Dover Wilden PRO-FLO Series Instruction Manual

Where Innovation Flows
www.wildenpump.com
P8/PX8
Original™Series
Metal Pump
EOM
Engineering
Operation &
Maintenance
W I L-1 0 3 2 0 - E - 0 8
REPLACES W I L-10 32 0 - E - 0 7
WIL-10320-E

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. P8 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. PX8 Performance
Operating Principle ..................................................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 ASSEMBLY / DISASSEMBLY ...........................................26
SECTION 8 EXPLODED VIEW & PARTS LISTING
P8 Metal
Full-Stroke Diaphragm-Fitted ..........................................34
Reduced-Stroke Diaphragm-Fitted......................................36
P8 Metal Saniflo™ 1935/2004/EC .......................................38
PX8 Metal
Full-Stroke Diaphragm-Fitted ..........................................40
Reduced-Stroke Diaphragm-Fitted......................................42
P8X Metal Saniflo™ 1935/2004/EC ......................................44
SECTION 9 ELASTOMER OPTIONS.................................................47

WIL-10320-E-08 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 adjuster 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 lubrication will reduce pump performance.
Pump is pre-lubed.
TEMPERATURE LIMITS:
Polypropylene 0°C to 79°C 32°F to 175°F
PVDF –12°C to 107°C 10°F to 225°F
PFA 7°C to 107°C 20°F to 225°F
Neoprene –18°C to 93°C 0°F to 200°F
Buna-N –12°C to 82°C 10°F to 180°F
EPDM –51°C to 138°C –60°F to 280°F
Viton®FKM –40°C to 177°C –40°F to 350°F
Wil-Flex™ –40°C to 107°C –40°F to 225°F
Saniflex™ –29°C to 104°C –20°F to 220°F
Polyurethane –12°C to 66°C 10°F to 150°F
Polytetrafluoroethylene (PTFE)
14°C to 104°C 40°F to 220°F
Nylon –18°C to 93°C 0°F to 200°F
Acetal –29°C to 82°C –20°F to 180°F
SIPD PTFE with Neoprene-backed 4°C to 104°C 40°F to 220°F
SIPD PTFE with EPDM-backed –10°C to 137°C 14°F to 280°F
Polyethylene 0°C to 70°C 32°F to 158°F
Geolast®–40°C to 82°C –40°F to 180°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 177°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: Prevent 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.
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 submersible and non-submersible 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.
1
4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only.
REV 5/1/06 QH
Section 1
CAUTIONS—READ FIRST!

