Wilden P4 series User manual

WIL-10310-E-07
Replaces WIL-10310-E-06
Simplify your process
Engineering
Operation &
Maintenance
Original™Series METAL Pumps
P4/PX4

TABLE OF CONTENTS
SECTION 1 CAUTIONS—READ FIRST! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SECTION 2 WILDEN PUMP DESIGNATION SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SECTION 3 HOW IT WORKS—PUMP & AIR DISTRIBUTION SYSTEM . . . . . . . . . . . . . . . .3
SECTION 4 DIMENSIONAL DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SECTION 5 PERFORMANCE
A. P4 Metal Performance Curves
Rubber-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
TPE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Reduced Stroke PTFE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Full Stroke PTFE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Ultra-Flex™-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Suction Lift Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
B. PX4 Performance
Operating Principal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
How to Use this EMS Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Performance Curves
Rubber-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
TPE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Reduced Stroke PTFE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Full Stroke PTFE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Ultra-Flex™-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Suction Lift Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
SECTION 6 SUGGESTED INSTALLATION, OPERATION & TROUBLESHOOTING. . . . . . .23
SECTION 7 DISASSEMBLY / REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
SECTION 8 EXPLODED VIEW AND PARTS LISTING
P4 Metal
Full Stroke Diaphragm-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Reduced Stroke Diaphragm-Fitted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
1-Piece Center Section Full Stroke Diaphragm-Fitted. . . . . . . . . . . . . . . . . . . . . . .38
1-Piece Center Section Reduced Stroke Diaphragm-Fitted . . . . . . . . . . . . . . . . . .40
PX4 Metal
Full Stroke Diaphragm-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Reduced Stroke Diaphragm-Fitted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
SECTION 9 ELASTOMER OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

WIL-10310-E-07 1 WILDEN PUMP & ENGINEERING, LLC
CAUTION: Do not apply compressed air to the
exhaust port — pump will not function.
CAUTION: Do not, under any circumstance, loosen
the set screw located at the adjust dial of the Pro-
Flo X™ pump. If the set screw is loose when the
pump is pressurized, it could eject and cause
injury to anyone in the area.
CAUTION: Do not over-lubricate air supply —
excess lubricationwillreducepumpperformance.
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®–40°C to 176.7°C –40°F to 350°F
Saniflex™ –28.9°C to 104.4°C –20°F to 220°F
Polytetrafluoroethylene (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/EPDM Backed
-10°C to 137°C 14°F to 280°F
Wil-Flex™ -40°C to 107.2°C (-40°F to 225°F)
NOTE: Not all materials are available for all
models. Refer to Section 2 for material options
for your pump.
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 significantly 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, fire or explosion could
result. Pump, valves, and containers must be
grounded to a proper grounding point when
handling flammable fluids and whenever
discharge of static electricity is a hazard.
CAUTION: Do not exceed 8.6 bar (125 psig) air
supply pressure.
CAUTION: The process fluid and cleaning fluids
must be chemically compatible with all wetted
pump components. Consult Chemical Resistance
Guide (E4).
CAUTION: Do not exceed 82°C (180°F) air inlet
temperature for Pro-Flo X™ models.
CAUTION: Pumps should be thoroughly flushed
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 fluid
to flow 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 filter. A 5µ (micron)
air filter is recommended.
NOTE: When installing PTFE diaphragms, it is
important to tighten outer pistons simultaneously
(turning in opposite directions) to ensure tight fit.
(See torque specifications in Section 7.)
NOTE: Cast Iron PTFE-fitted 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
inbothsubmersible andnon-submersibleoptions.
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.
Section 1
CAUTIONS—READ FIRST!

