27
Disassembling the Main Valve and Cover Sections
Loosen the bolts and remove the cover permits removal of the main valve, main
valve holders and main valve spring. Remove the main valve seat from the main
body with a box wrench.
Check for damage on the seating and sliding surfaces of the main valve and the
gaskets.
[At startup following shutdown for a long period, always blow down the piston section
of the main body through the plug if equipped.]
172-65185A-08 (MC-COSR Multi-control Valve) 20 Nov 2014
Main Body
Cover
15 – 25 mm (
1
/
2
– 1 in)
Gasket
A
A: Main Valve Seat (with gasket)
B: Main Valve
C: Main Valve Holder
D: Main Valve Spring
E: Bolt
B
Main Valve Section
C
D
(15 – 25 mm)
(
1
/
2
– 1 in)
32 – 50 mm (1
1
/
4
– 2 in)
65 – 150 mm (2
1
/
2
– 6 in)
Plug (Option)
A
B
C
D
E
Main Valve Section
(65 – 150 mm)
(2
1
/
2
– 6 in)
Main Body
Plug (Option)
Main Body
A
B
C
D
Main Valve Section
(32 – 50 mm)
(1
1
/
4
– 2 in)
Cover
Gasket
Bolt
Cover
Gasket
Bolt
