Resideo TX-5 Tank

The Resideo TX-5 is a high-performance thermal expansion tank engineered specifically for closed potable water systems. As a veteran technician knows, when a backflow preventer or check valve is installed, the water heater essentially becomes a closed loop; without a potable water expansion tank, thermal expansion during the heating cycle can cause dangerous pressure spikes and frequent T&P relief valve discharge. This 2-gallon steel tank serves as the critical pressure absorber, featuring a heavy-duty, FDA-approved butyl diaphragm that completely isolates system water from the air cushion to prevent waterlogging and maintain steady line pressure.

Designed for durability in demanding residential applications, the TX-5 utilizes a non-corrosive polypropylene liner and a brass-reinforced 3/4" MNPT connection to ensure a 100% non-metallic water reservoir, protecting the integrity of the potable supply. With a factory precharge of 40 psi and a maximum operating pressure of 150 psi, this unit effectively mitigates water hammer and prevents excessive pressure cycling that can lead to premature failure of the water heater and downstream plumbing fixtures.

Key Benefits:

• System Pressure Control: Eliminates relief valve spillage by absorbing expanded water volume during heating cycles.
• Superior Contaminant Isolation: Heavy-duty butyl diaphragm and polypropylene liner prevent internal corrosion and maintain water quality.
• Robust Construction: Welded steel shell with a 150 psi maximum working pressure rating for high-demand environments.
• Ease of Integration: Features a standard 3/4" MNPT brass connection for seamless installation on the cold water inlet.
• Internal Protection: Safeguards water heater tanks and plumbing fixtures from fatigue caused by rapid thermal expansion.

Common Questions:

• Does the precharge need adjustment? Yes, for proper operation, the air precharge should be adjusted to match the static city water supply pressure before the tank is pressurized with water.
• Can this be used for hydronic heating? No, the TX-5 is specifically for potable hot water expansion; hydronic systems require specialized tanks designed for higher temperatures and oxygen-free environments.
• Where should the tank be installed? It must be installed on the cold water supply line between the water heater and the backflow preventer or pressure-reducing valve.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.