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VMAC - Vehicle Mounted Air Compressors
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77
Pressure Control Tubes
A 1/4 in PTFE tube (shown in light blue) connects the discharge valve to the lower
fitting on the side of the compressor inlet valve. This provides the system air
pressure (factory setting 140 psi) to operate the inlet poppet valve (Figure 50).
Figure 50 — 1/4 in Pressure control tube
1/4 in PTFE pressure
control tube
Discharge
valve
1/4 in compressor
fitting and air
bleed muffler
A 3/16 in PTFE tube (shown in green) connects the discharge valve to the fitting
on the side of the compressor inlet valve. This provides the system air pressure
(factory setting 140 psi) to operate the inlet valve regulator which works in tandem
with the discharge valve (Figure 51).
Figure 51 — 3/16 in Pressure control tube
3/16 in PTFE pressure
control tube
Discharge valve
3/16 in compressor
fitting at inlet regulator