Dover WILDEN TURBOFLO T8 Instruction Manual

EOM-T8&A8P 2/00
REPLACES EOM-T8&A8P 4/99
motralec
4 rue Lavoisier . ZA Lavoisier . 95223 HERBLAY CEDEX
Tel. : [phone] / Fax. : [phone]
Demande de prix / e-mail : [email protected]
www.motralec.com

WILDEN PUMP & ENGINEERING CO.
TABLE OF CONTENTS
PAGE #
SECTION #1 — PUMP DESIGNATION SYSTEM...................................... 1
SECTION #2 —HOW IT WORKS (PUMP & AIR SYSTEMS) ......... 2
SECTION #3 —CAUTIONS......................................................................................... 3
SECTION #4 —DIMENSIONAL DRAWINGS
A. Model T8 PLASTIC Air-Controlled...................................................................................... 4
B. Model A8 PLASTIC Accu-Flo™.......................................................................................... 4
SECTION #5 —PERFORMANCE CURVES
A. Model T8 PLASTIC Rubber-Fitted...................................................................................... 5
B. Model T8 PLASTIC Ultra-Flex™-Fitted.............................................................................. 5
C. Model T8 PLASTIC TPE-Fitted........................................................................................... 6
D. Model T8 PLASTIC Teflon®-Fitted....................................................................................... 6
E. Model A8 PLASTIC Accu-Flo™Rubber/TPE-Fitted........................................................... 7
F. Model A8 PLASTIC Accu-Flo™Rubber/TPE-Fitted 70/30 Operating Condition................ 7
G. Model A8 PLASTIC Accu-Flo™Ultra-Flex™/Teflon®-Fitted................................................ 8
H. Model A8 PLASTIC Accu-Flo™Ultra-Flex™/Teflon®-Fitted 70/30 Operating Condition.... 8
SECTION #6 —SUCTION LIFT CURVES & DATA
A. Model T8 PLASTIC Air-Controlled...................................................................................... 9
B. Model A8 PLASTIC Accu-Flo™.......................................................................................... 9
SECTION #7 —INSTALLATION & OPERATION
A. Installation —Air-Controlled Pumps................................................................................... 10
B. Air-Controlled Operation and Maintenance........................................................................ 11
C. Accu-Flo™Operating Principles ........................................................................................ 12
D. Installation —Accu-Flo™Pumps....................................................................................... 12
E. Accu-Flo™Operation and Maintenance ............................................................................ 13
F. Troubleshooting Air-Operated Pumps ................................................................................ 14
G. Troubleshooting Accu-Flo™Pumps................................................................................... 14
SECTION #8 —DIRECTIONS FOR DISASSEMBLY/REASSEMBLY
A. Model T8 PLASTIC Wetted Path —Tools Required, Torque Specs, Cautions.................. 15
B. Turbo-Flo™Air Valve —Disassembly, Cleaning, Inspection ............................................ 18
C. Reassembly Hints & Tips.................................................................................................... 20
D. Gasket Kit Installation......................................................................................................... 21
SECTION #9 —EXPLODED VIEW/PARTS LISTING
A. Model T8 PLASTIC Rubber/TPE-Fitted.............................................................................. 22
B. Model T8 PLASTIC Teflon®-Fitted....................................................................................... 24
C. Model A8 PLASTIC Accu-Flo™.......................................................................................... 26
SECTION #10 —REFERENCE
A. Elastomer Options.............................................................................................................. 28
B. Accu-Flo™Electrical Information ....................................................................................... 28
C
l
a
s
s
I
&
I
I
O
z
o
n
e
D
e
p
l
e
t
i
n
g
S
u
b
s
t
a
n
c
e
s
NON
USE
U.S. Clean Air Act
Amendments of 1990

1WILDEN PUMP & ENGINEERING CO.