WILDEN PUMP & ENGINEERING, LLC 2WIL-10310-E-07
NOTE: MOST ELASTOMERIC MATERIALS USE COLORED DOTS FOR IDENTIFICATION.
NOTE: Not all models are available with all material options.
Viton®is a registered trademark of DuPont Dow Elastomers.
Halar®is a registered trademark of Solvay.
SPECIALTY CODES
014 BSP
023 Wing nuts
030 Screen based
036 Screen based, BSP
044 Stallion, balls & seats ONLY
047 Stallion externals, balls and seats
067 Saniflo FDA, Wil-Gard 220V
070 Saniflo FDA
075 Saniflo FDA, Stallion balls and seats
079 Tri-clamp fittings, wing nuts
080 Tri-clamp fittings ONLY
100 Wil-Gard 110V
102 Wil-Gard sensor wires ONLY
103 Wil-Gard 220V
108 BSP, Wil-Gard 220V
118 Stallion balls and seats ONLY, BSP
120 Saniflo FDA, Wil-Gard 110V
330 Wing nuts BSP
Section 2
WILDEN PUMP DESIGNATION SYSTEM
P4/PX4 METAL
38 mm (1-1/2") Pump
Maximum Flow Rate:
348 lpm (92 gpm)
LEGEND
PX4 / XXXXX / XXX / XX / XXX/ XXXX
O-RINGS
MODEL VALVE SEAT
VALVE BALLS
DIAPHRAGMS
AIR VALVE
CENTER BLOCK
AIR CHAMBERS
WETTED PARTS & OUTER PISTON
SPECIALTY
CODE
(if applicable)
MATERIAL CODES
MODEL
P4 = PRO-FLO®
PX4 = PRO-FLO X™
X PX4 = PRO-FLO X™ ATEX
WETTED PARTS & OUTER PISTON
AA = ALUMINUM / ALUMINUM
SS = STAINLESS STEEL /
STAINLESS STEEL
WW = CAST IRON / CAST IRON
WM = CAST IRON / MILD STEEL
AIR CHAMBERS/CENTER
SECTION
A = ALUMINUM
L = ACETAL (P4 only)
N = NICKEL-PLATED
S = STAINLESS STEEL
V = HALAR®COATED
(P4 only)
CENTER SECTION/BLOCK
A = ALUMINUM (PX4 only)
L = ACETAL (P4 only)
N = NICKEL-PLATED (PX4 only)
P = POLYPROPYLENE
(P4 only)
S = STAINLESS STEEL
(PX4 only)
AIR VALVE
A = ALUMINUM (PX4 only)
L = ACETAL (P4 only)
N = NICKEL-PLATED (PX4 only)
P = POLYPROPYLENE
S = STAINLESS STEEL
(PX4 only)
DIAPHRAGMS
XBS = CONDUCTIVE BUNA-N
(Two Red Dots)
BNS = BUNA-N (Red Dot)
FSS = SANIFLEXTM
[Hytrel®(Cream)]
EPS = EPDM (Blue Dot)
NES = NEOPRENE (Green Dot)
PUS = POLYURETHANE (Clear)
TEU = PTFE W/EPDM
BACK-UP (White)
TNU = PTFE W/NEOPRENE
BACK-UP (White)
TSU = PTFE W/SANIFLEXTM
BACK-UP (White)
BNU = BUNA-N, ULTRA-FLEXTM
(Red Dot)
EPU = EPDM, ULTRA-FLEXTM
(Blue Dot)
NEU = NEOPRENE, ULTRA-FLEXTM
(Green Dot)
VTU = VITON®, ULTRA-FLEXTM
(White Dot)
VTS = VITON®(White Dot)
WFS = WIL-FLEXTM [Santoprene®
(Orange Dot)]
TSS = FULL STROKE PTFE
W/SANIFLEX™ BACK-UP
TWS = FULL STROKE PTFE
W/WIL-FLEX™ BACK-UP
VALVE BALL
BN = BUNA-N (Red Dot)
FS = SANIFLEX™ [Hytrel
®
(Cream)]
EP = EPDM (Blue Dot)
NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Clear)
TF = PTFE (White)
VT = VITON®(Silver
or White Dot)
WF= WIL-FLEX™
[Santoprene (Orange Dot)]
VALVE SEAT
A = ALUMINUM
BN = BUNA-N (Red Dot)
FS = SANIFLEX™ [Hytrel
®
(Cream)]
H = ALLOY C
M = MILD STEEL
EP = EPDM (Blue Dot)
NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Clear)
S = STAINLESS STEEL
VT = VITON®(Silver or White Dot)
WF= WIL-FLEX™
[Santoprene (Orange Dot)]
VALVE SEAT O-RING
TF = PTFE

