BENDIX SR-7 SPRING BRK MODULATING VALVE Toepassingen - Pagina 5
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CONTROL LINE PRESSURE
SECONDARY RESERVOIR
CONSTANT PRESSURE
INLET / EXHAUST VALVE SEATED
FIGURE 7 - NORMAL SERVICE APPLICATION
NORMAL SERVICE APPLICATION (FIGURE 7)
During a service brake application, the valve remains in the
lap position. The SR-7
™
valve monitors the presence of air
pressure in both primary and secondary delivery circuits.
CONTROL LINE PRESSURE
SECONDARY RESERVOIR
CONSTANT PRESSURE
FIGURE 8 - PARKING
à
à
MAIN AND CONTROL PISTONS MOVE UP
à
INLET VALVE SEATED
à
BALANCE PORT - PRIMARY
CIRCUIT PRESSURE
à
CONTROL PORT - SECONDARY
CIRCUIT PRESSURE
DELIVERY TO SPRING BRAKES
à
PARKING (FIGURE 8)
Actuating the park brakes (by pulling the dash valve button
out) exhausts spring brake air pressure through the SR-7
valve exhaust port.
BALANCE PORT
CONTROL PORT
AIR EXHAUSTS FROM
à
SPRING BRAKES
™
5