MODEL T8 OR A8 PLASTIC
MATERIAL CODES
O-RINGS
VALVE SEAT
VALVE BALLS
DIAPHRAGMS
AIR VALVE
CENTER BLOCK OR CENTER SECTION
AIR CHAMBERS OR CENTER SECTION
WETTED PARTS
SPECIALTY
CODE
(IF APPLICABLE)
MODEL
T or A8 / XXXX / XX / XX / XXX / (xxx)
SECTION 1
WILDEN PUMP DESIGNATION SYSTEM
WETTED PARTS
K = KYNAR/PVDF
P = POLYPROPYLENE
DIAPHRAGMS
BN = BUNA-N®(Red Dot)
FG = SANIFLEX™
ND = NORDEL®(Blue)
NE = NEOPRENE (Green)
PU = POLYURETHANE
TF = TEFLON®PTFE
VT = VITON®
WF = WIL-FLEX™ (Orange)
DIAPHRAGMS (ULTRA-FLEX™)
UN = NEOPRENE (Green)
UE = NORDEL®(Blue)
UB = BUNA-N®(Red)
UV = VITON®(Silver)
VALVE BALL
BN = BUNA-N®(Red Dot)
FG = SANIFLEX™
FV = FOOD GRADE VITON®
ND = NORDEL®(Blue)
NE = NEOPRENE (Green)
PU = POLYURETHANE
TF = TEFLON®PTFE (White)
VT = VITON®(Silver or White Dot)
WF = WIL-FLEX™(Orange)
VALVE SEAT O-RING
BN = BUNA-N®
PU = POLYURETHANE
TV = TEFLON®ENCAP. VITON®
VALVE SEAT
K = KYNAR/PVDF
P = POLYPROPYLENE
CENTER BLOCK
A = ALUMINUM
N = NICKEL-PLATED
P = POLYPROPYLENE
S = STAINLESS STEEL
AIR VALVE
A = ALUMINUM (Accu-Flo™only)
B = BRASS
C = TEFLON®-COATED
D = BRASS W/OIL BOTTLE
N = NICKEL-PLATED
S = STAINLESS STEEL
AIR CHAMBERS
A = ALUMINUM
C = TEFLON®-COATED
N = NICKEL-PLATED
S = STAINLESS STEEL
W = CAST IRON
NOTE: ELASTOMERIC MATERIALS USE COLORED DOTS FOR IDENTIFICATION.
Buna-N, Nordel and Viton are registered trademarks of DuPont Dow Elastomers.
Teflon is a registered trademark of DuPont.
*O-RINGS NOT REQUIRED.

2
WILDEN PUMP & ENGINEERING CO.
SECTION 2
THE WILDEN PUMP — HOW IT WORKS
The Wilden diaphragm pump is an air-operated, positive displacement, self-priming pump. These drawings show the 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 pres-
surized air to the back side of diaphragm
A. The compressed air is applied directly
to the liquid column separated by elas-
tomeric 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 block 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 the atmosphere through the
exhaust port of the pump. The move-
ment of diaphragm B toward the center
block 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 block while pulling diaphragm Ato
the center block. 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 block of
the pump creates a vacuum within liquid
chamber A. Atmospheric 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.
RIGHT STROKE MID STROKE LEFT STROKE
OPEN
CLOSED
CLOSEDOPEN
INLET
AIR SUPPLY
OUTLET
A
B
OPEN
OPEN
CLOSED
INLET
AIR SUPPLY
OUTLET
CLOSED
A
B
➤
➤
OPEN
CLOSED
CLOSED
OPEN
INLET
AIR SUPPLY
OUTLET
A
B

3WILDEN PUMP & ENGINEERING CO.
SECTION 3
WILDEN MODEL T8 PLASTIC
CAUTIONS –READ FIRST!
TEMPERATURE LIMITS:
Polypropylene 0°C to 79°C32°F to 175°F
PVDF –12°C to 107°C10°F to 225°F
Neoprene –17.8°C to 93.3°C0°F to 200°F
Buna-N®–12.2°C to 82.2°C10°F to 180°F
Nordel®–51.1°C to 137.8°C–60°F to 280°F
Viton®–40°C to 176.7°C–40°F to 350°F
Wil-Flex™–40°C to 107.2°C–40°F to 225°F
Polyurethane 12.2°C to 65.6°C10°F to 150°F
Saniflex™–28.9°C to 104.4°C–20°F to 220°F
Teflon®PTFE 4.4°C to 104.4°C40°F to 220°F
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 engineering guide for chemical compatibility and
temperature limits.