The Wilden diaphragm pump is an air-operated, positive displacement, self-priming pump. These drawings show flow pattern
through the pump upon its initial stroke. It is assumed the pump has no fluid in it prior to its initial stroke.
FIGURE 1 The air valve directs pressurized
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 between 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 fluid into
the inlet manifold forcing the inlet valve
ball off its seat. Liquid is free to move
past the inlet valve ball and fill the liquid
chamber (see shaded area).
FIGURE 2 When the pressurized diaphragm,
diaphragm A, reaches the limit of its discharge
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 fluid to flow through the pump
discharge. The movement of diaphragm A
toward the center of the pump creates a
vacuum within liquid chamber A. Atmos-
pheric pressure forces fluid into the inlet
manifold of the pump. The inlet valve ball
is forced off its seat allowing the fluid being
pumped to fill 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 starting
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®patented air distribution system incorporates two
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 shaft 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.
Section 3
HOW IT WORKS—PUMP
HOW IT WORKS—AIR DISTRIBUTION SYSTEM
WIL-10310-E-07 3WILDEN PUMP & ENGINEERING, LLC

Section 4
DIMENSIONAL DRAWINGS
P4 Metal
P4 Metal SanifloFDA
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A368 14.5
B64 2.5
C206 8.1
D429 16.9
E147 5.8
F308 12.1
G211 8.3
H 262 10.3
J224 8.8
K152 6.0
L178 7.0
M51 2.0
N10 0.4
P335 13.2
R224 8.8
S135 5.3
T196 7.7
U48 1.9
V13 0.5
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A389 15.3
B64 2.5
C206 8.1
D442 17.4
E308 12.1
F 262 10.3
G224 8.8
H211 8.3
J152 6.0
K178 7.0
L66 2.6
M10 0.4
32 mm (1-1/4") FNPT
LIQUID DISCHARGE
13 mm (1/2") FNPT
AIR INLET
38 mm (1-1/2")
FNPT LIQUID INLET
19 mm
(3/4") FNPT
EXHAUST
C
B
A
D
H
J
M
KL
N
E
F
G
ST
P
R
V
U
FOOTED BASE FOR STAINLESS STEEL
& ALLOY C MODELS
BASE FOR ALUMINUM
& CAST IRON MODELS
JK
L
M
51 mm (2" ) TRI-CLAMP LIQUID DISCHARGE
13 mm
(1/2") FNPT
AIR INLET
19 mm
(3/4") FNPT
EXHAUST
H
D
E
F
G
C
B
A
51 mm (2" )
TRI-CLAMP LIQUID INLET
WILDEN PUMP & ENGINEERING, LLC 4WIL-10310-E-07

DIMENSIONAL DRAWINGS
PX4 Metal
PX4 Metal SanifloFDA
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A 368 14.5
B 64 2.5
C 213 8.4
D 429 16.9
E 216 8.5
F 48 1.9
G 147 5.8
H 320 12.6
J 531 20.9
K 51 2.0
L 262 10.3
M 224 8.8
N 150 5.9
P 178 7.0
R 10 0.4
S 48 1.9
T 338 13.3
U 224 8.8
V 155 6.1
W 193 7.6
X 13 0.5
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A 396 15.6
B 64 2.5
C 213 8.4
D 442 17.4
E 48 1.9
F 147 5.8
G 320 12.6
H 531 20.9
J 216 8.5
K 262 10.3
L 208 8.2
M 152 6.0
N 178 7.0
P 69 2.8
R 10 0.4
WIL-10310-E-07 5WILDEN PUMP & ENGINEERING, LLC

