DirectFlo DF1400
Chapter 1: The DirectFlo 1400
Comco Inc.
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Issue Date: January 2009
STANDARD
HIGH CAPACITY
Overview
The Comco DirectFlo Model DF1400 is a bench-top machine that delivers a precisely
controlled stream of micro-abrasive particles at high velocity. With the appropriate
abrasive powder and the necessary adjustments, it will clean, deburr, cut or drill any
material, particularly hard or brittle ones. Since dry air is used as a propellant, it is a
relatively clean process.
The machine is essentially simple and uncluttered (see Figure 1-1). It consists
principally of an inlet air valve (rear panel), air pressure regulator with gage, modulator
(internal), abrasive powder tank, and mixing chamber. The abrasive PowderGate®
valve assembly to stop and start the abrasive flow, the footswitch to actuate it, and a
handpiece that holds the precision nozzle, complete the machine. All the component
parts are manufactured to the highest standards and are designed for maximum life
consistent with reasonable cost. The basic mechanisms employed, particularly the
modulator, are covered by the following patents:
United States:
3,053,016 Johnson
3,084,484 Hall
3,638,839 Weightman
United Kingdom:
1,243,294
Additional United States and foreign applications for patents are pending.
Figure 1-1: The Comco DirectFlo DF1400
