPSCREW, SOCKET HD,
M8 X 25 - SS PUMPS 28
44 D391 CAPSCREW, SOCKET HD,
M5 X 14 -AL - PUMPS 4
D391S CAPSCREW, SOCKET HD,
M5 X 14 - SS - PUMPS 4
45 G057 O-RING 2
46 G112 O-RING 4
47 G130 O-RING 2
48 G167 O-RING 4
49 G270 O-RING 2
50 G029 O-RING, SEAT, BUNA - AL PUMPS 4
G149 O-RING, SEAT, NEOPRENE - AL PUMPS 4
G031 O-RING, SEAT, EPDM - AL PUMPS 4
G111 O-RING, SEAT, PTFE - AL PUMPS 4
G420 O-RING, SEAT, BUNA - SS PUMPS 4
G426 O-RING, SEAT, NEOPRENE - SS PUMPS 4
G418 O-RING, SEAT, EPDM - SS PUMPS 4
G416 O-RING, SEAT, PTFE - SS PUMPS 4
51 SA10042 PLATE, OUTER DIAPHRAGM
ASSY - AL PUMPS 2
SA10044 PLATE, OUTER DIAPHRAGM
ASSY - SS PUMPS 2
52* SA10528 STRAP, GROUND 1
53 50-074 BRACKET, FOOT - SS PUMPS 2
54 G457 O-RING, SEAT, BUNA - SS PUMPS 4
G458 O-RING, SEAT, NEOPRENE - SS PUMPS 4
G459 O-RING, SEAT, EPDM - SS PUMPS 4
G461 O-RING, SEAT, PTFE - SS PUMPS 4
55 D172S CAPSCREW, SOCKET HD
M8 X 20 - SS PUMPS 4
56 B003S NUT, FLANGED, M8 - SS PUMPS 16
* not included - can be purchased separately
3: EXP VIEW

hp20mdl1sm-rev0621
16 • Model HP20 High Pressure sa ndp ipe rpu mp.c om
HG-CF-1087 Rev. J – 03.03.14 PAGE 13
15 29
27
11
TECHNICAL NOTES :-
Removal of Diaphragm Shaft :- After first removing manifolds and air-hoses, remove both outer covers (27), followed by frontplates (51), diaphragms (5), bac kplates (2)
and bumpstops. Remove air-chamber assy, by removing nuts & bolts This allows access to locknuts (16) to remove air
diaphragm, backplates & thrust washer (29), (27) & (15). Diaphragm Shaft can now be removed. Assembly is reverse of removal, applying a
small amount of Loctite grade 242 to locknuts prior to refitting air-chamber assy.
16
1
2
5
51
27
4: AIR END

hp20mdl1sm-rev0621
Model HP20 High Pressure • 17
sa ndp ipe rpu mp.c om
HG-CF-1194-A - 12.02.10 Page 8
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.
IMPORTANT!
SERVICE
The following sections give a general
overview on how to service all
models of BLAGDON Diaphragm
Pumps. For details on individual part
numbers, quantities, materials, etc.,
please consult the parts list supplied
with the pump.
NOTE : Before commencing
any service or maintenance work
on the pump, ensure that the air
supply has been disconnected or
isolated.
AIR VALVE SYSTEMS
PNEUMATIC TYPE Remove the 4
screws securing the valve block to
the valve chest, together with any
associated gaskets or seals.
Remove slide valve plate & slide
valve from the valve block assembly.
Clean all parts thoroughly and
inspect for excessive wear, replacing
where necessary.
The slide valve and valve plate
contact faces should be flat and free
from scratches. A light polishing on a
flat surface with a fine abrasive paper
will remove most scratches.
If excessive wear is suspected in the
valve block bore or valve carrier,
remove the valve block plugs and
withdraw the valve carrier. Check
valve block plug o-rings for wear or
attack & replace where required.
Clean the valve carrier & valve block
bore with white spirits to remove any
oil films.
NOTE : The nominal
diametrical clearance between the
valve carrier and the valve block
block bore should be 0.05 -
0.09mm. A clearance in excess of
this will cause the valve system to
run erratically.
Apply a light grease to the valve
block plug O-rings when re-
assembling into the valve block bore.
Any damage to the O-ring may cause
the valve system to malfunction.
Re-assemble the valve block
assembly & re-torque in accordance
to the settings shown in the parts list.
In the event of a complete air-side
overhaul, the pump should be dis-
assembled down to the centre
section assembly as described later
in the “Wet-Side Overhaul” section.
With the valve block assembly
dismantled, remove the inner covers
where appropriate.
A careful note of the position of all
related seals and gaskets should be
made to facilitate re-assembly.
Remove diaphragm shaft bushes,
where appropriate, and check all
seals and „O‟ rings for wear or
damage. If worn, replace
immediately.
NOTE:- The integrity of the
diaphragm shaft seals is essential
for the correct functioning of all
pneumatically actuated valve
systems.
Check the diaphragm shaft for
excessive wear as this will result in
premature seal failure. Replace as
required. Lubricate all components
and re-assemble as detailed above,
in reverse order. Ensure the correct
position of all components detailed in
all sectional assembly drawings.
WET-SIDE OVERHAUL
REPLACING BALL VALVES
Remove discharge manifold from
pump assembly together with
associated valve balls, seats and „O‟
rings.
NOTE :-The orientation of the
valve seat relative to the valve ball
should be noted as incorrect
positioning may result in a
performance loss.
Turn pump through 180oand remove
the suction manifold. Clean and
inspect the components. Check for
any wear or damage and replace as
required.
NOTE :-Ball or valve seat wear
may result in loss of performance
and suction lift.
Re-assemble the valve balls/seats
and ensure manifolds are adequately
torqued to the settings shown in the
parts list.
REPLACING DIAPHRAGMS
Remove both suction and discharge
manifolds as detailed in the previous
section, removing all ball valves,
seats and „O‟ rings.
Loosen and remove both outer
covers from the pump assembly.
The orientation of the covers should
be noted so as to facilitate re-
assembly.
Holding one of the frontplates in a
vice, („soft jaws‟ should be fitted), or
with an adjustable spanner, loosen
and remove the frontplate from the
opposite end. Remove the
diaphragm, backplate and bumpstop
from diaphragm shaft.
Carefully withdraw the diaphragm
shaft from the centre section and
hold the free end in a vice, holding
between the flats machined on the
end. Loosen and remove the
frontplate and remove the diaphragm
together with backplate and
bumpstop (where fitted).
NOTE :-Care should be taken with
all plastic, coated and hygienic
pumps, so that the surface of the
frontplate is not damaged.
Thoroughly clean all parts and check
for wear, damage, swelling, cracking,
delamination and chemical attack.
Replace components where required.
NOTE :-Rubber diaphragms
should be replaced if they are
worn to such an extent that the
fabric re-enforcing is evident on
the surface of the diaphragm.
For pumps fitted with PTFE
diaphragms, a light coating of grease
should be applied to the back-up
diaphragm prior to re-assembly.
Before re-assembly, it is advisable to
check the condition of the diaphragm
shaft seal/‟O‟ rings for wear or attack.
If either is evident, it is recommended
that they be replaced.
Assemble the diaphragms onto the
shaft in a reverse sequence to their
removal. Care should be taken as to
the orientation of the diaphragm
relative to the front and back plates.
All diaphragms have “AIR SIDE”
molded onto one side. The backplate
must be fitted adjacent to the AIR
SIDE of the diaphragm.
4: AIR 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. ~
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