BENDIX BW1431 Manuel D’Utilisation

The relay valve in an air brake system functions as a relay
station to speed up the application and release of the brakes.
The valve is normally mounted at the rear of the vehicle in
proximity to the chambers it serves. The valve operates as a
remote controlled brake valve that delivers or releases air to
the chambers in response to the control air delivered to it
from the foot brake valve or other source.

The R-12

™

 and R-14

™

 relay valves are designed for either

reservoir or frame mounting. A universal mounting bracket is

furnished that permits easy interchange with other Bendix
relay valves. Both valves are available in the two body styles
illustrated in Figure 1. The R-14

™

 valve differs from the

R-12

™

 valve in that it incorporates a quick release and anti-

compounding feature located above its horizontal service
port. The R-14

™

 valve’s anti-compound feature allows it to

be conveniently used as either a service or spring brake
relay valve. An exhaust cover is installed that protects the
1/8" balance port when the R-14

™

 valve anti-compound

feature is not in use.

SERVICE (1)

SUPPLY (2)

DELIVERY

SERVICE (1)

DELIVERY

SUPPLY (2)

DELIVERY

DELIVERY

SUPPLY