
ST18 &
ST22 (
U
.S.A. & Mexi
co
) Op
eratio
n & Maint
en
an
ce
Manual
A: System Diagrams
88
291
013
-1
37 R0
5
Sub
jec
t to
EAR, ECCN
EAR99
and
rela
ted
exp
ort c
ontro
l res
tricti
ons
.
67
A.2 ST18 & ST22 piping and instrumentation
Key Description
1
Air filter
2
Inlet valve
3
Capacity control integrated system
4
Oil cooler
5
Pressure switch
6
Indicator
7
Aftercooler
8
Minimum pressure valve
9
Single-stage fluid/air separator element
10
Strainer
11
Moisture separator
12
Pressure sensor
13
Temperature sensor
14
Compressor air end
15
Relief valve
16
Fluid/air separator tank
17
Sight glass
18
Oil plug
19
Fluid filter
20
Fluid filter pressure difference indicator
21
Strainer
22
Sight glass
23
Orifice
24
Thermal valve