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LT Valve Manual - 3.0 Maintenance
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Valves should be greased as part of a regular maintenance program. Regular greasing will increase the service life of the internal valve parts. Routine disassembly and cleaning as part of a maintenance program can prevent unnecessary damage to the valve body. Dixie Iron Works, Ltd. recommends that valves be greased after every job or every 5 actuations, whichever one comes first.
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Valves should be greased according to the severity of use. Each operating company should establish guidelines for a greasing and/or disassembly program. These guidelines should be based on the operating conditions. Special consideration should be given for conditions in which the following would be involved:
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- Abrasives in the fluid stream
- High flow rates
- Caustic or Acidic fluid streams
- High Temperature
- Fluid Streams that would act as solvents such as condensate
- High number of valve actuations
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Valves should not be greased while under pressure. In addition, valves should not be disassembled for repair while part of an operating arrangement such as a manifold. This should not be attempted even though the valve may be isolated from the fluid stream by other valves.
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Never attempt to remove the grease fitting from a valve to relieve a pressure-locking situation.
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