CAUTION: Always wear safety glasses when operating
pump. If diaphragm rupture occurs, material being
pumped may be forced out air exhaust.
WARNING: Prevention of static sparking —If static
sparking occurs, fire or explosion could result. Pump,
valves, and containers must be properly grounded 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: 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 pipe line debris is
clear. Use an in-line air filter. A 5µ(micron) air filter is
recommended.
NOTE: When installing Teflon®diaphragms, it is impor-
tant to tighten outer pistons simultaneously (turning in
opposite directions) to ensure tight fit.
NOTE: Tighten clamp bands and retainers prior to instal-
lation. Fittings may loosen during transportation.
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: Verify the chemical compatibility of the
process and cleaning fluid to the pump’s component mate-
rials in the Chemical Resistance Guide (see E4).
NOTE: “Champ”series pumps are made of virgin plastic
and are not UV stabilized. Direct sunlight for prolonged
periods can cause deterioration of plastics.
CAUTION: When removing the end cap using
compressed air, the air valve end cap may come out with
considerable force. Hand protection such as a padded
glove or rag should be used to capture the end cap.
CAUTION: Only explosion proof (NEMA 7) solenoid
valves should be used in areas where explosion proof
equipment is required.
NOTE: Non lube-free pumps must be lubricated. Wilden
suggests an arctic ISO grade 15 (5 weight oil). Do not
over-lubricate air supply. Over-lubrication will reduce
pump performance.

4
WILDEN PUMP & ENGINEERING CO.
SECTION 4A
DIMENSIONAL DRAWING
WILDEN MODEL T8 PLASTIC CHAMP
S
A
B
C
D
E
M
L
K
J
N
PR
G
F
H
C
L
AIR INLET
AIR EXHAUST
FLANGE
150 POUND CLASS
19.0 mm (3/4") FNPT
19.0 mm (3/4") FNPT
50.8 mm (2") I.D.
DIMENSIONS –T8 CHAMP (PLASTIC)
ITEM METRIC (mm) STANDARD (inch)
A 491.4 19 11/32
B 77.0 3 1/32
C 693.0 27 9/32
D 770.0 30 5/16
E 455.6 17 7/16
F 88.9 3 1/2
G 344.5 13 9/16
H 332.6 13 3/32
J 386.6 15 7/32
K 306.4 12 1/16
L 228.6 9
M 254.0 10
N 14.3 9/16
METRIC (mm) STANDARD (inch)
P 60.3 RAD 2 3/8 RAD.
R 76.2 RAD. 3 1/32 RAD.
S 19.8 DIA 25/32 DIA..
Tee section is designed to accommodate both
standard and metric pipe connections.
SECTION 4B
DIMENSIONAL DRAWING
WILDEN MODEL A8 PLASTIC ACCU-FLO™
0 1
A
1/2"FNPT
AIR EXHAUST
FLANGE
AIR INLET
B
C
D
E
F
G
H
J
K
L
M
N
P
RS
T
19.0 mm (3/4") FNPT
19.0 mm
(3/4") FNPT
DIMENSIONS –A8 ACCU-FLO™(PLASTIC)
ITEM METRIC (mm) STANDARD (inch)
A 491.4 19 11/32
B 77.0 3 1/32
C 409.6 16 1/8
D 693.0 27 9/32
E 770.0 30 5/16
F 88.9 3 1/2
G 344.5 13 9/16
H 332.6 13 3/32
J 86.5 3 3/32
K 386.6 15 7/32
L 306.4 12 1/16
M 228.6 9
N 254.0 10
P 14.3 9/16
METRIC (mm) STANDARD (inch)
R 60.3 RAD 2 3/8 RAD.
S 76.2 RAD. 3 1/32 RAD.
T 19.8 DIA. 25/32 DIA.
Tee section is designed to accommodate both
standard and metric pipe connections.

5WILDEN PUMP & ENGINEERING CO.
