539527 1 Little Giant 3 MD HC Magnetic Drive Pump Specs Sheet
544363 1 Little Giant 3-Md-Hc Magnetic Drive Pump Specs Sheet 544363_1_Little Giant 3-MD-HC Magnetic Drive Pump Specs Sheet
539525 1 Little Giant 3-Md-Hc Magnetic Drive Pump Specs Sheet 539525_1_Little Giant 3-MD-HC Magnetic Drive Pump Specs Sheet
: Pump 539527 1 Little Giant 3-Md-Hc Magnetic Drive Pump Specs Sheet 539527_1_Little Giant 3-MD-HC Magnetic Drive Pump Specs Sheet pdf
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Features
n Thermally protected, open, fan-cooled motor
n Ball bearings
n 6' power cord with 3-prong plug (no plug on
230V)
n Specific gravity to 1.1
n Fluid temperature to 200°F
n Ambient air temperature to 77°F
n Run-dry capability up to 8 hours
NOTE: Consult your local distributor or the
factory for applications with higher ambient
temperatures, specific gravities and viscosities.
Construction
n Volute — Glass-filled Ryton®
n Housing — Glass-filled Ryton®
n Impeller — Glass-filled Ryton® w/carbon bushing
n Shaft — Ceramic
n Thrust Washers — Ceramic
n O-Ring — Viton®
The Little Giant MD-HC series features leakproof, seal-less magnetic drives and are designed for in-line, non-submersible
use. Volute, magnet housing and impeller are glass-filled Ryton® for excellent chemical resistance. Ceramic shaft and
thrust washers are 99.5% pure alumina for excellent wear and trouble-free service. Pumping heads are easily rotated,
cleaned or serviced with no special tools required. Spindle shaft is supported at both ends to prevent impeller damage
during start-up and stop of pump.
Magnetic Drive
3-MD-HC
Form 995777 — 02/2003www.LittleGiantPump.com
3-MD-HC
NOTE: Designs and dimensions may vary for various reasons (i.e. type of motor). This information should be used as
general guide rather than an unqualified guarantee. Specifications are subject to change without prior notice.
Replacement Parts
ITEM PART NO. DESCRIPTION
A 181204 Volute
B 924008 O-ring
C 921077 Thrust washer
D 181143 Impeller/Bushing
E 180057 Shaft
F 182006 Housing
1 920003 Wing nut
2 911403 Stud, collared
3 182602 Drive magnet
4 180048 Mounting bracket
NOTE: Parts A–F contact fluid
Specifications
Model
No.
Item
No.
Intake
Size
Discharge
Size Listing(s) HP Volts Hertz Amps Watts
Performance (GPM @ Head) Shut Off Power
Cord (ft.)
Weight
(lbs.)1' 3' 6' 9' 15' Feet PSI
3-MD-HC 581603 3/4" FNPT 1/2" MNPT UR/C-CSA 1/12 115 60 2.4 180 12.5 11.5 11.1 10 7.1 21.9 9.5 6 8.80
3-MD-HC 581613 3/4" FNPT 1/2" MNPT UR/C-CSA 1/12 230 60 1.2 181 12.5 11.5 11.1 10 7.1 21.9 9.5 6 8.80
3-MD-HC 581697 3/4" FNPT 1/2" MNPT Pump Head Less Motor 2.30
PO Box 12010 • Oklahoma City, OK 73157
Phone: 800.701.7894 • Fax: 800.701.8046
E-mail: customerservice@littlegiant.com