Pipes and Valves: Valve Maintenance

Describe tasks typically completed in preparation for performing maintenance on a valve. Describe how to adjust packing in a valve. Describe how to remove packing from a valve. Describe how to replace the packing in a valve. Describe a basic procedure for disassembling a valve. Describe tasks associated with inspecting the parts of a valve. Explain how lapping and spotting-in are performed on a valve seating area. Describe a basic procedure for reassembling a valve and returning it to service.