P4 METAL
RUBBER-FITTED
A. P4 Performance Curves
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump performance curve.
Height .................................429 mm (16.9")
Width .................................. 368 mm (14.5")
Depth ...................................307 mm (12.1")
Est. Ship Weight ... Aluminum 13 kg (29 lbs.)
316 Stainless Steel 20 kg (45 lbs.)
Cast Iron 22 kg (49 lbs.)
Alloy C 23 kg (51 lbs.)
Air Inlet...................................19 mm (3/4")
Inlet ......................................38 mm (1-1/2")
Outlet...................................32 mm (1-1/4")
Suction Lift ......................5.8 m Dry (19.0')
8.0 m Wet (26.0')
Displacement/Stroke.... 0.98 L (0.26 gal.)1
Max. Flow Rate..............288 lpm (76 gpm)
Max. Size Solids.................4.8 mm (3/16")
1Displacement per stroke was calculated
at 4.8 bar (70 psig) air inlet pressure
against a 2.1 bar (30 psig) head pressure.
Example: To pump 102 lpm (27 gpm)
against a discharge pressure head of
2.7 bar (40 psig) requires 4.1 bar (60 psig)
and 22 Nm3/h (13 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
Section 5A
PERFORMANCE
P4 METAL
TPE-FITTED
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump performance curve.
Height .................................429 mm (16.9")
Width .................................. 368 mm (14.5")
Depth ...................................307 mm (12.1")
Est. Ship Weight ... Aluminum 13 kg (29 lbs.)
316 Stainless Steel 20 kg (45 lbs.)
Cast Iron 22 kg (49 lbs.)
Alloy C 23 kg (51 lbs.)
Air Inlet...................................19 mm (3/4")
Inlet ......................................38 mm (1-1/2")
Outlet...................................32 mm (1-1/4")
Suction Lift ...................... 5.2 m (17.0' Dry)
8.8 m (29.0' Wet)
Displacement/Stroke.......1.1 L (0.29 gal.)1
Max. Flow Rate..............307 lpm (81 gpm)
Max. Size Solids.................4.8 mm (3/16")
1Displacement per stroke was calculated
at 4.8 bar (70 psig) air inlet pressure
against a 2.1 bar (30 psig) head pressure.
Example: To pump 114 lpm (30 gpm)
against a discharge pressure head of
2.7 bar (40 psig) requires 4.1 bar (60 psig)
and 26 Nm3/h (15 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
WILDEN PUMP & ENGINEERING, LLC 6WIL-10310-E-07

P4 METAL
REDUCED STROKE PTFE-FITTED
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump performance curve.
Height .................................429 mm (16.9")
Width .................................. 368 mm (14.5")
Depth ...................................307 mm (12.1")
Est. Ship Weight ... Aluminum 13 kg (29 lbs.)
316 Stainless Steel 20 kg (45 lbs.)
Cast Iron 22 kg (49 lbs.)
Alloy C 23 kg (51 lbs.)
Air Inlet...................................19 mm (3/4")
Inlet ......................................38 mm (1-1/2")
Outlet...................................32 mm (1-1/4")
Suction Lift .........................3.7 m Dry (12')
8.5 m Wet (28')
Displacement/Stroke.....0.53 L (0.14 gal.)1
Max. Flow Rate..............295 lpm (78 gpm)
Max. Size Solids.................4.8 mm (3/16")
1Displacement per stroke was calculated
at 4.8 bar (70 psig) air inlet pressure
against a 2.1 bar (30 psig) head pressure.
Example: To pump 83 lpm (22 gpm)
against a discharge pressure head of
2.7 bar (40 psig) requires 4.1 bar (60 psig)
and 34 Nm3/h (20 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
PERFORMANCE
P4 METAL
FULL STROKE PTFE-FITTED
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump performance curve.
Height .................................429 mm (16.9”)
Width ..................................368 mm (14.5”)
Depth .................................. 307 mm (12.1”)
Ship Weight ...... Aluminum 13 kg (29 lbs.)
316 Stainless Steel 20kg (45 lbs.)
Cast Iron 22 kg (49 lbs.)
Alloy C 23 kg (51 lbs.)
Air Inlet...................................13 mm (1/2”)
Inlet ..................................... 38 mm (1-1/2”)
Outlet...................................32 mm (1-1/4”)
Suction Lift ...................... 6.4m Dry (21.0’)
9.3 m Wet (30.6’)
Disp. Per Stroke................... 1.1 l (.28 gal.)1
Max. Flow Rate...........330 lpm (87.2 gpm)
Max. Size Solids................ 4.8 mm (3/16”)
1Displacement per stroke was calculated
at 4.8 bar (70 psig) air inlet pressure
against a 2.1 bar (30 psig)head pressure.
Example: To pump 68 GPM against a
discharge head of 20 psig requires 60
psig and 60 scfm air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
WIL-10310-E-07 7WILDEN PUMP & ENGINEERING, LLC

