Sandpiper HD20F User manual

s a n d p i p e r p u m p .c o m
Model HD20F
Non-Metallic Flap Valve
Design Level 1
Certied Quality
Warren Rupp, Inc.
®
A Unit of IDEX Corporation
800 N. Main St.,
Manseld, Ohio 44902 USA
Telephone [phone]
Fax [phone]
SANDPIPERPUMP.COM
Quality System
ISO 9001 Certied
Environmental Management System
ISO 14001 Certied
© Copyright 2015 Warren Rupp, Inc.®
All rights reserved
SERVICE & OPERATING MANUAL
Original Instructions
1: PUMP SPECS2: INSTALL & OP3: EXP VIEW4: AIR END5: WET END6: OPTIONAL7: WARRANTY

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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.
Model HD20F Non-Metallic
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
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
UNIVERSAL ALL AODD

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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 .......................................11
• Air Distribution Valve Assembly
• Air Valve with Stroke Indicator Assembly
• Pilot Valve Assembly
• Intermediate Assembly
SECTION 5: WET END .....................................15
• Diaphragm Drawings
• Diaphragm Servicing
SECTION 7: WARRANTY & CERTIFICATES ....17
• Warranty
• CE Declaration of Conformity - Machinery
MODEL SPECIFIC
1: PUMP SPECS2: INSTALL & OP3: EXP VIEW4: AIR END5: WET END6: OPTIONAL7: WARRANTY

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1 • Model HD20F Non-Metallic
Explanation of Pump Nomenclature
Pump Style
SStandard
Pump Options
0 IntegralMufer
1 SoundDampeningMufer
2 MeshMufer
Kit Options
00. None
P0. 10.30VDC Pulse Output Kit
P1. Intrinsically-Safe 5.30VDC,
110/120VAC 220/240 VAC
Pulse Output Kit
P2. 110/120 or 220/240VAC
Pulse Output Kit
S P. Stroke Indicator Pins
SB. Stainless Brass Main Valve
Pump Conguration
HD Heavy Duty
Pump Size
20 2"
Check Valve Type
FFlap Valve
Design Level
1Design Level
Wetted Material
PPolypropylene / Glass Filled Polypropylene
Diaphragm/Check Valve Materials
BBuna-N / Buna-N
EEPDM / EPDM
HHytrel / Hytrel
JSantoprene / EPDM
NNeoprene / Neoprene
PNeoprene / Urethane
VFKM / FKM
Check Valve Seat
SStainless
Non-Wetted Material Options
PGlass Filled Polypropylene
Porting Options
NNPT Female
BBSPT Female
Your Serial #: (ll in from pump nameplate) _____________________________________
Pump Pump Check Design Wetted Diaphragm/ Check Valve Non-Wetted Porting Pump Pump Kit
Cong. Size Valve Level Material Check Valve Seat Material Options Style Options Options
HD XX X X X X X X X X X XX
Model #:
HD
__ ____ __ __ __ __ __ __ __ __ __ ____
(ll in from pump
nameplate)
Your Model #:
MODEL SPECIFIC
1: PUMP SPECS

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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.
Metals:
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:
Performance
HD20F NON-METALLIC FLAP VALVE
SUCTION/DISCHARGE PORT SIZE
• 2" NPT (F)
• 2" BSPT (F)
CAPACITY
• 0 to 150 gallons per minute
(0 to 567 liters per minute)
AIR DISTRIBUTION VALVE
• No-lube, no-stall design
SOLIDS-HANDLING
• Up to 1.8 in. (45.7mm)
HEADS UP TO
• 100 psi or 231 ft. of water
(7 bar or 70 meters)
MAXIMUM OPERATING PRESSURE
• 100 psi (7 bar)
DISPLACEMENT/STROKE
• .50 Gallon / 1.9 liter
WEIGHTS
• Pump: 53 lbs. (24kg)
• Shipping: 70 lbs. (31.7kg)
0 20 40 60 80 100 120 140
100 200 300 400 500 6000
100
80
60
40
20
0
0
1
2
3
4
5
6
7
30
20
25
10
15
5
9.1
6
7.6
3
4.5
1.5
160
CAPACITY
Liters per minute
HEAD
U.S. Gallons per minute
BAR
PSI
NPSHR
METERS FEET
MODEL HD20F 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%.
10 (17) 20 (34)
40 (68)
50 (85)
60 (102)
30 (51)
100 PSI (6.8 Bar)
60 PSI (4.08 Bar)
20 PSI (1.36 Bar) Air Inlet Pressure
40 PSI (2.72 Bar)
80 PSI (5.44 Bar)
MODEL SPECIFIC UNIVERSAL ALL AODD
1: PUMP SPECS

