Val-Matic Swing Check Valve - Manual (Page 7)

VAL-MATIC'S SWING CHECK VALVE
OPERATION, MAINTENANCE AND INSTALLATION
Page 7 of 13
AIR CUSHION REMOVAL
1. Support or prepare to lift cylinder (42).
Carefully remove clevis pins (43 and 44).
2. Remove cylinder (42).
3. Remove bolt (46) and lever (45).
4. Remove Key (32).
5. Remove weight and lever and cylinder bracket
(40), bolts (46) and washers (47).
VALVE DISASSEMBLY
1. Remove the cover bolts, nuts, and washers
(24, 28, & 29) on the top cover.
2. Pry cover (2) loose and lift off valve body.
Valves 14” and larger have 3 tapped holes in
cover for lifting eyes. See Table 2 for lifting
eye bolt sizes.
3. If desired, remove stop bolt (60), washer (61)
and nut (62). The stop bolt (60) should be
match marked to assure re-installation to the
same extension length.
4. Sling and support yoke arm (4) and disc (3)
slightly off the seat (23)
5. Remove bolts (20), washers (19) and o-ring
(22) from blind hinge cover (18-2).
6. Remove bolts (20) and washers (19) from
through hinge cover (18-1).
7. Remove packing (16) and packing shim (15).
8. Push hinge pin from keyed end out of blind
end side until retaining ring (21) can be
removed. Remove retaining ring (21).
9. Continue to push hinge pin out until blind end
bushing (14) moves out and can be removed.
Remove bushing (14).
10. Push hinge pin back into the blind end until the
bushing (14) on the keyed and of the hinge pin
is moved enough to remove. Remove bushing
(14).
11. Slide the supported yoke arm (4) and disc (3)
back and forth on the hinge pin until the key
(6) can be removed from between the yoke
arm (4) and the body (1). Note: Take care not
to damage the disc seat (8) or the body seat
(11) while moving yoke arm (4) and disc (3).
Remove key (6)
12. Remove hinge pin (5) from keyed end.
13. Lift the supported yoke arm (4) and disc (3)
and place on a clean floor or pallet.
14. If desired, disassemble yoke arm (4), retaining
rings (25), disc pins (24), and disc (3).
15. Remove seat retaining bolts (10), washer (9),
seat retaining segments (7) and rubber seat
(8).
16. Remove body seat (11). In 12” and smaller
valves, the seat (11) is screwed into the body
and must be threaded into place. In 14” and
large the seat (11) is held into the body with
set screws (12). Remove he body seat (11),
set screws (12), and o-ring (23).
17. Clean and inspect parts. Replace worn parts
as necessary and lubricate parts with FDA
grease such as Lubriko #CW-606.