5.4.2
Starting air shut-off valve
The starting air shut-off valve supplies the starting air pipe with starting air. The starting air shut-
off valve has a hand-wheel with three positions:
•
CLOSED
•
AUTO
•
OPEN.
Fig 5-21
Starting air shut-off valve (example)
I
I
001
002
003
004
005
006
007
008
009
010
011
017
016
015
014
013
012
018
Legend
001
Control valve
010
Non-return valve
002
Valve space
011
Starting air outlet
003
Spindle
012
Inlet chamber
004
Hand-wheel
013
Pressure switch PS5017C
005
To test valve
014
Solenoid valve CV7014C
006
Spring
015
Double check valve
007
Valve
016
Solenoid valve CV7013C
008
Starting air inlet
017
Control air inlet
009
Balance bore
018
Lever
) you can lock the valve in the selected position. During usual
operation the starting air shut-off valve is in position AUTO.
Starting air flows through the starting air inlet (008) into the inlet chamber (012), then through the
balance bore (009) into the valve space (002). The spring (006) and the pressure in the valve
space (002) keep the valve (007) closed.
X72-B
AA00-4325-00AAA-043A-A
Operation Manual
Starting air shut-off valve
Winterthur Gas & Diesel Ltd.
- 178 -
Issue 003 2021-12