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3 • Model HD20F Non-Metallic
HD20F Non-Metallic
Dimensions in Inches [ ] in Millimeters. Dimensional tolerance: +/- 1/8" [ ] +/- 3mm
Dimensional Drawings
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
IMPORTANT
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. In the event of a
diaphragm failure a complete rebuild of the
center section is recommended.
29.70
754
20.89
531
2X .13
3
2.00
51
9.78
248
17.56
446
3.00
76
3.00
76
SUCTION
PORT
2" NPT
2" BSPT
DISCHARGE PORT
2" FNPT
2" BSPT
12.02
305
4X
.41
10
9.00
229
AIR INLET
3/4 NPT
STANDARD ENCAPSULATED
MUFFLER 1" NPT EXHAUST PORT FOR
OPTIONAL MUFFLER STYLES OR PIPING
EXAUST AIR IN SUBMERGED APPLICATIONS
DIMENSIONAL TOLERANCE .13 [3]
MUFFLER OPTION DIM "A" DIM "B"
INTEGRAL MUFFLER 6.88 [175] 12.65 [321]
MESH MUFFLER
9.38 [238] 15.15 [385]
SOUND DAMPENING MUFFLER
Dim A
Dim B
MODEL SPECIFIC
1: PUMP SPECS

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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
UNIVERSAL ALL AODD
2: INSTALL & OP

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5 • Model HD20F Non-Metallic
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.
Recommended Installation Guide
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.
Unregulated Air
Supply to Surge
Suppressor
Air Inlet
Check Valve
Shut O Valve
Suction
Shut O Valve
Drain
Valve
Vacuum Gauge
Flexible Connector
Pipe Connection
Style Optional
Surge Suppressor
Pressure Gauge
Shut O Valve
.
Discharge
Flexible
Connector
Flexible
Connector
Drain
Valve
Air Dryer
Filter Regulator
NOTE: Surge Suppressor and
Piping must be Supported After
the Flexible Connection
Pipe Connection
Style Optional
UNIVERSAL ALL AODD, EXCEPT FLAP
2: INSTALL & OP

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Recommended Installation Guide Troubleshooting Guide
For additional troubleshooting tips contact After Sales Support at [email protected] or 419-524-8388
Symptom: Potential Cause(s): Recommendation(s):
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 element, 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. Check Valve 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 and valve seat area. Replace valve seat if damaged.
Valve(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: INSTALL & OP

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7 • Model HD20F Non-Metallic
Composite Repair Parts Drawing
19
35
5
18
25
50
13
50 10
43
16
47
44
31
34
6
26 39
11
48
23
2
12
4
13
50
21
1
49
15
24
42
9
40
14
50 28
50
28
17
39 41 27
8
22
OPTIONAL 90
ROTATION
25
33
36
3
30 738
45 46 20
32 37 29
Torque:
120 in-lbs.
Torque:
120 in-lbs.
Torque:
150 in-lbs. Torque:
480 in-lbs.
Torque:
150 in-lbs.
Torque:
220 in-lbs.
Torque:
220 in-lbs.
Item #14: use 242 Loctite or equivalent anaerobic adhesive during installation
Item #16: use 242 Loctite or equivalent anaerobic adhesive during installation
Item #46: if studs are replaced use 277 Loctite or equivalent anaerobic adhesive during installation
MODEL SPECIFIC
3: EXP VIEW

