ITT Flojet 4405 Series User Manual

Four chamber diaphragm design; Self-priming
up to 6 ft. suction lift; Pump able to run dry
Note: The built-in bypass valve eliminates the need
for an accumulator tank. Do not install in a
system with an accumulator tank. The tank
will interfere with the internal bypass valve.
Pump Series Dimensions - Inches (mm) Weight
Height Width Length lb. (kg)
(Available on 12 & 24V d.c. Models) 4405-XXX 3.75 (95) 6.3 (160) 8.2 (208)
3.9 (1.8)
AMP DRAW
FLOW
PRESSURE SWITCH
MODEL*
VOLTS
@ 10 psi (0.7 bar)
GPM (l/min)
MAX psi (bar)
4405-143
12V dc
3.9
3.3 (12.5)
35 (2.4)
4405-343
24V dc
2.0
3.3 (12.5)
35 (2.4)
4405-443
32V dc
1.3
3.3 (12.5)
35 (2.4)
* CE fully suppressed models are identified by a prefix “R” and a CE mark on the label. (i.e. R4405-343).
Self Declaration Of Conformance (SDOC) is available upon request.

ITT Flojet 4405 Series Specifications

General

Brand	ITT
Model	Flojet 4405 Series
Category	Water Pump
Language	English

Summary

Troubleshooting Pump Issues

Failure to Prime

Motor operates but pump does not discharge water due to restricted intake or air leaks.

Motor Falls to Turn On

Troubleshooting when the motor does not start, checking wiring, power, fuse, or switch.

Pulsating Flow

Addressing inconsistent water flow caused by restricted delivery or clogging in lines.

Pump Fails to Turn Off

Diagnosing why the pump continues to run after all fixtures are closed.

Low Flow and Pressure

Identifying causes for reduced water flow and pressure, like air leaks or worn parts.

Pump Disassembly Guide

Upper Housing Disassembly

Steps for removing and inspecting the upper housing and check valve assembly.

Lower Housing, Diaphragm, Motor Disassembly

Procedure for separating the lower housing, diaphragm, and motor components.

Pump Reassembly Guide

Motor Reassembly

Instructions for reassembling the motor with the lower housing assembly.

Diaphragm Reassembly

Guidance on correctly seating the diaphragm and aligning internal components.

Lower Housing Reassembly

Steps to attach the lower housing assembly back to the motor.

Pump Service Parts and Accessories

Automatic Water System Pump Service Parts

List of replacement parts for the pump, including part numbers and model compatibility.

Accessories Quick Connect Port System

Overview of available quick connect port accessories with part numbers and descriptions.

Product Information and Support

Strainers

Details on compatible strainer models, their inlet/outlet types, and screen mesh size.

Warranty Information

FLOJET's limited warranty terms for the product, covering defects for two years.

Return Procedure

Instructions on how to initiate a product return, including obtaining an authorization number.