Nozzle pressure values and typical nozzle pressures?

Nozzle pressure values and typical nozzle pressures?

• A. Nozzle pressure is the pressure entering the pump from the source
• B. Nozzle pressure is the pressure at the nozzle outlet; typical values around 50 psi for smooth bore and 100 psi for many fog nozzles
• C. Nozzle pressure refers to residual pressure in the hose
• D. Nozzle pressure is the pressure at the pump discharge

Answer: (B)

Nozzle pressure is the pressure at the nozzle outlet—the pressure the nozzle handles at the tip to produce the jet or spray you see. This value directly governs the flow pattern and reach, since it’s what the water actually experiences as it exits the hose. Typical values depend on nozzle type: smooth-bore nozzles usually run around 50 psi at the nozzle, while many fog nozzles operate closer to 100 psi to achieve a finer spray and fuller reach. This differs from pressure entering the pump from the source (supply pressure) and from residual pressure in the hose (pressure after some water has flowed and losses have occurred), as well as from the pump discharge pressure (the pump’s output before the water reaches the nozzle). The nozzle outlet pressure is the relevant measure for choosing nozzle type and predicting the flow and pattern you’ll get.

Nozzle pressure is the pressure at the nozzle outlet—the pressure the nozzle handles at the tip to produce the jet or spray you see. This value directly governs the flow pattern and reach, since it’s what the water actually experiences as it exits the hose. Typical values depend on nozzle type: smooth-bore nozzles usually run around 50 psi at the nozzle, while many fog nozzles operate closer to 100 psi to achieve a finer spray and fuller reach. This differs from pressure entering the pump from the source (supply pressure) and from residual pressure in the hose (pressure after some water has flowed and losses have occurred), as well as from the pump discharge pressure (the pump’s output before the water reaches the nozzle). The nozzle outlet pressure is the relevant measure for choosing nozzle type and predicting the flow and pattern you’ll get.