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Parts underlined are only available for sale in kits
Item Part Number Description Qty
1**031-140-000 AirValveAssembly(IntegralMufer) 1
 031-141-000 AirValveAssembly(NoMufer) 1
2 095-110-558 Pilot Valve Assembly 1
3 114-024-551 Intermediate Assembly 1
4 115-174-115 Bracket, Foot 2
5 115-177-115 Bracket, Hanging 2
6 132-035-360 Bumper 2
7 135-034-506 Bushing, Plunger 2
8 165-118-551 Cap, Air Inlet 1
9 165-148-551 Cap, Clean Out 2
10 170-018-115 Capscrew,Hex-Hd,3/8-16x11/4 4
11 170-069-115 Capscrew,Hex-Hd,5/16-18x13/4 4
12 170-129-115 Capscew,Hex-Hd,3/8-16x23/4 8
13 170-130-115 Capscrew,Hex-Hd,3/8-16x3 24
14 171-015-115 Capscrew,Flat-Hd,3/8-16x7/8 8
15 171-053-115 Capscrew,Socket-Hd,3/8-16x21/2 4
16 171.102.110B CAPSCREW,SocketHd,3/8-16x.63 16
17 196-217-551 Chamber, Inner 2
18 196-218-552 Chamber, Outer 2
19 286-007-360 Diaphragm, Buna-N 2
286-007-363 Diaphragm, Fluorocarbon FKM 2
286-007-364 Diaphragm, EPDM 2
286-007-365 Diaphragm, Neoprene 2
286-007-354 Diaphragm, Santoprene 2
286-007-356 Diaphragm, Hytrel 2
20 338-005-360 Flap Valve, Buna-N 4
338-005-363 Flap Valve, Fluorocarbon FKM 4
338-005-364 Flap Valve, EPDM 4
338-005-365 Flap Valve, Neoprene 4
338-010-356 Flap Valve, Hytrel 4
338-010-357 Flap Valve, Urethane 4
21 360-093-360 Gasket, Main Air Valve 1
22 360-103-360 Gasket, Pilot Valve 1
23 360-104-360 Gasket, Air Inlet Cap 1
24 360-105-360 Gasket, Inner Chamber 2
25 405-013-551 Handle 2
26 518-222-552 Manifold 2
27 535-098-000 Plate, Name 2
28 545-005-115 Nut,Hex 24
29 547-002-110 Nut, Stop 8
30 560-001-360 O-ring 2
31 560-213-360 O-ring, Buna-N 2
560-213-363 O-ring, Fluorocarbon FKM 2
560-213-364 O-ring, EPDM 2
560-213-365 O-ring, Neoprene 2
32 570-001-360 Hinge Pad, Buna-N 4
570-001-363 Hinge Pad, Fluorocarbon FKM 4
570-001-364 Hinge Pad, EPDM 4
570-001-365 Hinge Pad, Neoprene 4
33 570-009-360 Pad,Wear,Buna-N 2
 570-009-363 Pad,Wear,FluorocarbonFKM 2
 570-009-364 Pad,Wear,EPDM 2
 570-009-365 Pad,Wear,Neoprene 2
34 612-195-157 Plate, Inner Diaphragm 2
35 612-225-552 Plate,OuterDiaphragm(withstud) 2
36 620-007-114 Pin, Plunger 2
37 670-005-110 Retainer,FlapValve 4
38 675-042-115 Ring,Retaining 2
39 675-073-360 RingSealing,Buna-N 4
 675-073-363 RingSealing,FluorocarbonFKM 4
 675-073-364 RingSealing,EPDM 4
 675-073-365 RingSealing,Neoprene 4
Item Part Number Description Qty
Composite Repair Parts List
LEGEND:
= Items contained within Air End Kits
= Items contianed within Wet End Kits
Note: Kits contain components specic to the material codes.
**Air End Kit does not include entire air valves assembly. It includes
replacement sleeve and spool set, plus o-rings.
40 685-059-120 Rod,Diaphragm 1
41 710-021-115 Screw,PanHead 4
42 720-004-360 Seal, U-cup 2
43 720-076-360 Seal, Clean Out Cap, Buna-N 2
720-076-363
Seal, Clean Out Cap, Fluorocarbon FKM 2
720-076-364 Seal, Clean Out Cap, EPDM 2
720-076-365 Seal, Clean Out Cap, Neoprene 2
44 720-077-360 Seal, Seat, Buna-N 2
720-077-363 Seal, Seat, Fluorocarbon FKM 2
720-077-364 Seal, Seat, EPDM 2
720-077-365 Seal, Seat, Neoprene 2
45 722-129-110 Seat,CheckValve(includesstuds) 4
46 807-018-110 Stud 8
47 900-004-110 Washer,Lock5/16 16
48 901-038-115 Washer,Flat5/16 4
49 901-048-115 Washer,Flat3/8 4
50 901-052-115 Washer,Flat3/8 48
MODEL SPECIFIC
3: EXP VIEW

