U.S. Patent #
5,851,109; 5,996,627;
400,210 & 6,241,487
Other U.S. Patents
Applied for
M10 Non-Metallic
Design Level 1
Ball Valve
Air-Operated
Double Diaphragm Pump
ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA
INTAKE/DISCHARGE PIPE SIZE
1" ANSI Flange
CAPACITY
0 to 23 US gallons per minute
(0 to 87 liters per minute)
AIR VALVE
No-lube, no-stall
design
SOLIDS-HANDLING
Up to .15 in. (4mm)
HEADS UP TO
100 psi or 231 ft. of water
(7 bar or 70 meters)
DISPLACEMENT/STROKE
.026 US gallon / .098 liter
CAUTION! Operating temperature limitations are as follows:
Operating Temperatures
Materials Maximum* Minimum* Optimum**
Santoprene
life. Excellent abrasion resistance. 135°C -40°C 10°C to 100°C
PTFE Chemically inert, virtually impervious. Very few chemicals are known to react chemically with
Teon: molten alkali metals, turbulent liquid or gaseous uorine and a few uoro-chemicals such as 220°F -35°F 50°F to 212°F
chlorine triuoride or oxygen diuoride which readily liberate free uorine at elevated temperatures. 104°C -37°C 10°C to 100°C
PVDF 250°F 0°F121°C -18°C
Polypropylene 180°F 32°F 82°C 0°C
Polyurethane
Nylon
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) will attack FKM.
®
Injection molded thermoplastic elastomer with no fabric layer. Long mechanical ex 275°F -40°F 50° to 212°F
210°F
99°C
180°F
82°C
350°F
177°C
-40°F
-40°C
32°F
0°C
-40°F
-40°C
-40°F to 210°F
-40°C to 99°C
For specic applications, always consult “Chemical Resistance Chart” Technical Bulletin
MARATHON® pumps are designed to be powered only by compressed air.
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 1
*Denite reduction in service life.
**Minimal reduction in service life at ends of range.
Performance based on the following: elastomer fitted pump, flooded suction, water at ambient conditions.
MODEL M10 Non-Metallic Performance Curve
The use of other materials and varying hydraulic conditions may result in deviations in excess of 5%.
PSI
4 (7)
100 PSI (6.8 Bar)
90
80
80 PSI (5.44 Bar)
70
60
60 PSI (4.08 Bar)
50
40
40 PSI (2.72 Bar)
30
20
20 PSI (1.36 Bar)
10
0
02468101214161820222426
8 (13.5)
12 (20)
16 (27)
20 (34)
Air Inlet Pressure
U.S. Gallons per minute
FEET
30
25
20
15
10
5
NPSHR
METERS
9.1
7.6
6
4.5
3
1.5
1020304050607080901000
Liters per minute
CAPACITY
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 3
Dimensions: M10 Non-Metallic
ANSI STYLE
ANSI STYLE
Dimensions in Inches
Dimensional tolerance: ±1/8"
Dimension
Standard Pump
Pulse Output Kit
Mesh Mufer
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 4
A
4 1/16"
4 1/16"
5 3/4"
B
7 9/16"
9 5/16"
9 1/4"
Metric Dimensions: M10 Non-Metallic
ANSI STYLE
ANSI STYLE
Dimensions in Millimeters
Dimensional tolerance: ±3mm
Dimension
Standard Pump
Pulse Output Kit
Mesh Mufer
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 5
A
103mm
103mm
146mm
B
192mm
192mm
235mm
PRINCIPLE OF PUMP OPERATION
This ball type check valve pump
is powered by compressed air and is
a 1:1 ratio design. The inner side of
one diaphragm chamber is alternately
pressurized while simultaneously
exhausting the other inner chamber.
This causes the diaphragms, which
are connected by a common rod
secured by plates to the centers of the
diaphragms, to move in a reciprocating
action. (As one diaphragm performs the
discharge stroke the other diaphragm is
pulled to perform the suction stroke in
the opposite chamber.) Air pressure is
applied over the entire inner surface of
the diaphragm while liquid is discharged
from the opposite side of the diaphragm.
The diaphragm operates in a balanced
condition during the discharge stroke
which allows the pump to be operated
at discharge heads over 200 feet (61
meters) of water.
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 to maximize
diaphragm life.
Alternate pressurizing and
exhausting of the diaphragm chamber
is performed by an externally mounted,
pilot operated, four way spool type
air distribution valve. When the spool
shifts to one end of the valve body, inlet
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 pressure to the chambers
is reversed. The air distribution valve
spool is moved by a internal pilot valve
which alternately pressurizes one end
of the air distribution valve spool while
exhausting the other end. The pilot valve
is shifted at each end of the diaphragm
stroke when a actuator plunger is
contacted by the diaphragm plate. This
actuator plunger then pushes the end
of the pilot valve spool into position to
activate the air distribution valve.
The chambers are connected with
manifolds with a suction and discharge
check valve for each chamber,
maintaining flow in one direction
through the pump.
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.
For installations of rigid piping,
short sections of exible hose should
be installed between the pump
and the piping. The flexible hose
reduces vibration and strain to the
pumping system. A surge suppressor
is recommended to further reduce
pulsation in ow.
AIR SUPPLY
Air supply pressure cannot exceed
100 psi (7 bar). Connect the pump
air inlet to an air supply of sufcient
capacity and pressure required for
desired performance. When the air
supply line is solid piping, use a short
length of exible hose not less than
1/2" (13mm) in diameter between
the pump and the piping to reduce
strain to the piping. The weight of the
air supply line, regulators and lters
must be supported by some means
other than the air inlet cap. Failure to
provide support for the piping may result
in damage to the pump. A pressure
regulating valve should be installed
to insure air supply pressure does not
exceed recommended limits.
AIR VALVE LUBRICATION
The air distribution valve and the
pilot valve are designed to operate
WITHOUT lubrication. This is the
preferred mode of operation. There may
be instances of personal preference
or poor quality air supplies when
lubrication of the compressed air
supply is required. The pump air system
will operate with properly lubricated
compressed air supply. Proper
lubrication requires the use of an air line
lubricator (available from Warren Rupp)
set to deliver one drop of SAE 10 nondetergent oil for every 20 SCFM (9.4
liters/sec.) of air the pump consumes
at the point of operation. Consult the
pump’s published Performance Curve
to determine this.
AIR LINE MOISTURE
Water in the compressed air supply
can create problems such as icing or
freezing of the exhaust air, causing
the pump to cycle erratically or stop
operating. Water in the air supply can
be reduced by using a point-of-use
air dryer to supplement the user’s air
drying equipment. This device removes
water from the compressed air supply
and alleviates the icing or freezing
problems.
AIR INLET AND PRIMING
To start the pump, open the air
valve approximately 1/2" to 3/4" turn.
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 efcient air ow to pump
ow ratio.
BETWEEN USES
When the pump is used for materials
that tend to settle out or solidify when
not in motion, the pump should be
flushed after each use to prevent
damage. (Product remaining in the
pump between uses could dry out or
settle out. This could cause problems
with the diaphragms and check valves
at restart.) In freezing temperatures
the pump must be completely drained
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 6
INSTALLATION GUIDE
Top Discharge Ball Valve Unit
Available from
Warren Rupp
1
DA10 Surge Dampener
020-049-000 Filter/Regulator
2
3
Air Dryer
CAUTION
The air exhaust should be
piped to an area for safe
disposition of the product
being pumped, in the event
of a diaphragm failure.
1
Surge
Dampener
Limited to
100 psi
3
2
M10nmdl1sm-rev0513 Models M10 Non-Metallic Page 7
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