6. Disassembly and Inspection
It is a recommended practice to dismantle and inspect the COS/COSR once a year for preventive
maintenance purposes. It is especially important to do so immediately after the initial run of a new
line or before or after the equipment is out of service for a long period of time.
The size and shape of some COS and COSR parts for large valve sizes will be different from
those shown.
Adjustment Section
Pilot Section
Piston Section
Separator/
Main Valve
Section
Steam Trap
Section
Pilot
Cover
(65 - 100 mm; 2 " - 4")
see page 17
Adjustment Section
Pilot Section
Piston/
Main Valve
Section
Cover / Plug
Pilot Cover
(65 - 150 mm; 2 " - 6")
see page 17
COS COSR
2
1
/
2
1
/
English
15
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