SECTION 5A
PERFORMANCE CURVES
MODEL T8 PLASTIC RUBBER-FITTED
Height ..........................770.0 mm (305⁄16")
Width ...........................491.3 mm (1911⁄32")
Depth...................................254 mm (10")
Ship Weight....Polypropylene 35.4 kg. (77 lbs)
PVDF 44.6 kg (97 lbs.)
Air Inlet..................................1.91 cm (3⁄4")
Inlet........................................5.08 cm (2")
Outlet......................................5.08 cm(2")
Suction Lift.....................15.79 m Dry (9')
9.45 m Wet (31')
Displacement per
Stroke........................ 2.84 l (0.75gal.)1
Max. Flow Rate......579.17 lpm (153 gpm)
Max. Size Solids...................6.35 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.
Example: To pump 303 lpm (80 gpm)
against a discharge pressure head of 2 Bar
(30 psig) requires 4.1 Bar (60 psig) and 80
Nm3/h (47 scfm) air consumption. (See
dot on chart.)
Caution:Do not exceed 8.6 Bar1 (25 psig) air
supply pressure.
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.
AIR CONSUMPTION
(SCFM) [Nm
3
/h]
20 40 60 80 100 120 140 160
Water Discharge Flowrates
[76] [151] [227] [303] [378] [454] [530] [606]
PSIG
20
40
60
80
100
120
0
25
50
75
100
125
150
175
200
225
250
275
300
BAR
0
1
2
3
4
5
6
7
8
GPM
[l/min]
Discharge Pressure
(20) [34]
(40) [68]
(60) [102]
(80) [136]
(100) [170]
FEET
SECTION 5B
PERFORMANCE CURVES
MODEL T8 PLASTIC ULTRA-FLEX™-FITTED
Height ...........................770.0 mm (305⁄16")
Width ...........................491.3 mm (1911⁄32")
Depth...................................254 mm (10")
Ship Weight....Polypropylene 35.4 kg. (77 lbs)
PVDF 44.6 kg (97 lbs.)
Air Inlet..................................1.91 cm (3⁄4")
Inlet........................................5.08 cm (2")
Outlet.....................................5.08 cm (2")
Suction Lift.....................3.35 m Dry (11')
9.14 m Wet (30')
Displacement per
Stroke ...................... 1.74 l (0.46 gal.)1
Max. Flow Rate........556.5 lpm (147 gpm)
Max. Size Solids...................6.35 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.
Example: To pump 303 lpm (80 gpm)
against a discharge pressure head of 2 Bar
(30 psig) requires 4.1 Bar (60 psig) and 82
Nm3/h (48 scfm) air consumption. (See
dot on chart.)
Caution:Do not exceed 8.6 Bar (125 psig) air
supply pressure.
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.
AIR CONSUMPTION
(SCFM) [Nm
3
/h]
20 40 60 80 100 120 140 160
20
40
60
80
100
120
FEET
0
25
50
75
100
125
150
175
200
225
250
275
300
BAR
0
1
2
3
4
5
6
7
8(20)
[34] [68]
(60) [102]
(80) [136]
(100) [170]
GPM
[l/min] Water Discharge Flowrates
[76] [151] [227] [303] [378] [454] [530]
Discharge Pressure
[606]
PSIG
(40)

6
WILDEN PUMP & ENGINEERING CO.
SECTION 5C
PERFORMANCE CURVES
MODEL T8 PLASTIC TPE-FITTED
Height ...........................770.0 mm (305⁄16")
Width ...........................491.3 mm (1911⁄32")
Depth...................................254 mm (10")
Ship Weight....Polypropylene 35.4 kg (77 lbs.)
PVDF 44.6 kg (97 lbs.)
Air Inlet..................................1.91 cm (3⁄4")
Inlet.........................................5.08 cm (2)
Outlet.....................................5.08 cm (2")
Suction Lift.....................4.57 m Dry (15')
9.45 m Wet (31')
Displacement per
Stroke ...................... 2.91 l (0.77 gal.)1
Max. Flow Rate........590.5 lpm (156 gpm)
Max. Size Solids...................6.35 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.
Example: To pump 303 lpm (85 gpm)
against a discharge pressure head of 2 Bar
(30 psig) requires 4.1 Bar (60 psig) and 85
Nm3/h (50 scfm) air consumption. (See
dot on chart.)
