IM-P128-23
ST Issue 6
16
5.8 How to fit a double isolation conversion kit
-
A retrofit kit is available to convert a standard single isolation STS17.2 to a double
isolation (upstream) version. The double isolation conversion kit includes a spool piece
and additional ball valve parts.
-
Remove the bolts and nuts (
12
+
13
) and remove the upstream end cap (
6
).
-
Attach the spool piece (
27
) using the new bolts supplied with the conversion kit in combination
with the existing nuts (
12
+
13
and
14
+
15
) and tighten to the recommended torque (see
Table 3).
-
Loosely assemble the existing end cap (
6
) to the other end of the spool piece (
27
)
using the new nuts supplied with the conversion kit in combination with the existing
bolts (
12
+
13
and
14
+
15
), allowing enough gap to slide in the new ball valve and body
assembly (
2
).
-
Slide in the new ball valve and body assembly (
2
) between the spool piece (
27
) and
end cap (
6
) and tighten the bolts and nuts (
12
+
13
and
14
+
15
) to the recommended
torque (see Table 3).
-
Fit the new handle (
3
) onto the spindle of the new ball valve assembly (
2
), ensuring it
is in the correct orientation and secure in place by fitting the washer and nut (
4
+
5
) and
tighten firmly.
12
6
2
13
5
4
2
3
13
12
27
X is a double isolation
conversion kit
Fig. 6 How to fit a double isolation conversion kit to a single isolation valve
14
15
14
15
Summary of Contents for STS17.2
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