SERIES 762 BIDIRECTIONAL SLURRY KNIFE GATE VALVES
Installation, Operation, and Maintenance Manual
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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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13.0 STANDARD MAINTENANCE
WARNING
Verify line is depressurized before installing, removing, or
repairing a valve or operator.
Do not pressurize the line without an operator on the valve.
WARNING
After completing any alterations or maintenance procedures, the
product must be tested to confirm performance requirements.
NOTICE
Any modification or use of unauthorized parts voids any and all
warranty considerations.
NOTICE
Note assembly positions before removal.
13.0.1 Inspect the valve body assembly and gate at a regular interval.
Check for any signs of corrosion, components wear and/or
damage caused by process media.
13.0.2 Look for corrosion, galling or lack of lubrication in the valve
stem, stem nut or extension stems. If the valve stem requires
lubrication, utilize the grease fitting provided and pump standard
bearing grease through the collar/yoke hub to lubricate the stem
and stem nut assembly. Additional lubrication may be applied
directly to stem or stem threads.
13.1
LUBRICATION
WARNING
Hydrocarbon based greases cannot be used to lubricate these
valves as the elastomer seats will swell and disintegrate.
13.1.1
Series 762 valves are lubricated when assembled – therefore
lubrication before first usage is not required if the valves are not
stored for an extended period.
13.1.2 Lubricate both sides of the valve with
silicon-based lubricant
,
every 100 strokes for NPS 3 - 10 (DN 80 - 250) sizes and every 50
strokes for NPS 12 (DN 300) and greater sizes, after long periods
of being left open or closed, or after infrequent cycling.
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