WILDEN PUMP & ENGINEERING, LLC 2 WIL-10320-E-08
Section 2
WILDEN PUMP DESIGNATION SYSTEM
P8/PX8 METAL
51 mm (2") Pump
Maximum Flow Rate:
675 lpm (178 gpm)
LEGEND
PX8 / 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)
NOTE: MOST ELASTOMERIC MATERIALS USE COLORED DOTS FOR IDENTIFICATION.
NOTE: Not all models are available with all material options.
Viton®are registered trademarks of DuPont Dow Elastomers.
Halar®is a registered trademark of Solvay.
REV 5/5/05 WSA
SPECIALTY CODES
MATERIAL CODES
0014 BSP
0023 Wing nuts
0030 Screen based
0036 Screen based, BSP
0039 Screen based, polyurethane screen
0044 Stallion, balls & seats ONLY
0047 Stallion externals, balls and seats
0070 Saniflo™ FDA
0075 Saniflo™ FDA, Stallion balls and seats ONLY
0079 Tri-clamp fittings, wing nuts
0080 Tri-clamp fittings ONLY
0100 Wil-Gard 110V
0102 Wil-Gard, sensor wires ONLY
0103 Wil-Gard 220V
0108 Wil-Gard 220V, BSP
0118 Stallion balls and seats ONLY, BSP
0120 Saniflo™ FDA, Wil-Gard 110V
0330 Wing nuts, BSP
0320 Single-Point Exhaust center block
0324 Single-Point Exhaust center block, screen base
0327 Single-Point Exhaust center block,
Stallion externals, balls & seats
0070E Saniflo™ FDA (1935/2004/EC)
0075E Saniflo™ FDA, Stallion balls and seats ONLY (1935/2004/EC)
0120E Saniflo™ FDA, Wil-Gard II™ 110V (1935/2004/EC)
MODEL
P8 = PRO-FLO®
PX8 = PRO-FLO X™
XPX 8 = PRO-FLO X™ ATEX
WETTED PARTS & OUTER PISTON
AA = ALUMINUM / ALUMINUM
SS = STAINLESS STEEL /
STAINLESS STEEL
WW = CAST IRON / CAST IRON
AIR CHAMBERS
A = ALUMINUM
C = PTFE-COATED
N = NICKEL-PLATED
S = STAINLESS STEEL
V = HALAR®-COATED
ALUMINUM (P8 only)
CENTER BLOCK
A = ALUMINUM (PX8 only)
N = NICKEL-PLATED (PX8 only)
P = POLYPROPYLENE
S = STAINLESS STEEL (PX8 only)
AIR VALVE
A = ALUMINUM (PX8 only)
N = NICKEL-PLATED (PX8 only)
P = POLYPROPYLENE
S = STAINLESS STEEL (PX8 only)
DIAPHRAGMS
XBS = CONDUCTIVE BUNA-N (Two
Red Dots)
BNS = BUNA-N (Red Dot)
FBS = SANITARY BUNA 1,3 (Two
Yellow Dots)
FES = SANITARY EPDM 1,3 (Two
Blue Dots)
FSS = SANIFLEX™
[Hytrel®(Cream)]
1,3
FWL = SANITARY WIL-FLEX™ IPD1,3
FWS = SANITARY WIL-FLEX™,
EZ-INSTALL [Santoprene®
(Two Orange Dots)] 1,3
EPS = EPDM (Blue Dot)
NES = NEOPRENE (Green Dot)
PUS = POLYURETHANE (Clear)
TEU = PTFE W/EPDM
1,2,3
BACK-UP (White)
TNU = PTFE W/NEOPRENE
BACK-UP (White)
TSU = PTFE W/SANIFLEX™ BACK-
UP (White) 1,2,3
BNU = BUNA-N, ULTRA-FLEX™
1,3
EPU = EPDM, ULTRA-FLEX™
1,3
NEU = NEOPRENE, ULTRA-FLEX™
VTU = VITON®, ULTRA-FLEX™
VTS = VITON®(White Dot)
WFS = WIL-FLEX™ [Santoprene®
(Orange Dot)]
TSS = FULL-STROKE PTFE
W/SANIFLEX™ BACK-UP 1,2,3
TWS = FULL-STROKE PTFE
W/WIL-FLEX™ BACK-UP
1,2,3
ZSS = SANIFLEX™ , EZ-INSTALL
1,3
VALVE BALL
BN = BUNA-N (Red Dot)
FS = SANIFLEX™ [Hytrel
®
(Cream)]
1,3
FW= SANITARY WIL-FLEX™
1,3
[Santoprene®(Two Orange
Dots)]
EP = EPDM (Blue Dot)
NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Clear)
TF = PTFE (White)
1,2,3
VT = VITON®(Silver
or White Dot)
WF= WIL-FLEX™
[Santoprene (Orange Dot)]
VALVE SEAT
A = ALUMINUM
BN = BUNA-N (Red Dot)
EP = EPDM (Blue Dot)
FS = SANIFLEX™ [Hytrel
®
(Cream)]
FW= SANITARY WIL-FLEX™
1,3
[Santoprene®(Two Orange
Dots)]
H = ALLOY C
M = MILD STEEL
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
1,2,3
NOTE:
1Meets Requirements of FDA CFR21.177
2Meets Requirements of USP Class VI
3Meets Requirements of 1935/2004/EC

WIL-10320-E-08 3 WILDEN PUMP & ENGINEERING, LLC
Section 3
HOW IT WORKS—PUMP
REV 05/05/05 WSA
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 removes 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 thelimit 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.
HOW IT WORKS—AIR DISTRIBUTION SYSTEM

