What are operating requirements to be kept in mind for hydrant valves?

Proper operation of hydrant valves will result in a long and useful life, and at the same time, will ensure that the valve gives effective service when required to do so in an emergency. Certain points to be kept in mind while operating hydrant valves –

  • Ensure that operators are familiar with operation of the hydrant i.e. direction for opening/ closing.
  • Open and close the valve slowly – this will prevent water hammer, and ensure safety of operator and equipment.
  • Do not overtighten the valve (or use spanners) when closing. If valve leaks after closing, it means that the seat washer is not sealing against its seat. This could be due to foreign objects, or wear and tear of washer. Overtightening may damage the threads, bonnet and result in failure of hydrant body.
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