What is a common cause of low sprayer pressure?

Worn nozzles are indeed a common cause of low sprayer pressure. Over time, nozzles can wear down due to friction and exposure to chemicals, leading to an increase in the size of the orifice through which the liquid is sprayed. This enlargement reduces the resistance in the sprayer system, causing a decrease in pressure as the liquid flows through the worn nozzle more easily.

In addition to affecting pressure, worn nozzles can also lead to uneven application of the spray material, which may compromise the effectiveness of pest control or fertilizer application. Regular maintenance and replacement of nozzles are essential to ensure the sprayer operates at optimal pressure and delivers the intended application rate.

The other causes mentioned, such as high viscosity of the liquid, improper calibration, and an incorrect pressure gauge, can contribute to pressure issues in different ways, but worn nozzles are a direct and frequent culprit for low pressure specifically when operating a sprayer.