SANDPIPER DMF2S User Manual
II 2GD T5
SERVICE & OPERATING MANUAL
Original Instructions
A WARREN RUPP PUMP BRAND
DRILLER’S MUD SERIES
See pages 20 & 21
for ATEX ratings
Model DMF2R & DMF2S
2" Flap Valve Pump
Table of Contents
Engineering Data and Performance Curve............................................................ 1
Temperature Limitations and Explanation of Pump Nomenclature ....................... 2
Dimensions DMF2R .............................................................................................. 3
Dimensions DMF2S............................................................................................... 4
Principle of Operation ............................................................................................ 5
Installation and Start-Up ........................................................................................ 5
Air Supply .............................................................................................................. 5
Air Inlet & Priming .................................................................................................. 6
ESADS+Plus®:
Air Exhaust ............................................................................................................ 7
Between Uses ....................................................................................................... 7
Flap Valve Servicing .............................................................................................. 7
Diaphragm Servicing ............................................................................................. 8
Reassembly ........................................................................................................... 8
Pilot Valve .............................................................................................................. 9
Pilot Valve Actuator ................................................................................................ 9
Service Instructions: Troubleshooting ................................................................... 9
Warranty .............................................................................................................. 10
Grounding The Pump .......................................................................................... 10
Important Safety Information ............................................................................... 11
Recycling ............................................................................................................. 11
Material Codes .................................................................................................... 12
Composite Repair Parts List DMF2S..............................................................13-14
Composite Repair Drawing DMF2S .................................................................... 15
Composite Repair Parts List DMF2R .............................................................16-17
Composite Repair Drawing DMF2R .................................................................... 18
CE Declaration of Conformity - Machinery .......................................................... 19
CE Declaration fo Conformity - ATEX .................................................................. 20
Explanation of ATEX Certication ........................................................................ 21
Externally Serviceable Air Distribution System ................................6
Type 5
dmf2dl5sm-rev0614
Warren Rupp, Inc. • A Unit of IDEX Corporation • 800 N. Main St., Manseld, Ohio 44902 USA
Telephone (419) 524-8388 • Fax (419) 522-7867 • warrenrupp.com
©Copyright 2014 Warren Rupp, Inc. All rights reserved.
DRILLER’S MUD SERIES
A WARREN RUPP PUMP BRAND
II 2GD T5
Quality System
ISO 9001 Certied
Environmental
Management System
ISO 14001 Certied
INTAKE/DISCHARGE PIPE SIZE
2" (50mm) NPT (F)
PSI
BAR
7
100
90
6
80
5
70
60
4
50
HEAD
3
40
30
2
20
1
10
CAPACITY
0 to 140 gallons per minute
(0 to 530 liters per minute)
AIR CONSUMPTION
SCFM (M
10(17)
20(34)
100 PSI
80 PSI
60 PSI
40 PSI
20 PSI Air Inlet Pressure
30(51)
40(68)
3
/hr)
50(85)
60(101.9)
2" Flap Valve
DMF2R &
DMF2S
Air-Operated
See pages 20 & 21
for ATEX ratings
AIR VALVE
No-lube, no-stall
design
MODEL DMF2 Performance Curve
Performance based on the following: elastomer fitted pump, flooded suction,
water at ambient conditions. The use of other materials and varying hydraulic
70(118.9)
80(135.9)
90(152.9)
100(169.9)
Double Diaphragm Pump
ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA
SOLIDS-HANDLING
Up to 2" (50mm)
conditions may result in deviations in excess of 5%.
125(212.4)
Type 5
HEADS UP TO
125 psi or 289 ft. of water
(8.8 Kg/cm2 or 88 meters)
150(254.9)
dmf2dl5sm-rev0614 Model DMF2 Page 1
0
0
200 40
60
80
100
120 140
160
U.S. Gallons per minute
0 200 300 400 500 600
100
Liters per minute
CAPACITY
SANDPIPER® PUMPS ARE DESIGNED TO BE POWERED ONLY BY COMPRESSED AIR.
Explanation of Pump Nomenclature: DMF2R & DMF2S
II 2GD T5
MATERIALS OF CONSTRUCTION
To order a pump or replacement parts, rst enter the Model Number DMF2R, or DMF2S, followed by the Type Designation listed below in the far left column.
DMF2
Type 5
DB-5-A AL380DC AL380DC AL380DC PS PS 356-T6AL 435SS 316SS PS B B N/A B 86
Manifold
Elbow
Outer
Chamber
Inner
Chamber
Outer
Diaphragm
plates
Inner
Diaphragm
Plate
Intermediate
Housing
Diaphragm
Rod
Valve
Hardware Diaphragm Flap
Seat
Valve
Material
Seat
Gasket
Sealing
Rings
Shippping
Wt. (lbs)
Meanings of
Abbreviations:
AL = Aluminum DC = Die Cast SS = Stainless Steel
B = Nitrile PS = Plated Steel
Materials
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.
For specic applications, always consult “Chemical Resistance Chart" Technical Bulletin
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.
Operating Temperatures
Maximum Minimum
190°F -10°F
88°C -23°C
II 2 G c T5
II 3/2 G c T5
II 2 D c T100oC
All models, including pumps equipped with Aluminum wetted and midsection parts.
See page 21 for ATEX Explanation of Type Examination Certicate.
dmf2dl5sm-rev0614 Model DMF2 Page 2
Dimensions:
3/4" NPT AIR EXHAUST
Dimensions are ± 1/8"
Figures in parenthesis = millimeters
11.93
303
DMF2R
2" CAM AND GROOVE
24.50
622
SUCTION PORT
19.80
503
5.58
142
DISCHARGE PORT
2" CAM AND GROOVE
13.00
330
26.00
660
3/4" NPT AIR INLET
13.50
343
3/4" NPT AIR EXHAUST
27.00
686
5.58
142
4.69
119
dmf2dl5sm-rev0614 Model DMF2 Page 3
Dimensions:
15.98
406
26.04
661
32.00
813
23.85
606
8.73
222
5.58
142
18.50
470
5.58
142
3/4" NPT AIR INLET
SUCTION PORT
2" CAM AND GROOVE
DISCHARGE PORT
2" CAM AND GROOVE
3/4" NPT AIR EXHAUST
8.73
222
3/4" NPT AIR EXHAUST
Dimensions are ± 1/8"
Figures in parenthesis = millimeters
DMF2S
dmf2dl5sm-rev0614 Model DMF2 Page 4
SERVICE AND OPERATING MANUAL
II 2GD T5
Model DMF2R
DMF2S
A WARREN RUPP PUMP BRAND
DRILLER’S MUD SERIES
See pages 20 & 21
for ATEX ratings
2" Flap Valve Pump
Type 5
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 check valve for each chamber,
maintaining ow in one direction through the pump.
Heavy Duty Flap
INSTALLATION & START-UP
Locate the pump as close to the product being pumped as possible, keeping suction 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 Warren Rupp Tranquilizer® 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 sufcient 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.
dmf2dl5sm-rev0614 Model DMF2 Page 5
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