Little Giant 1-MD User Manual

1-MD

Features

n Thermally protected, open, fan-cooled motor

n Sleeve bearings

n 6' power cord with 3-prong plug (no plug on

230V)

n Specific gravity to 1.1

n Fluid temperature to 150°F

n Ambient air temperature to 77°F

Magnetic Drive

NOTE: Consult your local distributor or the

factory for applications with higher ambient
temperatures, specific gravities and viscosities.

Construction

n Volute — Glass-filled polypropylene

n Housing — Glass-filled polypropylene

n Impeller — Glass-filled polypropylene and

ceramagnet “A” (barium ferrite)

n Shaft — Titanium

n Thrust Washers — Titanium

n O-Ring — Nitrile

The Little Giant MD series features leakproof, seal-less magnetic drives and are designed for in-line, non-submersible
use. Volute and magnet housing are glass-filled polypropylene for excellent chemical resistance. Impeller is glass-filled
polypropylene and ceramagnet “A” (barium ferrite). Shaft and thrust washers are titanium 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.

1-MD

0

2

4

6

8

10

12

0 5 0 100 150 200 250

FLOW - GALLONS/HOUR

HEAD - FEET

0

1

2

3

0 200 400 600 800

FLOW - LITERS/HOUR

HEAD

- M

ETERS

60 Hz
50 Hz

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.

1-MD 589002 1/2" Hose 1/2" Hose UR/C-CSA 1/70 115 60 0.8 60 180 165 90 20 10.6 4.6 6 4.00
1-MD 589012 1/2" Hose 1/2" Hose 1/70 230 50/60 .66/.64 100 180 165 90 20 10.6 4.6 6 6.25
1-MD 589098 1/2" Hose 1/2" Hose Pump Head Less Motor 2.00

Item

No.

Intake

Size

Discharge

Size Listing(s) HP Volts Hertz Amps Watts

Performance (GPH @ Head) Shut Off

Power

Cord (ft.)

Weight

(lbs.)1' 3' 6' 9' Feet PSI

Replacement Parts

ITEM PART NO. DESCRIPTION

A 188010 Volute
B 924025 O-ring
C 921065 Thrust washer
D 188100 Impeller
E 188050 Shaft
F 188001 Housing
1 920020 Wing nut
2 911503 Stud, collared
3 188124 Drive magnet
4 920002 Mounting bracket

NOTE: Parts A–F contact fluid

PO Box 12010 • Oklahoma City, OK 73157

Phone: [phone] • Fax: [phone]

E-mail: [e-mail]

Form 995768 — 03/2001www.LittleGiantPump.com