Piping
Never use plastic (PVC) pipe for compressed air. Serious injury or death could result.
Any tube, pipe or hose connected to the unit must be able to withstand the temperature generated and
retain the pressure. All pressurized components of the air system must have a pressure rating of 200 PSI or
higher. Minimum recommended pipe size is 3/4 in. Larger diameter pipe is always better. Incorrect selection
and installation of any tube, pipe or hose could result in bursting and injury. Connect piping system to tank
using the same size fitting as the discharge port.
SCFM
10
20
40
60
100
Chart 1
Installing A Shut-Off Valve
Figure 5
Never install a shut-off valve between the compressor pump and the tank. Personal injury and/or equipment
damage may occur. Never use reducers in discharge piping.
When creating a permanently installed system to distribute compressed air, find the total length of the
system and select pipe size from Chart
where condensation can gather and freeze.
Apply air pressure to the piping installation and make sure all joints are free from leaks BEFORE
underground lines are covered. Before putting the compressor into service, find and repair all leaks in the
piping, fittings and connections.
Minimum Pipe Size For Compressed Air Line
LENGTH OF PIPING SYSTEM
25 FEET
50 FEET
1/2 inch
1/2 inch
3/4 inch
3/4 inch
3/4 inch
1 inch
3/4 inch
1 inch
1 inch
1 inch
A shut-off valve should be installed on the discharge port of the
tank to control the air flow out of the tank. The valve should be
located between the tank and the piping system.
1.
Bury underground lines below the frost line and avoid pockets
9
100 FEET
250 FEET
3/4 inch
3/4 inch
3/4 inch
1 inch
1 inch
1 inch
1 inch
1 inch
1 inch
1-1/4 inch