A screen door closer works by using a pneumatic system to control the speed at which the door closes. This system relies on compressed air to create resistance.
Here's a breakdown of the process:
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Opening the Door: As you open the screen door, a piston inside a cylinder is forced back. This action compresses the air within the cylinder.
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Storing Energy: The compressed air acts like a spring, storing the energy you exert while opening the door.
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Controlled Release: A small valve or adjustable opening allows the compressed air to slowly escape from the cylinder.
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Closing the Door: As the air escapes, the piston is gradually pushed forward by the remaining compressed air, causing the door to close. The rate at which the air escapes controls the closing speed.
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Adjusting the Speed: A screw or dial on the closer allows you to adjust the size of the opening through which the air escapes. A smaller opening results in slower closing, while a larger opening allows the door to close more quickly.
Essentially, the closer uses compressed air to cushion the door's closing, preventing it from slamming shut. Pneumatic door closers are favored for screen doors and lightweight interior doors due to their simplicity, affordability, and effectiveness.