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om
9 • Model HD20F Non-Metallic
476.353.000 Air End Kit
Seals, O-rings, Gaskets, Retainer Rings, Aluminum Sleeve and spool set, pilot valve assembly
476.353.162 Air End Kit
Seals, O-rings, Gaskets, Retainer Rings, Brass/Stainless Sleeve and spool set, pilot valve assembly
476.354.360 Wetted End Kit
For Model HD20F1PBSPNS000/HD20F1PBSPBS000
Buna-N Diaphragms, Flap Valves, Hinge Pads, Seals, Wear Pads and Sealing Rings
476.354.363 Wetted End Kit
For Model HD20F1PVSPNS000/HD20F1PVSPBS000
FKM (Viton) Diaphragms, Flap Valves, Hinge Pads, Seals, Wear Pads and Sealing Rings
476.354.364 Wetted End Kit
For Model HD20F1PESPNS000/HD20F1PESPBS000
EPDM Diaphragms, Flap Valves, Hinge Pads, Seals, Wear Pads and Sealing Rings
476.354.365 Wetted End Kit
For Model HD20F1PNSPNS000/ HD20F1PNSPBS000
Neoprene Diaphragms, Flap Valves, Hinge Pads, Seals, Wear Pads and Sealing Rings
476.354.356 Wetted End Kit
For Model HD20F1PHSPNS000/HD20FHP1SPBS000
Hytrel Diaphragms, Flap Valves, Neoprene Hinge Pads, Seals, Wear Pads and Sealing Rings
476.354.632 Wetted End Kit
For Model HD20F1PPSPNS000/HD20F1PPSPBS000
Neoprene Diaphragms, Urethane Flap Valves, Neoprene Hinge Pads, Seals, Wear Pads and Sealing Rings
476.354.677 Wetted End Kit
For Model HD20FPJSPNS000/HD20FPJSPBS000
Santoprene Diaphragms, EPDM Flap Valves, Hinge Pads, Seals,Wear Pads and Seals
476.355.360 Check Valve Module Kit
For Model HD20F1PBSPNS000/HD20F1PBSPBS000
Seat, Buna-N Flap, Hinge Pad, Retainer (assembled)
476.355.363 Check Valve Module Kit
For Model HD20F1PVSPNS000/HD20F1PVSPBS000
Seat, FKM (Viton) Flap, Hinge Pad, Retainer (assembled)
476.355.364 Check Valve Module Kit
For Model HD20F1PESPNS000/HD20F1PESPBS000 & HD20F1PJSPNS000/HD20FJSPBS000
Seat, EPDM Flap, Hinge Pad, Retainer (assembled)
476.355.365 Check Valve Module Kit
For Model HD20F1PNSPNS000/ HD20F1PNSPBS000
Seat, Neoprene Flap, Hinge Pad, Retainer (assembled)
476.355.356 Check Valve Module Kit
For Model HD20F1PHSPNS000/HD20FHP1SPBS000
Seat, Hytrel Flap, Neoprene Hinge Pad, Retainer (assembled )
476.355.632 Check Valve Module Kit
For Model HD20F1PPSPNS000/HD20F1PPSPBS000
Seat, Urethane Flap, Neoprene Hinge Pad, Retainer (assembled)
476.356.360 Check Valve Seal Kit
For Model HD20F1PBSPNS000/HD20F1PBSPBS000
Buna-N Seat seals and Cap Seals
476.356.363 Check Valve Seal Kit
For Model HD20F1PVSPNS000/HD20F1PVSPBS000
FKM (Viton) Seat seals and Cap Seals
476.356.364* Check Valve Seal Kit
For Model HD20F1PESPNS000/HD20F1PESPBS000 & HD20F1PJSPNS000/HD20FJSPBS000
EPDM Seat seals and Cap Seals
476.356.365** Check Valve Seal Kit
For Model HD20F1PNSPNS000/ HD20F1PNSPBS000, HD20F1PHSPNS000/HD20FHP1SPBS000 & HD20F1PPSPNS000/HD20F1PPSPBS000
Neoprene Seat seals and Cap Seals
* Pumps tted with Santoprene diaphragms use EPDM seal kit, ** Pumps tted with Hytrel or Urethane ap valves use Neoprene seal kit
Service & Repair Kits
3: EXP VIEW

