excess lubrication will reduce pump performance.
Pump is pre-lubed.
TEMPERATURE LIMITS:
Neoprene –17.7°C to 93.3°C 0°F to 200°F
Buna-N –12.2°C to 82.2°C 10°F to 180°F
EPDM –51.1°C to 137.8°C –60°F to 280°F
Viton
Sanifl ex™ –28.9°C to 104.4°C –20°F to 220°F
Polytetrafl uoroethylene (PTFE)
4.4°C to 104.4°C 40°F to 220°F
Polyurethane –12.2°C to 65.6°C 10°F to 150°F
Tetra-Flex™ PTFE w/Neoprene Backed
4.4°C to 107.2°C 40°F to 225°F
Tetra-Flex™ PTFE w/Nordel® Backed
-10°C to 137°C 14°F to 280°F
Wil-Flex™ –40.0°C to 107.2°C –40°F to 225°F
®
–40°C to 176.7°C –40°F to 350°F
NOTE: Not all materials are available for all
models. Refer to Section 2 for material options
for your pump.
CAUTION: Do not exceed 82°C (180°F) air inlet
temperature for Pro-Flo X™ models.
CAUTION: Pumps should be thoroughly fl ushed
before installing into process lines. FDA and
USDA approved pumps should be cleaned and/
or sanitized before being used.
CAUTION: Always wear safety glasses when
operating pump. If diaphragm rupture occurs,
material being pumped may be forced out air
exhaust.
CAUTION: Before any maintenance or repair is
attempted, the compressed air line to the pump
should be disconnected and all air pressure
allowed to bleed from pump. Disconnect all
intake, discharge and air lines. Drain the pump
by turning it upside down and allowing any fl uid
to fl ow into a suitable container.
CAUTION: Blow out air line for 10 to 20 seconds
before attaching to pump to make sure all pipeline
debris is clear. Use an in-line air fi lter. A 5µ (micron)
air fi lter is recommended.
CAUTION: When choosing pump materials, be
sure to check the temperature limits for all wetted
components. Example: Viton® has a maximum
limit of 176.7°C (350°F) but polypropylene has a
maximum limit of only 79°C (175°F).
CAUTION: Maximum temperature limits are
based upon mechanical stress only. Certain
chemicals will signifi cantly reduce maximum
safe operating temperatures. Consult Chemical
Resistance Guide (E4) for chemical compatibility
and temperature limits.
WARNING : Prevention of static sparking — If
static sparking occurs, fi re or explosion could
result. Pump, valves, and containers must be
grounded to a proper grounding point when
handling fl ammable fl uids and whenever
discharge of static electricity is a hazard.
CAUTION: Do not exceed 8.6 bar (125 psig) air
supply pressure.
CAUTION: The process fl uid and cleaning fl uids
must be chemically compatible with all wetted
pump components. Consult Chemical Resistance
Guide (E4).
NOTE: When installing PTFE diaphragms, it is
important to tighten outer pistons simultaneously
(t urning in opposite directions) to ens ure tigh t fi t.
(See torque specifi cations in Section 7.)
NOTE: Cast Iron PTFE-fi tted pumps come
standard from the factory with expanded PTFE
gaskets installed in the diaphragm bead of the
liquid chamber. PTFE gaskets cannot be re-used.
Consult PS-TG for installation instructions during
reassembly.
NOTE: Before starting disassembly, mark a line
from each liquid chamber to its corresponding air
chamber. This line will assist in proper alignment
during reassembly.
CAUTION: Pro-Flo® pumps cannot be used in
submersible applications. Pro-Flo X™ is available
in both sub mersible and n on-subm ersible options.
Do not use non-submersible Pro-Flo X™ models
in submersible applications. Turbo-Flo™ pumps
can also be used in submersible applications.
CAUTION: Tighten all hardware prior to installation.
