DMN-WESTINGHOUSE AL-BL Rotary Valves
Code: AL-E.B.01.B 11-2012
20
Support the rotor to keep it in line with the bore otherwise damage
may be caused to the rotor blades and/or bore of the body. Place
the rotor on a wooden surface to prevent the rotor blades from
being damaged.
- Remove the air purge glands (431) and gland packing (431).
3.1.4.2 Re-assembly standard execution
After thoroughly cleaning, checking and renewing necessary parts the valve should be
re-assembled as follows:
- Check that the ball-bearings (105) are pressed in tight to the end cover
(102/107). If necessary, tap lightly on the outer bearing ring using a copper rod,
to ensure that the bearing is seated properly.
- Air purge glands:
reassemble the complete air purge gland in both end covers and secure by
means of nuts (413).
- Gland packing:
reassemble the gland follower (421) to the end covers without packing cord.
Clean the spigot edges of both end covers (102/107) carefully. To
ensure the rotor position is concentric with the valve bore the end
cover spigots are a light interference fit in the body. Before
assembly the jack screws (152) have to be removed.
- Assemble the end cover to the non-drive side of the body and secure it using
bolts (152).
- Assemble rotor blades finger tight to rotor with screws and washers.
- Fit the rotor (the adjustable blade not yet adjusted) in the body and gently push
the rotor shaft through the sealing area at the non drive side end cover. Push
the rotor further until the shaft end is positioned inside the ball-bearing.
- Fit the drive side end cover. Fit the spacer ring (202), retainer ring (221) and the
locknut (222) at both ends of the rotor shaft.
To Next Page
Loading...
