What is the recommended level at which pressure tanks should be kept?

Keeping pressure tanks at a level of 2/3 full is recommended to ensure optimal performance and longevity of the system. This level allows for a sufficient air cushion above the water, which is essential for maintaining adequate pressure and preventing cycling of the pump, which can lead to wear and tear.

The appropriate amount of water helps to balance the hydraulic system's requirements, ensuring that there is enough water available for immediate use while also maintaining an effective pressure differential. If the tank were kept too full, it could limit the air space necessary for effective pressure management and could lead to inefficient operation or even equipment failure over time.

Additionally, having the tank at this recommended level helps in accommodating for variations in water usage while also providing a buffer that prevents frequent cycling of the pump, thus enhancing its efficiency and lifespan.