Pipeline ancillaries Sight glasses
10
Spare parts The spare parts available are shown in solid outline. Parts drawn in a grey line are not supplied as spares. Available spares Set of windows and gaskets 3, 4 Please note: For the DN25 and DN32 sizes a set of bolts (16 A/F M10 x 40) is also included due to the increased thickness of the glass. Set of gaskets 4 How to order spares Always order spares by using the description given in the column headed 'Available spares' and state the size and type of the sight glass. Example: 1 off Set of windows and gaskets for a Spirax Sarco SG253 sight glass.
5
(not an available spare)
4 3 4
7.8.17
4
3 4
10.8 16
5 (not an available spare)
Recommended tightening torques
Item Size
Qty
or mm
N m
DN15 - DN20
17 A/F
M10 x 30
12
Pre 08-2010:
17 A/F
M10 x 35
5
DN25 - DN32
8
28
Post 08-2010:
16 A/F
M10 x 40
DN40 - DN50
19 A/F
M12 x 40
38
TI-P130-01 CMGT Issue 11
Page 4 of 4
SG253 Sight Glass
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