Which of the following is included in the pump unit assembly of a handheld sprayer?

Which of the following is included in the pump unit assembly of a handheld sprayer?

• A. A handle, tank cap, gasket, pump rod, plunger cup and check valve
• B. A nozzle, trigger, hose, and battery
• C. A wand, tip, container, and switch
• D. A gauge, filter, seal, and receiver

Answer: (A)

The pump unit is the part of a handheld sprayer that creates and maintains fluid pressure through the pumping action. This assembly includes the handle to operate the pump, the tank cap and gasket to seal the reservoir, the pump rod to move the piston, the plunger cup to form the piston seal, and the check valve to allow one-way flow and prevent backflow. These components work together to generate and maintain the pressure needed to push liquid out through the spray path. Items like a nozzle, trigger, hose, and battery belong to the spray path and power source rather than the pump itself; a wand, tip, container, and switch relate to the spray wand and control interface; and a gauge, filter, seal, and receiver are part of measurement, filtration, or other subsystems not central to the pumping action.

The pump unit is the part of a handheld sprayer that creates and maintains fluid pressure through the pumping action. This assembly includes the handle to operate the pump, the tank cap and gasket to seal the reservoir, the pump rod to move the piston, the plunger cup to form the piston seal, and the check valve to allow one-way flow and prevent backflow. These components work together to generate and maintain the pressure needed to push liquid out through the spray path.

Items like a nozzle, trigger, hose, and battery belong to the spray path and power source rather than the pump itself; a wand, tip, container, and switch relate to the spray wand and control interface; and a gauge, filter, seal, and receiver are part of measurement, filtration, or other subsystems not central to the pumping action.