WILDEN PUMP & ENGINEERING, LLC 4 WIL-10320-E-08
Section 4
DIMENSIONAL DRAWINGS
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A434 17.1
B64 2.5
C348 13.7
D625 24.6
E665 26.2
F76 3.0
G343 13.5
H345 13.6
J305 12.0
K254 10.0
L229 9.0
M254 10.0
N 15 0.6
P8 Metal
P8 Metal SanifloFDA
51 mm
(2") FNPT
LIQUID DISCHARGE
A
13 mm
(1/2") FNPT
AIR INLET
G - ALUM.
F - 316 S.S., C.I., ALLOY C
19 mm
(3/4") FNPT
AIR EXHAUST
ALUMINUM BASE SCREEN MODEL
51 mm
(2") FNPT
LIQUID INLET
C
D
E
J
H
U
T
LK
M
N
P
V
W
51 mm
(2") FNPT
LIQUID INLET
R
FOOTED BASE FOR STAINLESS
STEEL & ALLOY C MODELS 51 mm (2") FNPT
LIQUID INLET
S
X
B
64 mm (2-1/2" )
TRI-CLAMP
LIQUID INLET
13 mm
(1/2") FNPT
AIR INLET 19 mm
(3/4") FNPT
AIR EXHAUST
E
D
C
64 mm (2-1/2" )
TRI-CLAMP LIQUID
DISCHARGE
B
A
J
K
F
N
L M
G
F
H
F
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A404 15.9
B48 1.9
C356 14.0
D630 24.8
E668 26.3
F58 2.3
G61 2.4
H348 13.7
J343 13.5
K229 9.0
L254 10.0
M257 10.1
N312 12.3
P 15 0.6
R64 2.5
S51 2.0
T282 11.1
U71 2.8
V279 11.0
W386 15.2
X 15 DIA. 0.6 DIA.

WIL-10320-E-08 5 WILDEN PUMP & ENGINEERING, LLC
PX8 Metal SanifloFDA
DIMENSIONAL DRAWINGS
PX8 Metal
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A 404 15.9
B 48 1.9
C 345 13.6
D 630 24.8
E 668 26.3
F 58 2.3
G 64 2.5
H 351 13.8
J 48 1.9
K 348 13.7
L 559 22.0
M 315 12.4
N 257 10.1
P 231 9.1
R 257 10.1
S 15 0.6
T 64 2.5
U 51 2.0
V 284 11.2
W 58 2.3
X 279 11.0
Y 396 15.6
Z 15 DIA. 0.6 DIA.
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A 409 16.1
B 64 2.5
C 340 13.4
D 625 24.6
E 665 26.2
F 76 3.0
G 351 13.8
H 48 1.9
J 340 13.4
K 551 21.7
L 305 12.0
M 254 10.0
N 229 9.0
P 254 10.0
R 15 DIA. 0.6 DIA.