Caution:Do not exceed 8.6 Bar (125 psig) air
supply pressure.
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.
(20) [34]
(40) [68]
(60) [102]
(80) [136]
(100) [170]
AIR CONSUMPTION
(SCFM) [Nm
3
/h]
20 40 60 80 100 120 140 160
PSIG
20
40
60
80
100
120
FEET
0
25
50
75
100
125
150
175
200
225
250
275
300
BAR
0
1
2
3
4
5
6
7
8
GPM
[lmin] Water Discharge Flowrates
[76] [151] [227] [303] [378] [454] [530]
Discharge Pressure
[606]
SECTION 5D
PERFORMANCE CURVES
MODEL T8 PLASTIC TEFLON®-FITTED
Height ...........................770.0 mm (305⁄16")
Width ...........................491.3 mm (1911⁄32")
Depth...................................254 mm (10")
Ship Weight....Polypropylene 35.4 kg (77 lbs.)
PVDF 44.6 kg (97 lbs.)
Air Inlet..................................1.91 cm (3⁄4")
Inlet........................................5.08 cm (2")
Outlet.....................................5.08 cm (2")
Suction Lift.....................3.05 m Dry (10')
9.45 m Wet (31')
Displacement per
Stroke ....................... 1.51 l (0.40 gal)1
Max. Flow Rate........458.0 lpm (121 gpm)
Max. Size Solids...................6.35 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.
Example: To pump 303 lpm (70 gpm)
against a discharge pressure head of 2 Bar
(30 psig) requires 4.1 Bar (60 psig) and
93.5 Nm3/h (55 scfm) air consumption.
(See dot on chart.)
Caution:Do not exceed 8.6 Bar1 (25 psig) air
supply pressure.
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.
AIR CONSUMPTION
(SCFM)
[Nm
3
/h]
20 40 60 80 100 120 140 160
PSIG
20
40
60
80
100
120
FEET
0
25
50
75
100
125
150
175
200
225
250
275
300
BAR
0
1
2
3
4
5
6
7
8(20)
[34]
(40) [68]
(60)
[102]
(80) [136]
(100) [170]
GPM
[l/min] Water Discharge Flowrates
[76] [151] [227] [303] [378] [454] [530]
Discharge Pressure
[606]

7WILDEN PUMP & ENGINEERING CO.
SECTION 5E
PERFORMANCE CURVES
MODEL A8 PLASTIC ACCU-FLO™
RUBBER/TPE-FITTED
Height ...........................770.0 mm (305⁄16")
Width ...........................491.3 mm (1911⁄32")
Depth...................................254 mm (10")
Ship Weight.Polypropylene 33.8 kg (74.6 lbs.)
PVDF 42.9 kg (94.6 lbs.)
Air Inlet..................................1.27 cm (1⁄2")
Inlet........................................5.08 cm (2")
Outlet.....................................5.08 cm (2")
Suction Lift.......................6.1 m Dry (20')
8.53 m Wet (28')
Displacement per
Stroke ...................... 0.55 gal. (2.08 l)1
Max. Flow Rate......420.18 lpm (111 gpm)
Max. Size Solids...................6.35 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.
Example: To pump 197 lpm (52 gpm)
against a discharge pressure head of 2.7
Bar (40 psig) requires 5.5 Bar (80 psig)
inlet air pressure, 68 Nm3/h (40 scfm) air
consumption and a pump speed of 108
strokes/minute. (See dot on chart.)
Caution:Do not exceed 8.6 Bar (125 psig) air
supply pressure.
Flow curves are for “optimal speed”conditions only. The “optimal speed”is that speed which
provides the maximum flow under a particular air and fluid pressure condition. The optimal
speed varies for different fluid and air pressures. Recommendations for optimal speed can be
found on the right side of the flow curve.
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.
Note: TPE suction lift is approximately half that of rubber-fitted.
