Series FE825YA Small Footprint “N-Shape” Design Reduced Pressure Zone Assemblies are used to protect against high-hazard (toxic) fluids in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants. They are also used in irrigation systems, boiler feed, water lines, and other installations requiring maximum protection. They feature a bronze body and threaded ball valve shutoffs. Maximum Working Pressure: 175 psi (12.1 bar).

Series FE825YA Small Footprint “N-Shape” Design Reduced Pressure Zone Assemblies are used to protect against high-hazard (toxic) fluids in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants. They are also used in irrigation systems, boiler feed, water lines, and other installations requiring maximum protection. They feature a bronze body and threaded ball valve shutoffs. Maximum Working Pressure: 175 psi (12.1 bar).

Estimating the expansion coefficient from the difference between the cold system water temperature and the max working temperature.

The first step is to estimate the expansion coefficient using the table and chart below. The x-axis displays values representing the difference between the cold system water temperature (when the heating is off) and the maximum working temperature. On the other hand, the y-axis displays the corresponding expansion coefficients.

Expansion tanks come in a variety of sizes. Selecting the appropriate size depends on several factors, such as water pressure, the total water capacity of the system, and the temperature of the water entering and exiting the system. Using these parameters, the recommended standard size is usually determined through charts or software.

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