WILDEN PUMP & ENGINEERING, LLC 6 WIL-10320-E-08
Section 5A
PERFORMANCE
巴英尺 磅/平方英寸
出口压力
泵送水时的流量
耗气量
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's performance curve.
P8 METAL
RUBBER-FITTED
Height ................................ 668 mm (26.3”)
Width ................................. 404 mm (15.9”)
Depth ..................................343 mm (13.5”)
Ship Weight .........Aluminum 32 kg (70 lb)
316 Stainless Steel 51 kg (112 lb)
Cast Iron 47 kg (104 lb)
Alloy C 52 kg (114 lb)
Air Inlet...................................13 mm (1/2”)
Inlet............................................51 mm (2”)
Outlet.........................................51 mm (2”)
Suction Lift ..................... 6.9 m Dry (22.7’)
8.6 m Wet (28.4’)
Disp. per Stroke.................2.6 L (0.70 gal)1
Max. Flow Rate............623 lpm (165 gpm)
Max. Size Solids.................. 6.4 mm (1/4”)
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 386 lpm (102 gpm)
against a discharge head of 2.8 bar (40
psig) requires 5.5 bar (80 psig) and 137
Nm3/h (85 scfm) air consumption.
CAUTION: Do not exceed 8.6 bar (125
psig) air supply pressure.
P8 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's performance curve.
Height ................................ 668 mm (26.3”)
Width ................................. 404 mm (15.9”)
Depth ..................................343 mm (13.5”)
Ship Weight .........Aluminum 32 kg (70 lb)
316 Stainless Steel 51 kg (112 lb)
Cast Iron 47 kg (104 lb)
Alloy C 52 kg (114 lb)
Air Inlet...................................13 mm (1/2”)
Inlet............................................51 mm (2”)
Outlet.........................................51 mm (2”)
Suction Lift ...................... 6.7 m Dry (22.1’)
8.6 m Wet (28.4’)
Disp. per Stroke.................2.8 L (0.75 gal)1
Max. Flow Rate............630 lpm (166 gpm)
Max. Size Solids.................. 6.4 mm (1/4”)
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 227 lpm (60 gpm)
against a discharge head of 3.4 bar (50
psig) requires 4.1 bar (60 psig) and 66
Nm3/h (41 scfm) air consumption.
CAUTION: Do not exceed 8.6 bar (125
psig) air supply pressure.

WIL-10320-E-08 7 WILDEN PUMP & ENGINEERING, LLC
PERFORMANCE
P8 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's performance curve.
P8 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's performance curve.
Height .................................668 mm (26.3")
Width ..................................404 mm (15.9")
Depth .................................. 348 mm (13.7")
Ship Weight .........Aluminum 32 kg (70 lb)
316 Stainless Steel 51 kg (112 lb)
Cast Iron 47 kg (104 lb)
Alloy C 52 kg (114 lb)
Air Inlet................................... 13 mm (1⁄2")
Inlet............................................ 51 mm (2")
Outlet......................................... 51 mm (2")
Suction Lift ......................4.6 m Dry (15.0')
9.5 m Wet (31.0')
Disp. per Stroke...............1.67 L (0.44 gal)1
Max. Flow Rate............496 lpm (131 gpm)
Max. Size Solids...................6.4 mm (1/4")
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 238 lpm (63 gpm)
against a discharge pressure head of
2.1 bar (30 psig) requires 4.1 bar (60 psig)
and 94 Nm3/h (55 scfm) air consumption.
CAUTION: Do not exceed 8.6 bar (125
psig) air supply pressure.
Height ................................ 668 mm (26.3”)
Width ................................. 404 mm (15.9”)
Depth ..................................348 mm (13.7”)
Ship Weight ........Aluminum 32 kg (70 lb)
316 Stainless Steel 51 kg (112 lb)
Cast Iron 47 kg (104 lb)
Alloy C 52 kg (114 lb)
Air Inlet...................................13 mm (1/2”)
Inlet............................................51 mm (2”)
Outlet.........................................51 mm (2”)
Suction Lift ...................... 6.7 m Dry (22.1’)
9.0 m Wet (29.5’)
Disp. per Stroke.................2.6 L (0.70 gal)1
Max. Flow Rate............ 618 lpm (163 gpm)
Max. Size Solids.................. 6.4 mm (1/4”)
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 280 lpm (74 gpm)
against a discharge head of 2.8 bar (40
psig) requires 4.1 bar (60 psig) and 87
Nm3/h (54 scfm) air consumption.
CAUTION: Do not exceed 8.6 bar (125
psig) air supply pressure.

