TLV COS Série Manuel D'utilisation page 20

6.5 Disassembling the Separator (COS) and Main Valve (COS/COSR)
Turn the 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 COS is
returned to the normal attitude.
Removal of the separator and pressed-in sleeve for COS, or the cover plug for COSR, permits
removal of the main valve spring, the main valve, the main valve holder and the separator
screen. Remove the main valve seat from main the body with a box wrench.
Check for damage on the seating and sliding surfaces of the main valve and main valve holder,
the seating surface of the main valve seat and the gaskets, and for clogging of the separator
screen.
[At start-up following shutdown for a long period, always blow down the piston section of the
main body through the plug (if optional plug is supplied).]
COS
Trap Body
Trap Body
Gasket
Bolt
COSR
Bolt
Cover (with Gasket)
COSR-3
/
(32 – 50 mm, 1 " – 2")
1
4
COSR-16
(32 – 150 mm, 1 " – 6") 1
COSR-21
/
(15 – 100 mm,
1
2
The size and shape of some COS and COSR parts for large valve sizes will be different from
those shown.
Separator Screen
Sleeve
Separator
Cover Plug (with Gasket)
COSR-3
(20, 25 mm,
COSR-16
/
(15 – 25 mm,
4
" – 4")
Main Body
Corrugated
Spring
Washer
Main Body
/
", 1")
3
4
/
1 " – 1")
2
̶ 19 ̶
Plug
(Option)
Main Valve Seat
(with Gasket)
Main Valve
Main Valve Holder
Main Valve Spring
Main Valve Seat
(with Gasket)
(15 – 50 mm,
Main Valve Seat
(with Gasket)
(65 – 150 mm, 2 " – 6")
Bolt
Main Valve
Main Valve Holder
Main Valve Spring
/
1 " – 2")
2
/
1
2