P4 METAL
ULTRA-FLEXTM-FITTED
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump performance curve.
Height .................................429 mm (16.9")
Width .................................. 368 mm (14.5")
Depth ...................................307 mm (12.1")
Est. Ship Weight ... Aluminum 13 kg (29 lbs.)
316 Stainless Steel 20 kg (45 lbs.)
Cast Iron 22 kg (49 lbs.)
Alloy C 23 kg (51 lbs.)
Air Inlet................................... 13 mm (1/2")
Inlet ......................................38 mm (1-1/2")
Outlet...................................32 mm (1-1/4")
Suction Lift ...................... 5.2 m (17.0' Dry)
8.5 m Wet (28.0')
Displacement/Stroke.....0.76 L (0.20 gal.)1
Max. Flow Rate..............269 lpm (71 gpm)
Max. Size Solids.................4.8 mm (3/16")
1Displacement per stroke was calculated
at 4.8 bar (70 psig) air inlet pressure
against a 2.1 bar (30 psig) head pressure.
Example: To pump 170 lpm (45 gpm)
against a discharge pressure head of
2.0 bar (30 psig) requires 4.1 bar (60 psig)
and 85 Nm3/h (50 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
PERFORMANCE
WILDEN PUMP & ENGINEERING, LLC 8WIL-10310-E-07

WIL-10310-E-07 9WILDEN PUMP & ENGINEERING, LLC
P4 METAL SUCTION
LIFT CAPABILITY
Ultra-Flex Diaphragms
TPE Diaphragms
Traditional Rubber Diaphragms
Full Stroke PTFE Diaphragms
Reduced Stroke PTFE Diaphragms
26
24
22
20
18
16
14
12
10
8
6
4
2
0
7
6
5
4
3
2
1
0
0 10 20 30 40 50 60 70 80 90 100
[0.7] [1.4] [2.0] [2.7] [3.4] [4.1] [4.8] [5.5] [6.2] [6.9]
Suction lift curves are calibrated for pumps operating
at 305 m (1,000') above sea level. This chart is meant
to be a guide only. There are many variables which
can affect your pump’s operating characteristics. The
number of intake and discharge elbows, viscosity of
pumping fluid, elevation (atmospheric pressure) and
pipe friction loss all affect the amount of suction lift
your pump will attain.
Section 5C
SUCTION LIFT CURVES

Section 5C
NOTES

PX4
M E T A L
PX4 PERFORMANCE

The Pro-Flo X™ air distribution system with the
revolutionary Efficiency Management System (EMS)
offers flexibility 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
control dial, the operator can select the optimal
balance of flow and efficiency that best meets the
application needs. Pro-Flo X™ provides higher
performance, lower
operational costs
and flexibility that
exceeds previous
industry standards.
Pro-Flo XTM Operating Principal
Section 5B
Turning the dial
changes the
relationship
between air inlet
and exhaust
porting.
Each dial setting
represents an
entirely different
flow curve
Pro-Flo X™ pumps
are shipped from
the factory on
setting 4, which
is the highest
flow rate setting
possible
Moving the dial
from setting 4
causes a decrease
in flow and an even
greater decrease in
air consumption.
When the air
consumption
decreases more
than the flow
rate, efficiency
is improved and
operating costs
are reduced.
$
$
$
AIR CONSUMPTION
WILDEN PUMP & ENGINEERING, LLC 12 PX4 Performance

