Here's why:
1. Structural integrity: A pressure lower than 40 psi may not provide sufficient force to efficiently deliver water throughout the tank. This could lead to inadequate water pressure at the faucets and showerheads, affecting their functionality. On the other hand, excessively high pressure (above 60 psi) can exert undue stress on the tank and its components, increasing the risk of leaks or ruptures.
2. Appliance performance: Most household appliances, such as washing machines and dishwashers, require a specific range of water pressure for optimal performance. Typically, these appliances function well within the 40-60 psi range.
3. Safety considerations: Maintaining a proper water pressure is essential for safety reasons. If the pressure is too low, it can increase the risk of backflow, which occurs when contaminated water flows back into the clean water supply. Low pressure can also allow contaminants to enter the water system through small cracks or leaks. On the other hand, excessively high pressure can cause pipes and fixtures to burst, leading to potential injuries and property damage.
4. Plumbing code compliance: Many regions have plumbing codes that specify the acceptable range of water pressure for residential properties. These codes are designed to ensure the safety and longevity of water systems. By adhering to the recommended pressure range, you can avoid potential code violations.
It's important to note that these guidelines are general recommendations, and specific circumstances may warrant adjustments. If you have concerns or questions about the appropriate water pressure for your 12000-gallon tank, it's advisable to consult a licensed plumber for professional guidance.