172-65260m-05 (S-COS/S-COSR Pressure Reducing Valve) 27 Oct 2008
17
Disassembling the Separator and Main Valve (S-COS only)
Turn the S-COS upside down for easy dismantling of the separator and main valve.
Loosen the bolts and remove the trap body. Be careful, as the separator may drop off
when the S-COS is returned to the normal attitude.
Removal of the separator and pressed-in sleeve permits the removal of the main
valve spring, the main valve and separator screen. Loosen the main valve seat with a
box wrench and remove it from the body.
Check for damage on the seating and sliding surfaces of the main valve, on the
seating surface of the main valve seat and the gaskets, and for clogging of the
screen.
At start-up following shut-down for a long period, always blow down the piston
section of the main body through the plug (if optional plug is supplied).
Disassembling the Steam Trap (S-COS Only)
Loosen the bolts and remove the trap cover. Be careful, as hot condensate may
splash out. Remove the bolt from the float cover to reveal the float. Remove the float,
then loosen the valve seat with a box wrench and remove it.
Check to determine that there is no deformation
of the float, abnormality in the trap valve seat or
dirt accumulation in the trap cover.
Separator Screen
Main Body
Plug
(option)
Trap Body Gasket
Trap Body
Bolt
Sleeve
Separator
Main Valve Seat
& Gasket
Main Valve
Main Valve Spring
Float
Trap Cover Gasket
Trap Cover
Guide Pin
Bolt
Float Cover
Trap Valve Seat
& Gasket
Wave
Spring
