2 Gallon Accumulator Expansion Tank With Wall Mount Bracket 1/2" Female NPT

2 Gallon 1/2" Female NPT Custom Wall Brackets Included Max Liquid Pressure: 130 PSI Pre-Pressurized Air: 30 PSI Applications: Used on gas, oil, or electric, direct-fired, residential water heater, and potable water storage applications to absorb the increased volume of water created by thermal expansion.