5
WILDEN PUMP & ENGINEERING CO.
SECTION 5A
PERFORMANCE CURVES
MODEL M4 PLASTIC RUBBER-FITTED
Height ............................527.1 mm (20
3
⁄
4
")
Width .............................393.7 mm (15
1
⁄
2
")
Depth.............................284.2 mm (11
3
⁄
16
")
Ship Weight ....Polypropylene 17.5 kg (38 lbs.)
PVDF 22.5 kg (49 lbs.)
Teflon
®
PFA 23.9 kg (52 lbs.)
Air Inlet ..................................9.5 mm (
3
⁄
8
")
Inlet .....................................3.81 cm (1
1
⁄
2
")
Outlet...................................3.81 cm (1
1
⁄
2
")
Suction Lift .....................5.49 m Dry (18')
8.53 m Wet (28')
Displacement per
Stroke ...................... 1.02 l (0.27 gal.)
1
Max. Flow Rate........287.69 lpm (76 gpm)
Max. Size Solids....................4.8 mm (
3
⁄
16
")
1
Displacement per stroke was calculated at 4.8
Bar (70 psig) air inlet pressure against a 2 Bar
(30 psig) head pressure.
Example:
To pump 159 lpm (42 gpm)
against a discharge pressure head of 2.7
Bar (40 psig) requires 4.1 Bar (60 psig)
and 40.8 Nm
3
/h (24 scfm) air consump-
tion. (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.
10
20
30
40
50
60
70
80
90
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
(10)
[17]
(40)
[68]
(60)
[102]
(50)
[85]
(30)
[52]
GPM
[
l
/min]
Water Discharge Flowrates
[76]
[151]
[114]
[189]
[227]
[265]
[303]
Discharge Pressure
[340]
(20)
[34]
[38]
AIR CONSUMPTION
(SCFM)
[Nm
3
/h]
SECTION 5B
PERFORMANCE CURVES
MODEL M1 PLASTIC ULTRA-FLEX™-FITTED
Height ............................527.1 mm (20
3
⁄
4
")
Width .............................393.7 mm (15
1
⁄
2
")
Depth.............................284.2 mm (11
3
⁄
16
")
Ship Weight ....Polypropylene 17.5 kg (38 lbs.)
PVDF 22.5 kg (49 lbs.)
Teflon
®
PFA 23.9 kg (52 lbs.)
Air Inlet ..................................9.5 mm (
3
⁄
8
")
Inlet .....................................3.81 cm (1
1
⁄
2
")
Outlet..................................3.81 mm (1
1
⁄
2
")
Suction Lift .....................4.88 m Dry (16')
8.23 m Wet (27')
Displacement per
Stroke ........................ .68 l (0.18 gal.)
1
Max. Flow Rate..........234.7 lpm (62 gpm)
Max. Size Solids....................4.8 mm (
3
⁄
16
")
1
Displacement per stroke was calculated at 4.8
Bar (70 psig) air inlet pressure against a 2 Bar
(30 psig) head pressure.
Example:
To pump 132.5 lpm (35 gpm)
against a discharge pressure head of 2.7
Bar (40 psig) requires 4.1 Bar (60 psig)
and 51 Nm
3
/h (30 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]
10
20
30
40
50
60
70
80
90
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
(10)
[17]
(40)
[68]
(60)
[102]
(30)
[52]
(50)
[85]
GPM
[
l
/min]
Water Discharge Flowrates
[76]
[151]
[227]
[303]
[189]
[265]
[114]
Discharge Pressure
[340]
(20)
[34]
[38]