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om Model HD20F Non-Metallic • 10
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
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
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
677.....Santoprene, EPDM
• 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
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.
UNIVERSAL ALL SP
3: EXP VIEW

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om
11 • Model HD20F Non-Metallic
Air Distribution Valve Assembly
1-C
1-D
1-A
1-B
1-D
1-C
1-H
1-F
1-G
1-D
1-E
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.
Air Valve Assembly Parts List
Item Part Number Description Qty
1 031-140-100 Air Valve Assembly 1
1-A 031-139-100 Sleeve and Spool Set 1
1-B 095-119-551 Body, Air Valve 1
1-C 165-140-552 End Cap 2
1-D 560-020-360 O-Ring 10
1-E 675-068-115 Retainer 2
1-F 165-096-551 Cap, Mufer 1
1-G 530-028-550 Mufer 1
1-H 710-015-115 Screws, Self tapping 4
For pumps with alternate mesh, sound dampening mufers or piped
exhaust:
1 031-141-000 Air Valve Assembly 1
(Includes all items used on 031-140-100 minus items
1-F,1-G & 1-H)
Air Valve Assembly Parts List
Brass / Stainless
Item Part Number Description Qty
1 031-140-162 Air Valve Assembly 1
1-A 031-139-162 Sleeve and Spool Set 1
1-B 095-119-551 Body, Air Valve 1
1-C 165-140-552 End Cap 2
1-D 560-020-360 O-Ring 10
1-E 675-068-115 Retainer 2
1-F 165-096-551 Cap, Mufer 1
1-G 530-028-550 Mufer 1
1-H 710-015-115 Screws, Self tapping 4
For pumps with alternate mesh, sound dampening mufers or piped
exhaust:
1 031-141-162 Air Valve Assembly 1
(Includes all items used on 031-140-162 minus items
1-F,1-G & 1-H)
Air Distribution Valve Servicing
See repair parts drawing, remove screws.
Step 1: Remove air valve from pump (1).
Step 2: Remove retainer (1-E).
Step 3: Remove end caps (1-C).
Step 4: Remove spool part of (1-A) Inspect for wear or damage.
Step 5: Press sleeve part of (1-A) from body (1-B) Inspect for
wear or damage.
Step 6: Inspect o-rings (1-D) and replace as needed.
Step 7: Lubricate o-rings (1-D) and press sleeve (1-A) in body (1-B).
Step 8: Press sleeve part of (1-A) into body (1-B).
Step 9: Reassemble in reverse order.
Note: Sleeve and spool (1-A) set is match ground to a specied
clearance. Individual sleeves and spools (1-A) cannot
be interchanged.
MODEL SPECIFIC
4: AIR END

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om Model HD20F Non-Metallic • 12
Air Valve with Stroke Indicator Assembly
1-C
1-A
1-B
1-C
1-L
1-J
1-K
1-D
1-E
1-D
1-G
1-F
1-D
1-G
1-F
1-H
Note: Stroke Indicator is standard on Spill Containment models
Air Valve Assembly Parts List
Item Part Number Description Qty
1 031-146-000 Air Valve Assembly 1
1-A 031-143-000 Sleeve and Spool Set w/Pins 1
1-B 095-119-551 Body, Air Valve 1
1-C 165-156-147 Cap, End 2
1-D 560-020-360 O-Ring 8
1-E 675-068-115 Retainer 2
1-F 132-039-552 Bumper 2
1-G 560-029-360 O-Ring 2
1-H 210-008-330 Clip, Safety 2
1-J 165-096-551 Cap, Mufer 1
1-K 530-028-550 Mufer 1
1-L 710-015-115 Screws, Self tapping 4
For pumps with alternate mesh, sound dampening mufers or piped exhaust:
1 031-147-000 Air Valve Assembly 1
(includes all items on 031-146-000 minus 1-J, 1-K, & 1-L)
Air Distribution Valve Servicing
See repair parts drawing, remove screws.
Step 1: air valve from pump (1).
Step 2: Remove retainer (1-E).
Step 3: end caps (1-C) & bumpers (1-E) inspect o-rings 1-G.
Step 4: Remove spool part of (1-A) Inspect for wear or damage.
Step 5: Press sleeve part of (1-A) from body (1-B) Inspect for wear
or damage.
Step 6: Inspect o-rings (1-D) and replace as needed.
Step 7: Lubricate o-rings (1-D) and press sleeve (1-A) in body (1-B).
Step 8: Press sleeve part of (1-A) into body (1-B).
Step 9: Reassemble in reverse order
Note: Sleeve and spool (1-A) set is match ground to a specied
clearance. Individual sleeves and spools (1-A) cannot be interchanged.
MODEL SPECIFIC
4: AIR END

