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Lf009m2qtair gap

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Wattslf009m2qtManual

Without a working temperature and pressure (T&P) relief valve in place, a water heater can explode, causing property damage, severe injury or death. Every hot water heater, gas or electric, tank or tankless, is required by law to have a correctly functioning (T&P) relief valve. This crucial valve allows water or steam to escape from the water heater if the water temperature is too hot or the pressure is too high. T&P valves open when the pressure reaches 150 pounds per square inch (psi) or when the temperature reaches 210 degrees Fahrenheit.

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Water heaters are equipped with thermostats and electric water heaters have overload switches, but the T&P valve is the only protection against explosions and damage from both excessive temperature and high pressure. These conditions can occur - without warning - when  an agency or municipality raises its water pressure or if the water heater malfunctions.

Watts 0391005 1-1/4" LF009M2QT Zone Assembly. The Reduced Pressure Zone Assemblies prevent reverse flow of used or dirty water from entering back into the water supply. Back siphonage and backpressure can occur from time to time and this Backflow Preventer is one of the best products to avoid those things from occurring. The 909 series all feature Silicon Alloy body construction, bronze ball valve shutoffs, and bronze test cocks. Series LF009 also features an air in and water out design principle for protection during emergency combined back siphonage and backpressure conditions.

General County Information (858) 694-3900 2-1-1 San Diego Board of Supervisors Department Contacts Media Information

In addition to a correctly functioning T&P relief valve, the overflow pipe attached to the T&P relief valve needs to be rated to withstand excessive temperature and pressure. The pipe material must be rated to withstand 150 psi and 210 degrees Fahrenheit, and may be copper (preferred), galvanized steel or CPVC, NOT standard PVC.