How it works: Inside a paint sprayer

Photograph by Philip Friedman
Date:5 August 2012 Tags:,

Black & Decker’s 2-speed quick clean sprayer introduces two innovations that make painting everything from fences to sheds quicker and easier than ever. Here’s how it works.

Most sprayers require the operator to remove a canister and fill the reservoir from the top, which often leads to paint dripping from the draw tube and making a mess. Black & Decker’s tool has a side-fill canister, which allows for quick, clean refilling.

Set the flow knob to the desired intake – the higher the number, the greater the amount of paint sucked up and pushed out of the system – and switch on the machine; this kicks the solenoid motor into action.

The motor drives a piston inside the sprayer at up to 7 200 pulses per minute, creating suction that pulls paint up through the draw tube.

The paint travels past the piston to the atomiser valve, which moves in a swirl pattern to break up the paint for spraying.

Finally, the paint moves through the spray tip – choose between horizontal, vertical and round spray patterns – and coats the surface.

To clean the machine without taking it apart, simply pour water into the upper reservoir, flip the switch from paint to clean, and spray.

PM’s Roy Berendsohn on when to spray it and when to brush it
Brushing is great in small spaces and on long narrow surfaces, such as trim or the corner where the wall meets the ceiling. A sprayer produces a high-quality finish – on kitchen cabinet doors or furniture, for instance – and is also a good choice for rough, weathered wood surfaces that can snag a brush or roller’s fibres.


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