Little Giant 3-MDX User Manual

3-MDX & 3X-MDX

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 trouble­free 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-MDX & 3X-MDX

3-MDX
3X-MDX

0

2

4

6

8

10

12

14

16

18

20

0 100 200 300 400 500

FLOW - GALLONS/HOUR

HEA

D -

FEET

0

1

2

3

4

5

6

0 500 1000 1500

FLOW - LITERS/HOUR

HEA

D -

METERS

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-MDX 581031 5/8" Hose 5/8" Hose UR/C-CSA 1/25 115 60 1.65 126 456 420 408 360 19.0 8.2 6 6.25

3X-MDX 581030 5/8" Hose 5/8" Hose UR/C-CSA 1/50 115 60 0.94 67 348 300 198 — 7.0 3.0 6 5.50

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 181211 Volute
B 924007 O-ring
C 921067 Thrust washer
D 181112 Impeller 3-MDX
D 181111 Impeller 3X-MDX
E 180058 Shaft
F 181311 Backplate
1 920003 Wing nut
2 901418 Screw
3 180602 Drive magnet
4 181411 Mounting bracket

NOTE: Parts A–F contact fluid

PO Box 12010 • Oklahoma City, OK 73157

Phone: [phone] • Fax: [phone]

E-mail: [e-mail]

Form 995771 — 03/2001www.LittleGiantPump.com