These manually operated service valves control the flow
This safety valve is a pressure relief type device. It is
of compressed air being discharged from the oil
normally closed and set to open at 125 PSI (8.79
separator tank through the minimum pressure valve
KG/CM2) should pressure in oil separator exceed that
assembly. The service valve on the hose reel controls
pressure. When pressure drops below safety valve
the flow of air through the hose mounted on the reel.
setting, the valve will close. No manual reset is required.
The other service valves are for the attachment of
Figure 2-5. Air discharge service valves and safety valve.