DeZurik APCO CVS-6000 Manuale di installazione, funzionamento e manutenzione - Pagina 7
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Maintenance
(Continued)
5. Set disc (10) with seat side up, install disc seat (6) and disc seat retaining ring (31) and fasten
with disc seat retaining screws (32).
6. Connect disc arm (9) assembly to disc (10) by inserting disc pins (8) and secure with disc pin
retaining rings (41).
7. Set disc (10) and disc arm (9) assembly on top of body seat ring (43).
8. Slip the pivot shaft flanged bushing (12) on the pivot shaft (13) with the flanged side against
shaft (13) collar.
9. Insert pivot shaft key (33) in keyway on pivot shaft (13).
10. Install pivot shaft (13) from right side of body (1) through disc arm (9) until pivot shaft collar is
flush with body.
11. Insert pivot shaft straight bushing (11) into the body (1) at the other end.
12. Insert pivot shaft seal (17) and pivot shaft cover seal (18) in their respective grooves.
13. Insert pivot shaft seal retainer (37) on pivot shaft cover and install on both ends of pivot shaft
(13). Screw on pivot shaft cover screws (16).
14. Install gasket or O-ring (3) and cover (2), then fasten with cover screws (4).
15. Series 6000 and 6100 valves only: Insert cushion lever key (34) on the pivot shaft (13) and
position cushion lever (27) in line with cylinder (20) and tighten set screw (35).
16. Series 6000 and 6100 valves only: Connect cushion lever (27) to cylinder (20).
17. Insert counterweight arm key on pivot shaft (13) if provided and slip counterweight arm
assembly in place. Set arm at an angle approximately 25º - 30º below horizontal axis and
secure with lever arm bolts (55) and Nuts (56).
18. Install counterweight (29) at desired setting and secure with set screws (36).
Disc Seat Replacement
Servicing the valve while the pipeline is under pressure can cause personal
injury or equipment damage. Relieve pipeline pressure before servicing the
valve.
1. Relieve the pressure in the pipeline and close the valve.
2. Remove valve from pipeline.
3. Remove Seat Retaining Ring Screws (32) and Seat Retaining Ring (31) from Disc (10).
4. Remove old Disc Seat (6) and replace with new disc seat.
5. Re-install Seat Retaining Ring Screws (32) and Seat Retaining Ring (31) in Disc (10).
6. Re-install valve in pipeline.
December 2012
APCO CVS-6000 Swing Check Valves
Page 7
DeZURIK
D12006