WILDEN PUMP & ENGINEERING, LLC 8 WIL-10320-E-08
Section 5A
PERFORMANCE
P8 METAL
ULTRA-FLEX™-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's performance curve.
Height .................................669 mm (26.3")
Width ..................................404 mm (15.9")
Depth ..................................343 mm (13.5")
Ship Weight .........Aluminum 32 kg (70 lb)
316 Stainless Steel 51 kg (112 lb)
Cast Iron 47 kg (104 lb)
Alloy C 52 kg (114 lb)
Air Inlet................................... 13 mm (1/2")
Inlet............................................ 51 mm (2")
Outlet......................................... 51 mm (2")
Suction Lift ......................4.9 m Dry (16.0')
8.8 m Wet (29.0')
Disp. per Stroke............... 2.12 L (0.56 gal)1
Max. Flow Rate............526 lpm (139 gpm)
Max. Size Solids...................6.4 mm (1/4")
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 201 lpm (53 gpm)
against a discharge pressure head of
2.1 bar (30 psig) requires 4.1 bar (60 psig)
and 60 Nm3/h (35 scfm) air consumption.
CAUTION: Do not exceed 8.6 bar (125
psig) air supply pressure.

WIL-10320-E-08 9 WILDEN PUMP & ENGINEERING, LLC
P8 METAL SUCTION-
LIFT CAPABILITY
Section 5C
SUCTION-LIFT CURVES
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 that 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 5A
NOTES

PX8
M E T A L
PX8 PERFORMANCE

Pro-Flo XTM Operating Principle
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.
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
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.
$
$
$
AIR CONSUMPTION
WILDEN PUMP & ENGINEERING, LLC 12 PX8 Performance

HOW TO USE THIS EMS CURVE
PX8 Performance 13 WILDEN PUMP & ENGINEERING, LLC
SETTING 4 PERFORMANCE CURVE EMS CURVE
巴英尺 磅/平方英寸
出口压力
泵送水时的流量
耗气量
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 PX8 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 system's 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
precise results you can mathematically inter-
polate 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
PX8 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 plot-
ted on the EMS curve along the horizontal
line representing your discharge pressure (in
this case, 40 psig). This air point is different
than the flow point plotted in example 2.1. Af-
ter estimating (or interpolating) this point on
the curve, draw a vertical line downward un-
til 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

PERFORMANCE
WILDEN PUMP & ENGINEERING, LLC 16 PX8 Metal Performance
SETTING 4 PERFORMANCE CURVE EMS CURVE
60[102]
80[136]
100[170]
20 40 60 80 100 120 140 160 180
[76] [151] [227] [303] [379] [454] [530] [606] [681]
40[68]
20[34]
PX8 METAL TPE-FITTED
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.
PX8 METAL RUBBER-FITTED
TECHNICAL DATA Height .......................... 668 mm (26.3”)
Width........................... 404 mm (15.9”) Depth........................... 340 mm (13.4”) Ship Weight .............. Aluminum 35 kg (78 lb)
316 Stainless Steel 53 kg (117 lb) Cast Iron 49 kg (109 lb) Alloy C 54 kg (119 lb) Air Inlet ........................... 19 mm (3/4”)
Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)
Outlet...............................51 mm (2”) Suction Lift ..................... 7.1 m Dry (23.3’)
8.6 m Wet (28.4’) Disp. per Stroke.................. 2.7 L (0.72 gal)1 Max. Flow Rate ................667 lpm (176 gpm) Max. Size Solids ...................6.4 mm (1/4”) 1Displacement per stroke was calculated at 4.8 bar (70 psig)
air inlet pressure against a 2.1 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 multiplier with the original values from the setting 4 per- formance curve to calculate the actual flow and air consumption values for that specific EMS setting. NOTE: You can interpolate be- tween the setting curves for operation at in- termediate EMS settings.
EXAMPLE A PX8 metal, rubber-fitted pump operating at EMS setting 4, achieved a flow rate of 416 lpm (110 gpm) using 102 Nm3/h (60 scfm)
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 flow 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 flow X factor is 0.65 and the air X factor is 0.48 (see dots on EMS curve). Multiplying the original setting 4 values by the X factors provides the setting 2 flow rate of 271 lpm (72 gpm) and an air consumption of 49 Nm3/h (29 scfm). The flow rate was reduced by 35% while
the air consumption was reduced by 52%, 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.

