hdf3mdl2sm-rev0316
Model HDF3-M & HDF4-M Page 1
Heavy Duty Flap Valve
HDF3-M
HDF4-M
Type 2
Air-Operated
Double Diaphragm Pump
ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA
INTAKE/DISCHARGE PIPE SIZE
HDF3-M: 3" 150# ANSI Flange
HDF4-M: 4" 150# ANSI Flange
CAPACITY
0 to 260 gallons per minute
(0 to 988 liters per minute)
AIR VALVE
No-lube, no-stall
design
SOLIDS-HANDLING
Up to nearly 3"
(75mm)
HEADS UP TO
125 psi or 289 ft. of water
(8.8 Kg/cm
2
or 88 meters)
Quality System
ISO 9001 Certified
Environmental
Management System
ISO 14001 Certified
SANDPIPER
®
pumps are designed to be powered only by compressed air.
II 2GD T5
See pages 17 & 18
for ATEX ratings
U.S. Gallons per minute
10
0
0
20
30
40
50
60
70
80
90
100
20
40
60
80
100 120 140 160 180 200 220 240 260
20(34)
60 PSI
40 PSI
40(68)
60(101.9)
80(135.9)
100(169.9)
120(203.9)
140(237.9)
160(271.8)
180(305.8)
20 PSI Air Inlet Pressure
100 PSI
80 PSI
Liters per minute
CAPACITY
0
100
200
300
400
500
600
700
800
900
1000
AIR CONSUMPTION
SCFM (M
3
/hr)
PSI
BAR
HEAD
0
1
2
3
4
5
6
7
200(339.8)
MODEL HDF3-M /HDF4-M Performance Curve
Performance based on the following: elastomer fitted pump, flooded suction,
water at ambient conditions. The use of other materials and varying hydraulic
conditions may result in deviations in excess of 5%.