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Design and operation
Table 3.2.
List of symbols used in diagrams
Symbol
Pneumatic connection
Drain valve
1
Main control valve
4
1
2
Relay valve
4
1
2
Automatic regulator of braking force
Manual regulator of braking force
Line connection
Air tank
Brake cylinder
Valve - control connection
1
2
Air filter
with covers (2), that protect the connec-
tions against contamination and entrance
of dirt into the system. They are made of
coloured plastic (black connector - supply
and control air for a 1-wire system, red
connector - supply air for a 2-wire system,
yellow connector - control air for a 2-wire
system). The connections are made ac-
cording to recommendations of DIN ISO
1728 standard. Thanks to this, the con-
nections cannot be incorrectly connected
Description
2
1
Figure 3.7 Pneumatic connection
(1) connection body
(2) connection cover
PRONAR T700M/1
Section 3
621-G.04-1
3.9
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