Key features

• •Dual O-Ring Leak Resistant Air Valve: Our expansion tank features a leak-resistant air valve with double O-ring seals, designed to help reduce pressure loss and leakage in thermal expansion systems.
• •Food-grade Materials: The thermal expansion tank features a 3/4" MNPT connection constructed of food-grade type 304 stainless steel. Also, The expansion tank diaphragm is fabricated from food-grade EPDM rubber, ensuring compatibility with potable water systems.
• •Thick-walled & Handles High Pressure: This water expansion tanks feature thick-walled carbon steel construction with factory test pressure rating of 207 PSI. Handles water hammer impact and cyclic pressure fluctuations (e.g., pump start/stop cycles). While factory-tested to 207 PSI, our expansion tanks require operating pressures ≤150 PSI for sustained safety and service life.
• •Enjoy Consistent System Performance: Our expansion tank is designed to manage pressure increases caused by thermal expansion, helping to maintain pressure below the water heater relief valve setting. This function supports the reduction of relief valve discharge and helps mitigate water hammer effects in piping systems. By doing so, it contributes to the protection of your plumbing and water heater.
• •For Various Water System Applications: This expansion tank ideal for modern, high efficiency systems including well water systems, hot water systems, solar thermal systems, marine, RV water systems and other water applications.