-18-
Model T32338 (Mfd. Since 12/20)
Choosing Air Hose
Diameter
A larger inner diameter will allow for higher airflow
delivery. Refer to
Airflow Delivery (CFM) on
Page 19 for more information. The higher CFM a
tool requires, the larger the inner diameter of the
hose will need to be (see
Figure 15).
Airflow Delivery
Required ID
0–3 CFM
1
⁄
4
" (3mm)
3.1–5.9 CFM
1
⁄
4
"–
3
⁄
8
" (3mm–10mm)
6+ CFM
3
⁄
8
"+ (10mm+)
Figure 15. Recommended hose inner diameters.
Fittings
Many hoses come with fittings installed. The sim-
plest option is to find a hose with two fittings: one
that matches the compressor output port, and one
that matches your intended attachment tool. If the
hose does not match the port, a coupler may be
needed.
You will need to determine the size of the fit-
tings and whether they are male or female (see
Figure 16). A male fitting can only attach to a
female fitting, and vice versa. There are also a
number of coupler/plug styles on the market, so
be sure the two match or you will likely not have
an airtight connection.
Figure 16. Example of male and female fittings.
The outlet ports on the T32338 are
1
⁄
4
" NPT
female quick-couplers (see
Figure 17), so you will
need a
1
⁄
4
" NPT male plug attached to the hose
for each port.
Male
Coupler
Female
Coupler
Male
Plug
Female
Plug
Figure 17. Location of quick-coupler outlet ports.
Quick-Couplers
Length
There are many options when it comes to hoses.
The most important aspects for an air compressor
are going to be length, diameter, and fittings. The
material of the hose is also an important consid-
eration, but this will depend more on your applica-
tion and preference.
Consider your applications before deciding on a
hose length. Longer hoses, or hose connections
to extend hose length, can increase your mobility,
but will probably result in some pressure loss.
If your work area will be small, you may be able
to use a shorter hose without having to move the
compressor or stretch the hose. Never pull the
hose to move the compressor or put any unneces-
sary stress on the hose, valves, fittings, or tanks.
An air compressor becomes very hot during oper-
ation, and the pressure switch and motor often
produce sparks. Some applications, like spraying
or sanding, involve flammable material that cre-
ate a fire or combustion hazard when they are
performed too close to a compressor. The hose
length must allow for the air compressor to remain
at least 20 feet away from the operation.