WIL-10330-E-041 WILDEN PUMP & ENGINEERING, LLC
Section 2
WILDEN PUMP DESIGNATION SYSTEM
PX15 METAL
76 mm (3") Pump
Maximum Flow Rate:
918 lpm (243 gpm)
LEGEND
PX15 / XXXXX / XXX / XX / XXX / XXXX
MODEL
MATERIAL CODES
MODEL
PX15 = 76 MM (3")
XPX15 = 76 MM ( 3") ATE X
WETTED PARTS/OUTER
1
PISTON
AA = ALUMINUM /
ALUMINUM
SS = STAINL ESS STEEL /
STAINLESS STEEL
WW = DUCTILE IRON /
DUCTILE IRON
AIR CHAMBERS
A = ALUMINUM
S = 316 S TAINLESS STEEL
CENTER BLOCK
A = ALUMINUM
S = 316 S TAINLESS STEEL
P = POLYPROPY LENE
AIR VALVE
A = ALUMINUM
S = 316 S TAINLESS STEEL
P = POLYPROPY LENE
BNS = BUNA-N (Red Dot )
XBS = CONDUCTI VE BUNA-N
(Two Red Dots)
EPS = EPDM (Blue Dot)
2
2
PUS = POLYURETHA NE (Clear)
NES = NEOPRENE (Green Dot)
TEU = PTFE w/EPDM
BACK-UP (white)
2
TNU = P TFE w /NEOPRENE
BACK-UP (White)
FSS = SANIFL E X ™ [ Hytrel
®
(Cream)]
VT S = VI TON® (White Dot)
WFS = WIL-FLE X ™ [Santoprene
(Orange Dot)]
TSU = P TFE W/SANIFLE X ™
BACK-UP (White)
BNU = BUN A-N, ULTR A-FLE X ™
EPU = EPDM, ULT RA-FLEX™
2
NEU = NEOPRENE,
ULTRA-FLEX™
VT U = VITON®, ULTR A-FLEX ™
TSS = FULL STROKE PTFE
W/SANIFLEX™ BACK-UP
TWS = FULL STROKE PTFE
W/WIL-FLEX™ BACK-UP
O-RINGS
VALVE SE AT
VALVE BALLS
SPECIALTY
CODE
(if applicable)
VALVE BALL
BN = BUNA-N (Red Dot)
FS = SANIFLEX™
[Hytrel® (Cream)]
EP = EPDM (Blue Dot)
NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Brown)
TF = PTFE (White)
2
VT = VITON® (Silver or White Dot)
WF = W IL-FL EX ™ [San topre ne
(Orange Dot)]
VALVE SE AT
A = ALUMINUM
®
BN = BUNA-N (Red Dot)
EP = EPDM (Blue Dot)
FS = S ANIFLE X ™ [H ytrel®
(Cream)]
NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Brown)
VT = VITON® (Silver or White
Dot)
WF = W IL-FL EX ™ [San topre ne®
(Orange Dot)]
M = MILD STEEL
S = STAINL ESS STEEL
VALVE SE AT O-RING
TF = PTFE (White)
2
2
®
2
SPECIALTY CODES
0014 BSPT
0022 External SS fasteners
0044 Stallion balls & seats only
0070 SaniFlo
0079 Tri-clamp
0080 Tri-clamp
0100 Wil-Gard II
0102 Wil-Gard II
0103 Wil-Gard II
™
FDA
™
fittings, wing nuts
™
fittings, ONLY
™
110V
™
sensor wires ONLY
™
220V
NOTE: MOST EL AST OMERIC MATERIALS USE COLORED DOTS FOR IDENTIFICATION.
NOTE: Not all models are available with all materials options.
®
Viton
is a registered trademark of DuPont Dow Elastomers.
WILDEN PUMP & ENGINEERING, LLC 2 WIL-10330-E-04
0118 Stallion balls & seats only, BSPT0120
0319 Single-Point Exhaust center block, BSPT
0320 Single-Point Exhaust center block
0324 Single-Point Exhaust center block,
0327 Single-Point Exhaust center block,
™
Saniflo
FDA, Wil-Gard II™ 110V
Screen based
Stallion externals, balls & seats
0341 Single-Point Exhaust center block,
SaniFlo™ FDA
Section 3
HOW IT WORKS—PUMP
The Wilden diaphragm pump is an air-operated, positive displacement, self-priming pump. These drawings show fl ow pattern
through the pump upon its initial stroke. It is assumed the pump has no fl uid in it prior to its initial stroke.