HOW TO USE THIS EMS CURVE
PX4 Performance 13 WILDEN PUMP & ENGINEERING, LLC
SETTING 4 PERFORMANCE CURVE EMS CURVE
8.2 GPM
Example data point = Example data point =
Figure 1 Figure 2
0.58
0.48
flow multiplier
air multiplier
This is an example showing how to determine flow rate and
air consumption for your Pro-Flo X™ pump using the Efficien-
cy 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 flow 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 flow curve,
draw a vertical line downward until reaching
the bottom scale on the chart. Identify the flow
rate (in this case, 8.2 gpm). Observe location
of performance point relative to air consump-
tion curves and approximate air consumption
value (in this case, 9.8 scfm).
Step 2: Determining flow and air X Factors. Locate
your discharge pressure (40 psig) on the verti-
cal axis of the EMS curve (Figure 2). Follow
along the 2.8 bar (40 psig) horizontal line until
intersecting both flow and air curves for your
desired EMS setting (in this case, setting 2).
Mark the points where the EMS curves inter-
sect the horizontal discharge pressure line.
After locating your EMS points on the EMS
curve, draw vertical lines downward until
reaching the bottom scale on the chart. This
identifies the flow 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 flow rate (8.2 gpm)
obtained in Step 1 by the flow X Factor multi-
plier (0.58) in Step 2 to determine the flow rate
at EMS setting 2. Multiply the air consump-
tion (9.8 scfm) obtained in Step 1 by the air
X Factor multiplier (0.48) in Step 2 to deter-
mine the air consumption at EMS setting 2
(Figure 3).
Figure 3
The flow 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.
.58
4.8 gpm
(Flow X Factor setting 2)
(Flow rate for setting 2)
(air consumption for setting 4)
(Air X Factor setting 2)
(air consumption for setting 2)
9.8 scfm
.48
4.7 scfm
8.2 gpm (flow rate for Setting 4)
Example 1

HOW TO USE THIS EMS CURVE
WILDEN PUMP & ENGINEERING, LLC 14 PX4 Performance
EMS CURVE
SETTING 4 PERFORMANCE CURVE
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 specific application. For this exam-
ple we will be using an application requirement of 18.9 lpm
(5 gpm) flow rate against 2.8 bar (40 psig) discharge pressure.
This example will illustrate how to calculate the air consump-
tion that could be expected at this operational point.
Step 1 : Establish inlet air pressure. Higher air pres-
sures will typically allow the pump to run
more efficiently, however, available plant air
pressure can vary greatly. If an operating
pressure of 6.9 bar (100 psig) is chosen when
plant air frequently dips to 6.2 bar (90 psig)
pump performance will vary. Choose an oper-
ating pressure that is within your compressed
air systems capabilities. For this example we
will choose 4.1 bar (60 psig).
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 perfor-
mance 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 locat-
ing this point on the flow curve, draw a verti-
cal line downward until reaching the bottom
scale on the chart and identify the flow rate.
In our example it is 38.6 lpm (10.2 gpm). This
is the setting 4 flow rate. Observe the loca-
tion 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 figure 4.
Step 3 : Determine flow X Factor. Divide the required
flow rate 18.9 lpm (5 gpm) by the setting 4 flow
rate 38.6 lpm (10.2 gpm) to determine the flow
X Factor for the application.
Step 4 : Determine EMS setting from the flow
X Factor. Plot the point representing the flow
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
bar (40 psig) psig discharge pressure line until
it crosses the vertical 0.49 X Factor line. Typi-
cally, this point lies between two flow EMS
setting curves (in this case, the point lies be-
tween the flow curves for EMS setting 1 and
2). Observe the location of the point relative
to the two curves it lies between and approxi-
mate the EMS setting (figure 5). For more pre-
cise results you can mathematically interpo-
late between the two curves to determine the
optimal EMS setting.
5 gpm / 10.2 gpm = 0.49 (flow X Factor)
DETERMINE EMS SETTING
For this example the EMS setting is 1.8.
Figure 4
Example data point = 10.2 gpm flow multiplier
Figure 5
EMS Flow
Settings 1 & 2
Example 2.1
0.49

HOW TO USE THIS EMS CURVE
PX4 Performance 15 WILDEN PUMP & ENGINEERING, LLC
EMS CURVE
SETTING 4 PERFORMANCE CURVE
Example 2.2
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 set-
ting curves closest to the EMS setting estab-
lished 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 represent-
ing your discharge pressure (in this case, 40
psig). This air point is different than the flow
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 (figure 7).
Step 2 : Determine air consumption. Multiply your
setting 4 air consumption (14 scfm) value by
the air X Factor obtained above (0.40) to deter-
mine your actual air consumption.
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.
Figure 6
0.40 air multiplier
Example data point =
Figure 7
10.2 gpm
Example data point =
For this example the air X Factor is 0.40
1 4 scfm x 0.40 = 5.6 SCFM
EMS Air
Settings 1 & 2

