Santoprene® Injection molded thermoplastic elastomer with no fabric layer. Long mechanical flex212°F-10°F50° to 212°F
SantopreneSantoprene
life. Excellent abrasion resistance.100°C-23°C10°C to 100°C
VV
irginirgin
PTFEPTFE
V
irgin
PTFE Chemically inert, virtually imper vious. Very few chemicals are known to react chemically with
VV
irginirgin
PTFEPTFE
Virgin PTFE: molten alkali metals, turbulent liquid or gaseous fluorine and a few fluoro-chemicals such as212°F-35°F50°F to 212°F
chlorine trifluoride or oxygen difluoride which readily liberate free fluorine at elevated temperatures.100°C-37°C10°C to 100°C
PolyurethanePolyurethane
Polyurethane High tensile material with excellent abrasion resistance. A general purpose material210°F-40F-40°F to 210°F
PolyurethanePolyurethane
with excellent resistance to most oils.99°C-40°C-40°C to 99°C
PVDFPVDF
PVDF200°F10°F
PVDFPVDF
PolypropylenePolypropylene
Polypropylene150°F40°F
PolypropylenePolypropylene
NylonNylon
Nylon120°F32°F
NylonNylon
Conductive AcetalConductive Acetal
Conductive Acetal
Conductive AcetalConductive Acetal
BunaBuna
Buna
BunaBuna
For specific applications, always consult “Chemical Resistance Chart” Technical Bulletin
SandPIPER II
®
Operating temperature limitations are as follows:
pumps are designed to be powered only by compressed air .
CAPACITY
0 to 14 gallons per minute
(0 to 52 liters per minute)
AIR VALVE
No-lube, no-stall
design
SOLIDS-HANDLING
Up to .125 in. (3mm)
Maximum*Maximum*
Maximum*
Maximum*Maximum*
93°C-13°C
65°C5°C
48°C0°C
180°F180°F
180°F
180°F180°F
82°C82°C
82°C
82°C82°C
190°F
88°C
*Definite reduction in service life.
**Minimal reduction in service life at ends of range.
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.
INST ALLA TION AND ST AR T -UP
Locate the pump as close to the
product being pumped as possible. Keep
the suction line length and number of
fittings to a minimum. Do not reduce the
suction line diameter.
For installations of rigid piping, short
sections of flexible hose should be
installed between the pump and the
piping. The flexible hose reduces
vibration and strain to the pumping
system. A Warren Rupp DA05 Surge
Dampener is recommended to further
reduce pulsation in flow.
AIR SUPPLY
Air supply pressure cannot exceed
100 psi (7 bar). Connect the pump air
inlet to an air supply of sufficient capacity
and pressure required for desired
performance. When the air supply line
is solid piping, use a short length of
flexible hose not less than ½" (13mm)
in diameter between the pump and the
piping to reduce strain to the piping. The
weight of the air supply line, regulators
and filters 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 LUBRICA TION
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 non-detergent 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
T o start the pump, open the air valve
approximately ½ to ¾ turn. After the
pump primes, the air valve can be opened
to increase air flow as desired. If opening
the valve increases cycling rate, but does
not increase the rate of flow, cavitation
has occurred. The valve should be closed
slightly to obtain the most efficient air
flow to pump flow 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 between uses in
all cases.
What to Check: Excessive suction lift
in system.
Corrective Action: For lifts exceeding
20 feet (6 meters), filling the pumping
chambers with liquid will prime the pump
in most cases.
What to Check: Excessive flooded
suction in system.
Corrective Action: For flooded
conditions exceeding 10 feet (3 meters)
of liquid, install a back pressure device.
What to Check: System head exceeds
air supply pressure.
Corrective Action: Increase the inlet air
pressure to the pump. Most diaphragm
pumps are designed for 1:1 pressure
ratio at zero flow.
What to Check: Air supply pressure or
volume exceeds system head.
Corrective Action: Decrease inlet air
pressure and volume to the pump as
calculated on the published
PERFORMANCE CURVE. Pump is
cavitating the fluid by fast cycling.
What to Check: Undersized suction
line.
Corrective Action: Meet or exceed
pump connection recommendations
shown on the DIMENSIONAL
DRAWING.
What to Check: Restricted or
undersized air line.
Corrective Action: Install a larger air
line and connection. Refer to air inlet
recommendations shown in your pump’s
SERVICE MANUAL.
What to Check: Check ESADS, the
Externally Serviceable Air Distribution
System of the pump.
Corrective Action: Disassemble and
inspect the main air distribution valve,
pilot valve and pilot valve actuators. Refer
to the parts drawing and air valve section
of the SERVICE MANUAL. Check for
clogged discharge or closed valve before
reassembly .
What to Check: Rigid pipe connections
to pump.
Corrective Action: Install flexible
connectors and a Warren Rupp surge
dampener.
What to Check: Blocked air exhaust
muffler.
Corrective Action: Remove muffler
screen, clean or de-ice and reinstall.
Refer to the Air Exhaust section of your
pump SERVICE MANUAL.
What to Check: Pumped fluid in air
exhaust muffler .
Corrective Action: Disassemble pump
chambers. Inspect for diaphragm rupture
or loose diaphragm plate assembly . Refer
to the Diaphragm Replacement section
of your pump SERVICE MANUAL.
What to Check: Suction side air
leakage or air in product.
Corrective Action: Visually inspect all
suction side gaskets and pipe
connections.
What to Check: Obstructed check
valve.
Corrective Action: Disassemble the wet
end of the pump and manually dislodge
obstruction in the check valve pocket.
Refer to the Check V alve section of the
pump SERVICE MANUAL for
disassembly instructions.
What to Check: Worn or misaligned
check valve or check valve seat.
Corrective Action: Inspect check valves
and seats for wear and proper seating.
Replace if necessary. Refer to Check
Valve section of the pump SERVICE
MANUAL for disassembly instructions.
What to Check: Blocked suction line.
Corrective Action: Remove or flush
obstruction. Check and clear all suction
screens and strainers.
What to Check: Blocked discharge line.
Corrective Action: Check for
obstruction or closed discharge line
valves.
What to Check: Blocked pumping
chamber.
Corrective Action: Disassemble and
inspect the wetted chambers of the
pump. Remove or flush any obstructions.
Refer to the pump SERVICE MANUAL
for disassembly instructions.
What to Check: Entrained air or vapor
lock in one or both pumping chambers.
Corrective Action: Purge chambers
through tapped chamber vent plugs.
PURGING THE CHAMBERS OF AIR
CAN BE DANGEROUS! Contact the
Warren Rupp Technical Services
Department before performing this
procedure. A model with top-ported
discharge will reduce or eliminate
problems with entrained air.
If your pump continues to perform
below your expectations, contact your
local Warren Rupp Distributor or factory
Technical Services Group for a service
evaluation.