SANDPIPER MHDF3 - Manual (Page 3)

mhdf3dl7sm-rev1210 Model MHDF3 Page 1
Heavy Duty Flap Valve
MHDF3
Type 7
Air-Operated
Double Diaphragm Pump
ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA
INTAKE/DISCHARGE PIPE SIZE
3" 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
ISO9001 Certified
Environmental
Management System
ISO14001 Certified
MARATHON ® pumps are designed to be powered only by compressed air.
10
0
20
30
40
50
60
70
80
90
20 0 40 60 80 100 120 140 160 180 200 220 240 260
20(34) 40(68)
60(101.9)
80(135.9)
100(169.9)
100 PSI
80 PSI
60 PSI
40 PSI
20 PSI Air Inlet Pressure
100
Liters per minute
U.S. Gallons per minute
CAPACITY
0 100 200 300 400 500 600 700 800 900 1000
AIR CONSUMPTION
SCFM (M 3 /hr) BAR
HEAD
0
1
2
3
4
5
6
7
PSI
120(203.9)
MODEL HDF3-A 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%.
II 2GD T5
See pages 2, 16 & 17
for ATEX ratings