WILDEN PUMP & ENGINEERING, LLC 16 PX4 Performance
PERFORMANCE
SETTING 4 PERFORMANCE CURVE EMS CURVE
The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.
PX4 METAL – RUBBER-FITTED
TECHNICAL DATA Height . . . . . . . . . . . . . . . . . . . . . . . . . .429 mm (16.9”) Width. . . . . . . . . . . . . . . . . . . . . . . . . . .368 mm (14.5”) Depth. . . . . . . . . . . . . . . . . . . . . . . . . . .320 mm (12.6”) Ship Weight . . . . . . . . . . . . Aluminum 21 kg (46 lbs.) 316 Stainless Steel 28 kg (62 lbs.) Cast Iron 30 kg (66 lbs.) Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”) Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”) Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . .32 mm (1-1/4”) Suction Lift . . . . . . . . . . . . . . . . . . . . .6.9 m Dry (22.7’) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 m Wet (30.6’) Disp. Per Stroke. . . . . . . . . . . . . . . . 1.02 l (0.27 gal.)1 Max. Flow Rate . . . . . . . . . . . . . . . .327 lpm (87 gpm) Max. Size Solids . . . . . . . . . . . . . . . . . 4.8 mm (3/16”) 1Displacement per stroke was calculated at
4.8 bar (70 psig) air inlet pressure against a 2 bar (30 psig)head pressure. . . . . . . . . . . . . . . . . . . .
The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow. The EMS curve allows the pump user to deter- mine flow and air consumption at each EMS setting. For any EMS setting and discharge pressure, the “X factor” is used as a multi- plier with the original values from the setting 4 performance curve to calculate the actual flow and air consumption values for that spe- cific EMS setting. Note: you can interpolate between the setting curves for operation at intermediate EMS settings.
EXAMPLE A PX4 metal, Rubber-fitted pump operating at EMS setting 4, achieved a flow rate of 178 lpm (47 gpm) using 82 Nm3/h (48 scfm)
of air when run at 5.5 bar (80 psig) air inlet pressure and 3.4 bar (50 psig) discharge pressure (See dot on performance curve). The end user did not require that much flow and wanted to reduce air consumption at his facility. He determined that EMS setting 2 would meet his needs. At 3.4 bar (50 psig) discharge pressure and EMS setting 2, the flow “X factor” is 0.70 and the air “X factor” is 0.58 (see dots on EMS curve). Multiplying the original setting 4 values by the “X factors” provides the setting 2 flow rate of 125 lpm (33 gpm) and an air consumption of 47 Nm3/h (28 scfm). The flow rate was reduced by 30% while
the air consumption was reduced by 42%, thus providing increased efficiency. 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.