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om
13 • Model HD20F Non-Metallic
Pilot Valve Assembly
Pilot Valve Servicing
With Pilot Valve removed from pump.
Step 1: Remove snap ring (2-F).
Step 2: Remove sleeve (2-B), inspect O-Rings (2-C),
replace if required.
Step 3: Remove spool (2-D) from sleeve (2-B),
inspect O-Rings (2E), replace if required.
Step 4: Lightly lubricate O-Rings (2-C) and (2-E).
Reassemble in reverse order.
Pilot Valve Assembly Parts List
Item Part Number Description Qty
2 095-110-558 Pilot Valve Assembly 1
2-A 095-095-558 Valve Body 1
2-B 755-052-000 Sleeve (With O-Rings) 1
2-C 560-033-360 O-Ring (Sleeve) 6
2-D 775-055-000 Spool (With O-Rings) 1
2-E 560-023-360 O-Ring (Spool) 3
2-F 675-037-080 Retaining Ring 1
2-A
2-B
2-C
2-F
2-E
2-D
MODEL SPECIFIC
4: AIR END

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om Model HD20F Non-Metallic • 14
Pilot Valve Assembly Intermediate Assembly
Intermediate Assembly Drawing
Step 1: Remove plunger, actuator (36) from center of
intermediate pilot valve cavity.
Step 2: Remove ring, retaining (38), discard.
Step 3: Remove bushing, plunger (7), inspect for wear
and replace if necessary with genuine parts.
Step 4: Remove O-ring (30), inspect for wear and
replace if necessary with genuine parts.
Step 5: Lightly lubricate O-ring (30) and insert into
intermediate.
Step 6: Reassemble in reverse order.
Step 7: Remove seal, diaphragm rod (42).
Step 8: Clean seal area, lightly lubricate and install new seal,
diaphragm rod (40, not shown).
36
30 7
42
38
3
MODEL SPECIFIC
4: AIR END

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om
15 • Model HD20F Non-Metallic
Torque:
480 in-lbs.
13
Diaphragm Service Drawing, Non-Overlay
MODEL SPECIFIC
5: WET END

hd20fnmdl1sm-rev1215
sa ndp ipe rpu mp.c om Model HD20F Non-Metallic • 16
Step 1: 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 seals. Soft jaws in a vise are
recommended to prevent diaphragm rod damage.
Step 1.A: 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.
Step 2: 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.
Step 3: 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.
Step 4: 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.
Step 5: 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.
Step 6: Thread one assembly onto the diaphragm
rod with sealing washer (when used) and bumper.
Step 7: Install diaphragm rod assembly
into pump and secure by installing the outer
chamber in place and tightening the capscrews.
Step 8: 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.
Step 9: Complete assembly of entire unit.
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
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.
Written Warranty
5 - YEAR Limited Product Warranty
Quality System ISO 9001 Certied • Environmental Management Systems ISO 14001 Certied
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 ve years from the date of shipment from Warren Rupp’s factory. Warren Rupp brands
include SANDPIPER®, MARATHON®, PortaPump®, SludgeMaster™ and Tranquilizer®.
~ See complete warranty at www.sandpiperpump.com/content/warranty-certications ~
UNIVERSAL ALL SP
7: WARRANTY