AMTROL INC G12L EXPANSION TANK 4.4GAL (EA)

Thermal / hot water heater expansion tanks prevent hot water from back flowing into cold water line or from escaping through the pressure relief valve and onto the floor. Prevents constant fluctuations in water pressure that damage the heater and associated piping. National plumbing code mandates installation when a backflow preventer is present.

Accepts expanded water as system temperature rises due to thermal expansion and returns hot water to system when demand occurs

Required by most building codes where backflow preventers are specified

Prevents dripping faucets, intermittent toilet fill and pressure relief valve discharge

Protects water heater, appliances and fixtures, prevents dangerous pressure buildup

Eliminates wasted energy and water, save money and conserve water

Butyl diaphragm for long life

Deep drawn steel domes for maximum strength and pressure rating

Rigid polypropylene liner for corrosion resistant reservoir

Welded steel construction welded air charge fitting with protective cap for corrosion resistance and an air-tight seal