You're in the shower, doing your best imitation of a Top-40 pop star. Suddenly that warm, relaxing shower turns too hot to handle, causing you to jump back to avoid the scorching water. The cause? Someone in the house has flushed a toilet. If the situation sounds familiar, then you need to install a pressure-balance valve in your shower.
These pressure-balancing devices prevent "shower shock" by automatically adjusting for temperature fluctuations whenever water?cold or hot?is diverted from the tub or shower, such as when someone starts up a load of laundry or flushes a toilet. Even in an instance when the water pressure drops drastically, a pressure-balance valve ensures that the water temperature doesn't change by more than 3° F.
Antiscald devices have been required in hospitals and nursing homes for decades. Now, 31 states have enacted, or will do so soon, legislation requiring pressure-balance valves in all residential remodeling and new-construction projects.
Antiscald devices are a wise investment. According to the Consumer Product Safety Commission, each year some 200,000 Americans suffer injuries caused by sudden changes in water temperature while they're bathing. Everyone is in danger of getting scalded or falling as they try to escape the hot water, but young children, the elderly and the physically challenged suffer the most injuries.
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source: thisoldhouse.com
www.guaranteedplumbing.com
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