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

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Magnetic Drive

3-MD-HC
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.

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.

Specifications
Model
No.
3-MD-HC
3-MD-HC
3-MD-HC

Item
Intake
Discharge
No.
Size
Size
581603 3/4" FNPT 1/2" MNPT
581613 3/4" FNPT 1/2" MNPT
581697 3/4" FNPT 1/2" MNPT

Listing(s)
UR/C-CSA
UR/C-CSA

HP
Volts
Hertz
1/12
115
60
1/12
230
60
Pump Head Less Motor

Amps
2.4
1.2

Watts
180
181

Performance (GPM @ Head)
1'
3'
6'
9'
12.5 11.5 11.1
10
12.5 11.5 11.1
10

15'
7.1
7.1

Shut Off
Feet
PSI
21.9
9.5
21.9
9.5

Power
Cord (ft.)
6
6

Weight
(lbs.)
8.80
8.80
2.30

Replacement Parts
ITEM
A
B
C
D
E
F
1
2
3
4

PART NO.
181204
924008
921077
181143
180057
182006
920003
911403
182602
180048

DESCRIPTION
Volute
O-ring
Thrust washer
Impeller/Bushing
Shaft
Housing
Wing nut
Stud, collared
Drive magnet
Mounting bracket

NOTE: Parts A–F contact fluid

PO Box 12010 • Oklahoma City, OK 73157
Phone: 800.701.7894 • Fax: 800.701.8046
E-mail: customerservice@littlegiant.com

www.LittleGiantPump.com

Form 995777 — 02/2003
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