AIR CONSUMPTION
(SCFM) [Nm
3
/h]
20 40 60 80 100 120 140 160
PSIG
20
40
60
80
100
120
FEET
0
25
50
75
100
125
150
175
200
225
250
275
300
BAR
0
1
2
3
4
5
6
7
8
Optimal Speed
0.4
0.5
0.6
0.7
0.8
0.9
(20) [34]
(40) [68]
(60) [102]
(80) [136]
GPM
[l/min] Water Discharge Flowrates
[76] [151] [227] [303] [378] [454] [530]
Discharge Pressure
[606]
Sec / Stroke
Interval
[150]
[120]
[100]
[86]
[75]
[67]
[SPM]
SECTION 5F
70/30 OPERATING CONDITION
MODEL A8 PLASTIC ACCU-FLO™
RUBBER/TPE-FITTED
A8 Plastic Accu-Flo™ Rubber / TPE-Fitted
@ 70 / 30 operating condition
Water Discharge Flowrate
10 20 30 40 50 60 70
Speed
0
20
40
60
80
100
120
140
160
180
200
220
GPM
[l/min] [114] [151] [189][38] [76] [227] [265]
SPM
This curve demonstrates the flow
created when the stroke rate is modi-
fied under a static air and fluid pres-
sure condition. This curve can be
applied to different pressure condi-
tions to estimate the change in flow
due to stroke rate.

8
WILDEN PUMP & ENGINEERING CO.
SECTION 5H
70/30 OPERATING CONDITION
MODEL A8 PLASTIC ACCU-FLO™
ULTRA-FLEX™-TEFLON®-FITTED
Water Discharge Flowrate
A8 Plastic Accu-Flo™Ultra-Flex™/Teflon®-Fitted
@ 70 / 30 operating condition
10 20 30 40 50 60 70
Speed
[114] [151] [189][38] [76] [227] [265]
0
20
40
60
80
100
120
140
160
180
200
220
GPM
[l/min]
SPM
SECTION 5G
PERFORMANCE CURVES
MODEL A8 PLASTIC ACCU-FLO™
ULTRA-FLEX™/TEFLON®-FITTED
Height ...........................770.0 mm (305⁄16")
Width ...........................491.3 mm (1911⁄32")
Depth...................................254 mm (10")
Ship Weight.Polypropylene 33.8 kg (74.6 lbs.)
PVDF 42.9 kg (94.6 lbs.)
Air Inlet..................................1.27 cm (1⁄2")
Inlet........................................5.08 cm (2")
Outlet.....................................5.08 cm (2")
Suction Lift.....................3.35 m Dry (11')
8.53 m Wet (28')
Displacement per
Stroke ...................... 1.74 l (0.46 gal.)1
Max. Flow Rate........386.1 lpm (102 gpm)
Max. Size Solids...................6.35 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.
Example: To pump 189 lpm (50 gpm)
against a discharge pressure head of 2.7
Bar (40 psig) requires 5.5 Bar (80 psig)
inlet air pressure, 85 Nm3/h (50 scfm) air
consumption and a pump speed of 120
strokes/minute. (See dot on chart.)
Caution:Do not exceed 8.6 Bar (125 psig) air
supply pressure.
Flow curves are for “optimal speed”conditions only. The “optimal speed”is that speed which
provides the maximum flow under a particular air and fluid pressure condition. The optimal
speed varies for different fluid and air pressures. Recommendations for optimal speed can be
found on the right side of the flow curve.
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.
20 40 60 80 100 120 140 160
PSIG
20
40
60
80
100
120
FEET
0
25
50
75
100
125
150
175
200
225
250
275
300
BAR
0
1
2
3
4
5
6
7
8
Optimal Speed
0.3
0.4
0.5
0.6
0.7
0.8
0.9
(20) [34]
(40) [68]
(60) [102]
(80) [136]
GPM
[l/min] Water Discharge Flowrates
[76] [151] [227] [303] [378] [454] [530]
Discharge Pressure
[606]
Sec / Stroke
Interval
[150]
[120]
[100]
[86]
[75]
[67]
[SPM]
[200]
This curve demonstrates the flow
created when the stroke rate is modi-
fied under a static air and fluid pres-
sure condition. This curve can be
applied to different pressure condi-
tions to estimate the change in flow
due to stroke rate.