Air Check Valve
The Air Check Valve in a hot tub air blower serves a crucial role in maintaining the functionality and longevity of the blower system. Here’s a detailed explanation of its use, purpose, and need:
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Use: The Air Check Valve is installed in-line between the blower and the spa air plumbing. It only allows air to travel one way down the pipes and opens when the blower is switched on. When the blower stops, the valve closes.
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Purpose: The primary purpose of the Air Check Valve is to prevent water from entering the blower and damaging the coil and motor. Some spas have additional valves in the main plumbing line to allow for servicing of equipment without the need to drain the spa.
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Need: The Air Check Valve is essential for hot tub blowers, especially those installed below the water level. Without it, water can enter the air pipes when the blower is not running, which can lead to blower failure. The valve also stops water from backing up into the housing and damaging the motor.
In addition to the Air Check Valve, some hot tubs use a loop in the plumbing above the water line inside the cabinet, known as a Hartford Loop. This loop forms an air pocket at the highest point, preventing most water spillover. Together, the Air Check Valve and the Hartford Loop provide a robust defense against water intrusion, protecting the hot tub air blower and ensuring a longer lifespan for the equipment.