What is the purpose of a pressure regulator, and why is it important?

• A. It controls the pressure—and, therefore, the quantity of spray flowing out through the nozzles; protects pump seals and hoses from damage due to excessive pressure
• B. It increases the temperature of the spray
• C. It changes the chemical composition
• D. It cleans the nozzle orifice

Answer: (A)

A pressure regulator keeps the spray system at a set pressure, which directly controls the flow through the nozzles. With stable pressure, you get a consistent flow rate and uniform coverage across the target area, so the amount of product applied per unit area is predictable. It also protects the equipment by limiting pressure spikes that can damage pump seals, hoses, and fittings. If pressure gets too high, parts wear or fail and drift or over-application can occur; if too low, the spray may not reach targets or may under-apply. Maintaining proper pressure thus supports accurate calibration, efficient product use, and safer operation.