PERFORMANCE
PX8 Metal Performance 17 WILDEN PUMP & ENGINEERING, LLC
SETTING 4 PERFORMANCE CURVE EMS CURVE
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
60[102]
80[136]
100[170]
20 40 60 80 100 120 140 160 180
[76] [151] [227] [303] [379] [454] [530] [606] [681]
40[68]
20[34]
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.
PX8 METAL TPE-FITTED
EXAMPLE A PX8 metal, TPE-fitted pump operating at EMS setting 4, achieved a flow rate of 197 lpm (52 gpm) using 59 Nm3/h (35 scfm) of air
when run at 4.1 bar (60 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 0.63 and the air X factor is 0.48 (see dots on EMS curve). Multiplying the original setting 4 values the X factors provides the setting 2 flow rate of 124 lpm (33 gpm) and an air consumption of 29 Nm3/h (17 scfm). The flow rate was reduced by 37% while the
air consumption was reduced by 52%, 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 multiplier with the original values from the setting 4 per- formance curve to calculate the actual flow and air consumption values for that specific EMS setting. NOTE: You can interpolate be- tween the setting curves for operation at in- termediate EMS settings.
TECHNICAL DATA Height .......................... 668 mm (26.3”)
Width........................... 404 mm (15.9”) Depth........................... 340 mm (13.4”) Ship Weight .............. Aluminum 35 kg (78 lb)
316 Stainless Steel 53 kg (117 lb) Cast Iron 49 kg (109 lb) Alloy C 54 kg (119 lb) Air Inlet ........................... 19 mm (3/4”)
Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)
Outlet...............................51 mm (2”) Suction Lift ..................... 6.7 m Dry (22.1’)
8.6 m Wet (28.4’) Disp. per Stroke.................. 2.7 L (0.72 gal)1 Max. Flow Rate ................675 lpm (178 gpm) Max. Size Solids ...................6.4 mm (1/4”) 1Displacement per stroke was calculated at 4.8 bar (70 psig)
air inlet pressure against a 2.1 bar (30 psig) head pressure.

PERFORMANCE
WILDEN PUMP & ENGINEERING, LLC 18 PX8 Metal 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
60[102]
80[136]
100[170]
20 40 60 80 100 120 140 160 180
[76] [151] [227] [303] [379] [454] [530] [606] [681]
40 [68]
20[34]
PX8 METAL REDUCED-STROKE PTFE-FITTED
TECHNICAL DATA Height ..........................668 mm (26.3”)
Width...........................404 mm (15.9”) Depth...........................340 mm (13.4”) Ship Weight ..............Aluminum 35 kg (78 lb)
316 Stainless Steel 53 kg (117 lb) Cast Iron 49 kg (109 lb) Alloy C 54 kg (119 lb) Air Inlet .......................... 19 mm (3/4”)
Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”) Outlet..............................51 mm (2”)
Suction Lift .....................4.5 m Dry (14.8’)
8.7 m Wet (28.4’) Disp. per Stroke................. 1.9 L (0.51 gal)1
Max. Flow Rate ...............617 lpm (163 gpm) Max. Size Solids ..................6.4 mm (1/4”) 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 multiplier with the original values from the setting 4 per- formance curve to calculate the actual flow and air consumption values for that specific EMS setting. NOTE: You can interpolate be- tween the setting curves for operation at in- termediate EMS settings.
EXAMPLE A PX8 metal, reduced-stroke PTFE-fitted pump operating at EMS setting 4, achieved a flow rate of 401 lpm (106 gpm) using 133 Nm3/h
(78 scfm) of air when run at 4.8 bar (70 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 flow and wanted to reduce air consumption at his facility. He determined that EMS setting 3 would meet his needs. At 1.4 bar (20 psig) discharge pressure and EMS setting 3, the flow X factor is 0.82 and the air X factor is 0.70 (see dots on EMS curve). Multiplying the original setting 4 values by the X factors provides the setting 3 flow rate of 329 lpm (87 gpm) and an air consumption of 93 Nm3/h (55 scfm). The flow rate was reduced by 18% while the
air consumption was reduced by 30%, thus providing increased ef- ficiency. 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.