Ring main system
A ring main is the fixed compressed air line through your workshop: aluminium pipe on the wall, with drops to each work station. Unlike a hose snaking across the floor it delivers the same pressure everywhere, and nobody trips over it.The pipe is calibrated, so the fittings seal on it without welding, soldering or cutting threads. Saw, deburr, push in. That makes it a system you install yourself and extend yourself later.
32 products6 subcategories
32 products
Valves and condensate drains
Shut-off valve, Aignep
from €56.24
6 variants
3-5
Valves and condensate drains
Shut-off valve male thread, Aignep
from €44.56
2 variants
3-5
Saddle taps and manifolds
Saddle tap, Aignep
from €64.35
8 variants
3-5
Saddle taps and manifolds
Saddle tap female thread, Aignep
from €64.35
4 variants
3-5
Aluminium air pipe
Aluminium air pipe, 4 metres, Aignep
from €48.97
6 variants
3-5
Aluminium air pipe
Aluminium air pipe, 6 metres, Aignep
from €68.00
6 variants
3-5
Ring main fittings
Bend, 135 degrees, Aignep
from €22.81
6 variants
3-5
Ring main installation tools
Cutter for saddle tap, Aignep
from €153.12
2 variants
3-5
Ring main installation tools
Drill jig for saddle tap, Aignep
from €67.47
4 variants
3-5
Ring main brackets
Pipe clip with M6 quick fastener, Aignep
from €3.66
6 variants
3-5
Ring main fittings
End plug, Aignep
from €7.39
6 variants
3-5
Ring main fittings
Elbow coupler, Aignep
from €21.30
6 variants
3-5
Ring main fittings
Elbow coupler female thread, Aignep
from €19.07
5 variants
3-5
Ring main fittings
Elbow coupler male thread, Aignep
from €19.07
5 variants
3-5
Ring main brackets
Two-way elbow coupler with wall bracket female thread, adjustable, Aignep
from €38.41
2 variants
3-5
Ring main brackets
Elbow coupler with wall bracket female thread, adjustable, Aignep
from €21.41
3 variants
3-5
Aluminium air pipe
Obstacle bypass pipe, 180 degrees 20 mm
€49.46
3-5
Aluminium air pipe
Obstacle bypass pipe, straight 20 mm
€49.46
3-5
Ring main installation tools
Deburring tool for aluminium air pipe
€84.55
3-5
Ring main brackets
H14 spacer for pipe clip
€3.03
3-5
Ring main fittings
Straight coupler, Aignep
from €20.66
6 variants
3-5
Ring main fittings
Straight coupler female thread, Aignep
from €12.33
4 variants
3-5
Ring main fittings
Straight coupler male thread, Aignep
from €13.49
14 variants
3-5
Valves and condensate drains
Straight coupler with condensate drain, Aignep
from €26.31
2 variants
3-5Frequently asked questions about Ring main system
Answers to the most common questions from our customers
Look at the air consumption of your heaviest tool and the length of the run. For a workshop with a few stations 25 or 32 mm is plenty. Go past fifty metres, or hang several impact wrenches on it at once, and you want 40 mm with drops down to 20 or 25.
In a ring the air reaches every drop from two directions. That halves the pressure loss at the far point and a peak at one station barely shows at the others. A dead-end run always sags at the far end first.
Yes. Lay the pipe with a slight fall towards one point and put a drain there. That is where condensate belongs, not in the tools. Always take drops off the top of the pipe, then water cannot run into them on its own.
Yes, that is the whole point of the system. You need a fine-tooth saw, the deburring tool, and for saddle taps a drill jig with a cutter. Saw, square it off, push in. No welding set or blowtorch involved.
A pipe adaptor or a threaded fitting connects to what is already there, in sizes from 1/2 to 3 inch. On the largest pipe size a flange will do it too. Measure the thread size of your existing line first.