PX4 Performance 17 WILDEN PUMP & ENGINEERING, LLC
PERFORMANCE
SETTING 4 PERFORMANCE CURVE EMS CURVE
The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.
PX4 METAL – TPE-FITTED
EXAMPLE A PX4 metal, TPE-fitted pump operating at EMS setting 4, achieved a flow rate of 227 lpm (60 gpm) using 90 Nm3/h (53 scfm) of air when
run at 4.6 bar (67 psig) air inlet pressure and 2.1 bar (30 psig) dis- charge pressure (See dot on performance curve). The end user did not require that much flow and wanted to reduce air consumption at his facility. He determined that EMS setting 1 would meet his needs. At 2.1 bar (30 psig) discharge pressure and EMS setting 1, the flow “X factor” is 0.38 and the air “X factor” is 0.23 (see dots on EMS curve). Multiplying the original setting 4 values by the “X factors” provides the setting 1 flow rate of 86 lpm (23 gpm) and an air consumption of 21 Nm3/h (12 scfm). The flow rate was reduced by 62% while
the air consumption was reduced by 77%, thus providing increased efficiency. 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.
The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow. The EMS curve allows the pump user to deter- mine flow and air consumption at each EMS setting. For any EMS setting and discharge pressure, the “X factor” is used as a multi- plier with the original values from the setting 4 performance curve to calculate the actual flow and air consumption values for that spe- cific EMS setting. Note: you can interpolate between the setting curves for operation at intermediate EMS settings.
TECHNICAL DATA Height . . . . . . . . . . . . . . . . . . . . . . . . . .429 mm (16.9”) Width. . . . . . . . . . . . . . . . . . . . . . . . . . .368 mm (14.5”) Depth. . . . . . . . . . . . . . . . . . . . . . . . . . .320 mm (12.6”) Ship Weight . . . . . . . . . . . . Aluminum 21 kg (46 lbs.) 316 Stainless Steel 28 kg (62 lbs.) Cast Iron 30 kg (66 lbs.) Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”) Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”) Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . .32 mm (1-1/4”) Suction Lift . . . . . . . . . . . . . . . . . . . . .6.0 m Dry (19.7’) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 m Wet (30.6’) Disp. Per Stroke. . . . . . . . . . . . . . . . 1.10 l (0.29 gal.)1 Max. Flow Rate . . . . . . . . . . . . . . . .347 lpm (92 gpm) Max. Size Solids . . . . . . . . . . . . . . . . . 4.8 mm (3/16”) 1Displacement per stroke was calculated at 4.8
bar (70 psig) air inlet pressure against a 2 bar (30 psig)head pressure.

WILDEN PUMP & ENGINEERING, LLC 18 PX4 Performance
PERFORMANCE
The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.
SETTING 4 PERFORMANCE CURVE EMS CURVE
PX4 METAL – REDUCED STROKE PTFE-FITTED
TECHNICAL DATA Height . . . . . . . . . . . . . . . . . . . . . . . . . .429 mm (16.9”) Width. . . . . . . . . . . . . . . . . . . . . . . . . . .368 mm (14.5”) Depth. . . . . . . . . . . . . . . . . . . . . . . . . . .320 mm (12.6”) Ship Weight . . . . . . . . . . . . Aluminum 21 kg (46 lbs.) 316 Stainless Steel 28 kg (62 lbs.) Cast Iron 30 kg (66 lbs.) Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”) Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”) Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . .32 mm (1-1/4”) Suction Lift . . . . . . . . . . . . . . . . . . . . .4.0 m Dry (13.1’) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 m Wet (30.1’) Disp. Per Stroke. . . . . . . . . . . . . . . . 0.53 l (0.14 gal.)1 Max. Flow Rate . . . . . . . . . . . . . . . .327 lpm (87 gpm) Max. Size Solids . . . . . . . . . . . . . . . . . 4.8 mm (3/16”) 1Displacement per stroke was calculated at 4.8
bar (70 psig) air inlet pressure against a 2 bar (30 psig)head pressure.
The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow. The EMS curve allows the pump user to deter- mine flow and air consumption at each EMS setting. For any EMS setting and discharge pressure, the “X factor” is used as a multi- plier with the original values from the setting 4 performance curve to calculate the actual flow and air consumption values for that spe- cific EMS setting. Note: you can interpolate between the setting curves for operation at intermediate EMS settings.
EXAMPLE A PX4 metal, reduced stroke PTFE-fitted pump operating at EMS setting 4, achieved a flow rate of 170 lpm (45 gpm) using 85 Nm3/h
(50 scfm) of air when run at 3.6 bar (52 psig) air inlet pressure and 2.1 bar (30 psig) discharge pressure (See dot on performance curve). The end user did not require that much flow and wanted to reduce air consumption at his facility. He determined that EMS setting 3 would meet his needs. At 2.1 bar (30 psig) discharge pressure and EMS setting 3, the flow “X factor” is 0.88 and the air “X factor” is 0.76 (see dots on EMS curve). Multiplying the original setting 4 values by the “X factors” provides the setting 3 flow rate of 150 lpm (40 gpm) and an air consumption of 65 Nm3/h (38 scfm). The flow rate was reduced by 12% while
the air consumption was reduced by 24%, thus providing increased efficiency. 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.