Spirax Sarco STS17.2 - Page 7

IM-P128-23 ST Issue 6
7
Fig. 1
STS17.2 version
with single upstream isolation
Upstream isolation
valve
Downstream isolation
valve
2
2
Upstream isolation
valve
Downstream isolation
valve
16
BDV1
blowdown
valve
2
2
STS17.2 version
with double upstream isolation
Strainer
Optional
Upstream isolation
valve
SSL1
integral
sensor
WLSL1
integral
sensor
Strainer
1
16
2
2
3
3
3
3
3
19
19
Please note that the optional Spiratec
SSL1 and WLSL1 sensors must not be
fitted when the STS17.2 is installed
in a vertical application. However a
sensor can be fitted to a UTD30 steam
trap if fitted.
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