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The TACO PAX30-150P is an NSF-certified expansion tank designed for use in potable water systems. It accommodates thermal expansion caused by water heating, protecting system components from pressure buildup that can damage valves, water heaters, and piping. The NSF certification indicates the tank meets standards for contact with drinking water, making it suitable for closed domestic water systems. This type of tank is a standard component in residential and light commercial plumbing installations where a check valve or backflow preventer creates a closed system.
This expansion tank is intended for potable water applications, including domestic hot water systems served by tank-style or tankless water heaters. It is commonly installed on the cold water supply line near the water heater in residential and light commercial buildings. Plumbing codes in many jurisdictions require thermal expansion control on closed plumbing systems, and a tank of this type is the standard solution. Installation is typically performed by a licensed plumber during new construction or water heater replacement.
Designed as an OEM-style replacement or new-installation expansion tank for closed potable water systems requiring NSF-certified components.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and relieve system pressure before installing or replacing the tank. Pre-charge the tank air pressure to match system pressure before connecting. Do not install on non-potable or open-loop systems where NSF certification is not the applicable standard.
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