FIGURE 1 The air valve dir ects pre ssurized
air to the back side of diaphragm A. The
compressed air is applied directly to the
liquid column separated by elastomeric
diaphragms. The diaphragm acts as
a separation membrane bet ween the
compressed air and liquid, balancing the
load and removing mechanical stress
from the diaphragm. The compressed
air moves the diaphragm away from
the center of the pump. The opposite
diaphragm is pulled in by the shaft
connected to the pressurized diaphragm.
Diaphragm B is on its suction stroke; air
behind the diaphragm has been forced
out to atmosphere through the exhaust
port of the pump. The movement of
diaphragm B toward the center of the
pump creates a vacuum within chamber B.
Atmospheric pressure forces fl uid into
the inlet manifold forcing the inlet valve
ball off its seat. Liquid is free to move
past the inlet valve ball and fi ll the liquid
chamber (see shaded area).
HOW IT WORKS—AIR DISTRIBUTION SYSTEM
FIGURE 2 When the pressurized diaphragm,
diaphra gm A, re aches t he limit of it s disc harge
stroke, the air valve redirects pressurized
air to the back side of diaphragm B. The
pressurized air forces diaphragm B away
from the center while pulling diaphragm A
to the center. Diaphragm B is now on its
discharge stroke. Diaphragm B forces the
inlet valve ball onto its seat due to the
hydraulic forces developed in the liquid
chamber and manifold of the pump. These
same hydraulic forces lift the discharge
valve ball off its seat, while the opposite
discharge valve ball is forced onto its seat,
forcing fl uid to fl ow through the pump
discharge. The movement of diaphragm A
toward the center of the pump creates a
vacuum within liquid chamber A. Atmospheric pressure forces fl uid into the inlet
manifold of the pump. The inlet valve ball
is forced off its seat allowing the fl uid being
pumped to fi ll the liquid chamber.
FIGURE 3 At completion of the stroke,
the air valve again redirects air to the
back side of diaphragm A, which starts
diaphragm B on its exhaust stroke. As
the pump reaches its original star ting
point, each diaphragm has gone through
one exhaust and one discharge stroke.
This constitutes one complete pumping
cycle. The pump may take several cycles
to completely prime depending on the
conditions of the application.
The Pro -Flo
moving parts: the air valve spool and the pilot spool. The heart of
the system is the air valve spool and air valve. This valve design
incorporates an unbalanced spool. The smaller end of the spool
is pressurized continuously, while the large end is alternately
pressurized then exhausted to move the spool. The spool directs
pressurized air to one air chamber while exhausting the other.
The air causes the main shaft/ diaphragm assembly to shift to
one side — discharging liquid on that side and pulling liquid in
on the other side. When the shaf t reaches the end of its stroke,
the inner piston actuates the pilot spool, which pressurizes and
exhausts the large end of the air valve spool. The repositioning
of the air valve spool routes the air to the other air chamber.
offers fl exibility never before seen in the world of
AODD pumps. The
patent-pending EMS
is simple and easy
to use. With the
turn of an integrated
TM
Operating Principal
control dial, the operator can select the optimal
balance of fl ow and effi ciency that best meets the
application needs. Pro-Flo X™ provides higher
performance, lower
operational costs
and fl exibility that
exceeds previous
industry standards.
AIR CONSUMPTION
$
$
$
Turning the dial
changes the
relationship
between air inlet
and exhaust
porting.
WILDEN PUMP & ENGINEERING, LLC 6 PX15 Performance
Each dial setting
represents an
entirely different
fl ow curve
Pro-Flo X™ pumps
are shipped from
the factory on
setting 4, which
is the highest
fl ow rate setting
possible
Moving the dial
from setting 4
causes a decrease
in fl ow and an even
greater decrease in
air consumption.
When the air
consumption
decreases more
than the fl ow
rate, effi ciency
is improved and
operating costs
are reduced.
