188
PRESSURE REGULATOR (OPT)
Application
The pressure regulator is fitted in air
brake systems to regulate the operat-
ing pressure and to clean the air
delivered by the compressor.
Some valve types are fitted with an
intergral safety valve, in order to pro-
tect the compressed air systems
against excessive pressures.
The unloader valve/relief valve combi-
nation is required with air compressors
having delivery ó700ֹ/min of free air,
to provide for a relief of the unloader
unit by means of division of the air
flow.
Charging position
Legend : 8%Inlet
1%Outlet 9%passage Ports :
2%Cut–out piston 10%Check valve 1%Energy inlet
3%Outlet 11%Safety valve 21%Energy outlet
4%Bore 12%Screen (to reservoir)
5%Valve plunger 13%Breather valve 23%Energy outlet
6%Control piston 14%Compression spring (to relief valve)
7%Compression spring 15%Relief valve AE 13.. 3%Exhaust
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