Spirax Sarco STS17.2 - Page 15

IM-P128-23 ST Issue 6
15
Fig. 5
STS17. 2 version
with single upstream isolation
1317
8
9
10
11
5
8
16
15
21
22
18
20
20
20
24
23
BDV1
blowdown
valve
SSL1
integral
sensor
WLSL1
integral
sensor
14
2
12
25
26
Table 2 Recommended tightening torques
Item
or
mm
Torque
N m lbf ft
5 and 11
½" and ¾" 13 5.4 - 8.1 4 - 6
1" 14 10.8 - 13.5 8 - 10
12, 14 and 13, 15 M6 15 - 17 11 - 12
16 32 A /F M35 x 1.5 190 - 200 140 - 147
20 Adaptor 32 A /F M28 x ISP 170 - 190 126 - 140
23 19 A/ F 50 - 55 37 - 40
24 24 A/ F 50 - 55 37 - 40
25 24 A/ F
Not applicable Not applicable
26 17 A /F 22 - 25 16 - 18
*
Please note that the optional
Spiratec SSL1 and WLSL1
sensors (items 20 + 23 or 24)
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.
*
*