HOW TO USE THIS EMS CURVE
Example 1
SETTING 4 PERFORMANCE CURVE
Figure 1Figure 2
Example data point = Example data point =
This is an example showing how to determine fl ow rate and
air consumption for your Pro-Flo X™ pump using the Effi ciency Management System (EMS) curve and the performance
curve. For this example we will be using 4.1 bar (60 psig) inlet
air pressure and 2.8 bar (40 psig) discharge pressure and EMS
setting 2.
Step 1:
Identifying performance at setting 4. Locate
the curve that represents the fl ow rate of the
pump with 4.1 bar (60 psig) air inlet pressure.
Mark the point where this curve crosses the
horizontal line representing 2.8 bar (40 psig)
discharge pressure. (Figure 1). After locating
your performance point on the fl ow curve,
draw a vertical line downward until reaching
the bottom scale on the chart. Identify the fl ow
rate (in this case, 8.2 gpm). Observe location
of performance point relative to air consumption curves and approximate air consumption
value (in this case, 9.8 scfm).
8.2
GPM
curve, draw vertical lines downward until
reaching the bottom scale on the chart. This
identifi es the fl ow X Factor (in this case, 0.58)
and air X Factor (in this case, 0.48).
Step 3:
Calculating performance for specific EMS
setting. Multiply the fl ow rate (8.2 gpm)
obtained in Step 1 by the fl ow X Factor multiplier (0.58) in Step 2 to determine the fl ow rate
at EMS setting 2. Multiply the air consumption (9.8 scfm) obtained in Step 1 by the air
X Factor multiplier (0.48) in Step 2 to determine the air consumption at EMS setting 2
(Figure 3).
8.2
gpm
.58
4.8
gpm
0.58
0.48
(fl ow rate for Setting 4)
(Flow X Factor setting 2)
(Flow rate for setting 2)
EMS CURVE
fl ow multiplier
air multiplier
Step 2:
Determining flow and air X Factors. Locate
your discharge pressure (40 psig) on the vertical axis of the EMS curve (Figure 2). Follow
along the 2.8 bar (40 psig) horizontal line until
intersecting both fl ow and air curves for your
desired EMS setting (in this case, setting 2).
Mark the points where the EMS curves intersect the horizontal discharge pressure line.
After locating your EMS points on the EMS
PX15 Performance 7 WILDEN PUMP & ENGINEERING, LLC
9.8
scfm
(air consumption for setting 4)
.48
4.7
Figure 3
The fl ow rate and air consumption at Setting
2 are found to be 18.2 lpm (4.8 gpm) and 7.9
Nm3/h (4.7 scfm) respectively.
(Air X Factor setting 2)
scfm
(air consumption for setting 2)
HOW TO USE THIS EMS CURVE
Example 2.1
SETTING 4 PERFORMANCE CURVE
EMS Flow
Settings 1 & 2
Figure 4
Example data point =
This is an example showing how to determine the inlet air
pressure and the EMS setting for your Pro-Flo X™ pump to
optimize the pump for a specifi c application. For this example we will be using an application requirement of 18.9 lpm
(5 gpm) fl ow rate against 2.8 bar (40 psig) discharge pressure.
This example will illustrate how to calculate the air consumption that could be expected at this operational point.
10.2
DETERMINE EMS SETTING
Step 1
: Establish inlet air pressure. Higher air pres-
sures will typically allow the pump to run
more effi ciently, however, available plant air
pressure can vary greatly. If an operating
pressure of 6.9 bar (100 psig) is chosen when
gpm
0.49
In our example it is 38.6 lpm (10.2 gpm). This
is the setting 4 fl ow rate. Observe the location of the performance point relative to air
consumption curves and approximate air
consumption value. In our example setting
4 air consumption is 24 Nm3/h (14 scfm).
See fi gure 4.
Step 3
: Determine flow X Factor. Divide the required
fl ow rate 18.9 lpm (5 gpm) by the setting 4 fl ow
rate 38.6 lpm (10.2 gpm) to determine the fl ow
X Factor for the application.
