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Series 825Y "Y" Pattern 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: 175psi (12.1 bar).

The Febco series 825Y 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.

Irrigation systems supplied by domestic or private potable water systems are considered to be a potential pollution hazard to the water supply. These systems must include protection to prevent possible backflow of irrigation water into the potable water supply.

Irrigation Systems that are fueled either by private or domestic potable water supplies can cause contamination hazards to the water system. Federal Law requires these irrigation systems have a backflow prevention device installed to prevent backsiphonage of toxic or non-potable solutes into the water supply. We encourage you to check with your local water authority to learn installation requirements and codes.

First, consult your local codes and regulations for specific installation requirements and restrictions applicable to your area. The assembly should be installed in a horizontal position with the relief valve facing the side. It should be installed where it is accessible for periodic testing and maintenance, and where water spills are acceptable, whether by drainage or by nature of being outside. After installation, remember to slowly fill the RPZ with water and bleed air from the body through the third and fourth test cocks. If required, install the test cock plugs and tethers provided.

* B Dimension is less shutoffs. Weights shown are approximate. Dimensions shown are nominal, allowance must be made for normal manufacturing tolerances.

Series 825Y reduced pressure zone assemblies are used to protect against high hazard toxic fluids in water services to and from industrial plants, hospitals, morgues, mortuaries, and chemical plants. They also are used in irrigation systems, boiler feed, water lines, and other installations requiring maximum protection. In the case of irrigation systems, when connected to the water main, there is a high risk of contaminating the water for many people, dangerously creating hazards. An RPZ offers unparalleled protection against toxic hazards.

Winterizing an RPZ like the 825Y series backflow prevention device can be done in a similar manner to pressure vacuum breaker backflows. Simply shut off water to the device, depressurize it, drain it, then cover it in a backflow bag. Make sure the pipes around the RPZ are covered in pipe insulation and that the backflow has been thoroughly covered from the cold.

As a backflow device, your RPZ assembly is a crucial part of your irrigation system, though it can easily break under freezing situations. To prevent costly repairs or expensive replacements, winterizing your backflow can be an essential practice that can be done in 6 simple steps. First, turn off the water to the sprinkler system. Then you can close the inlet ball valve, but leave the outlet ball valve open. Remove any protective caps or covers from the test cocks and open the test cock 45°. Next, turn the ball valves both to a half-open position. Finally, use a backflow bag for extra protection.

Federal law requires a proper backflow device to be installed on any watering system to prevent contamination of the supply; whether it be pump or city water. Check your local water authority for installation requirements & codes. In many rural areas; specific requirements for landscape irrigation systems may not be covered in local plumbing codes and/or enforcement may be limited. HOWEVER...limitation in local authority does not alter the basic requirement for protection of the potable water supply.

Disconnect the assembly portion of the backflow from the unions, and install the new assembly in its place. Then reconnect the backflow, test for leaks, and call an inspector. It's often easier to replace the RPZ backflow like this than it is to repair a broken one.