Monitor nozzle

1.A nozzle capable of turning completely round in a horizontal plane and having a limited play in a vertical plane, used in hydraulic mining, fire-extinguishing apparatus, etc.
References in periodicals archive ?
Jim Lynch, Yukon Placer Mining's pump operator, said, "The only problem I ever had with the unit was the monitor nozzle was so powerful it would swing around and take off the exhaust stack."
It consists of flame, smoke, and gas detectors, emergency shut down stations, spill impoundment with sump pumps, and monitor nozzles. The flame, smoke, and gas detectors are strategically located throughout the plant to detect fire, smoke, and natural gas and are wired to send a signal to the SCADA system.
Although the monitor nozzles have been dry for almost a hundred years, nature has continued the erosion begun by man.