5
gpm / 10.2 gpm = 0.49 (flow X Factor)
plant air frequently dips to 6.2 bar (90 psig)
Step 4
pump performance will vary. Choose an operating pressure that is within your compressed
air system's capabilities. For this example we
will choose 4.1 bar (60 psig).
: Determine EMS setting from the flow
X Factor. Plot the point representing the fl ow
X Factor (0.49) and the application discharge
pressure 2.8 bar (40 psig) on the EMS curve.
This is done by following the horizontal 2.8
Step 2
: Determine performance point at setting 4. For
this example an inlet air pressure of 4.1 bar
(60 psig) inlet air pressure has been chosen.
Locate the curve that represents the performance of the pump with 4.1 bar (60 psig) inlet
air pressure. Mark the point where this curve
crosses the horizontal line representing 2.8
bar (40 psig) discharge pressure. After locating this point on the fl ow curve, draw a vertical line downward until reaching the bottom
scale on the chart and identify the fl ow rate.
bar (40 psig) psig discharge pressure line until
it crosses the vertical 0.49 X Factor line. Typically, this point lies between two fl ow EMS
setting curves (in this case, the point lies between the fl ow curves for EMS setting 1 and
2). Observe the location of the point relative
to the two curves it lies between and approximate the EMS setting (fi gure 5). For more precise results you can mathematically interpolate between the two curves to determine the
optimal EMS setting.
For this example the EMS setting is 1.8.
WILDEN PUMP & ENGINEERING, LLC 8 PX15 Performance
EMS CURVE
Figure 5
fl ow multiplier
Example 2.2
Figure 6
Example data point =
HOW TO USE THIS EMS CURVE
SETTING 4 PERFORMANCE CURVE
10.2
gpm
Example data point =
EMS Air
Settings 1 & 2
0.40
EMS CURVE
Figure 7
air multiplier
Determine air consumption at a specific
EMS setting.
Step 1
: Determine air X Factor. In order to determine
the air X Factor, identify the two air EMS setting curves closest to the EMS setting established in example 2.1 (in this case, the point lies
between the air curves for EMS setting 1 and
2). The point representing your EMS setting
(1.8) must be approximated and plotted on the
EMS curve along the horizontal line representing your discharge pressure (in this case, 40
psig). This air point is different than the fl ow
point plotted in example 2.1. After estimating
(or interpolating) this point on the curve, draw
a vertical line downward until reaching the
bottom scale on the chart and identify the air
X Factor (fi gure 7).
For this example the air X Factor is 0.40
Step 2
: Determine air consumption. Multiply your
setting 4 air consumption (14 scfm) value by
the air X Factor obtained above (0.40) to determine your actual air consumption.
1
4 scfm x 0.40 = 5.6 SCFM
In summary, for an application requiring 18.9 lpm
(5 gpm) against 2.8 bar (40 psig) discharge pressure,
the pump inlet air pressure should be set to 4.1 bar
(60 psig) and the EMS dial should be set to 1.8. The
pump would then consume 9.5 Nm3/h (5.6 scfm) of
compressed air.
PX15 Performance 9 WILDEN PUMP & ENGINEERING, LLC
PERFORMANCE
/h (90 scfm)
3
EMS CURVE
/h (42 scfm). The fl ow rate was reduced by 28% while
3
of air when run at 4.1 bar (60 psig) air inlet pressure and 1.4 bar (20
psig) discharge pressure (See dot on performance curve).
The end user did not require that much fl ow and wanted to reduce
air consumption at his facility. He determined that EMS setting 2
would meet his needs. At 1.4 bar (20 psig) discharge pressure and
EMS setting 2, the fl ow “X factor” is 0.72 and the air “X factor” is
0.53 (see dots on EMS curve).
Multiplying the original setting 4 values by the “X factors” provides
the setting 2 fl ow rate of 425 lpm (112 gpm) and an air consumption
EXAMPLE
A PX15 aluminum, Rubber-fi tted pump operating at EMS setting 4,
achieved a fl ow rate of 591 lpm (156 gpm) using 153 Nm
of 72 Nm
the air consumption was reduced by 53%, thus providing increased
effi ciency.
For a detailed example for how to set your EMS, see beginning of
performance curve section.
Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.