Backflow preventer installation height

If an assembly is installed pursuant to Ordinance 1227 subsection (a and is four (4). Some assemblies, such as RPaposs, have key minimum height requirements to ensure that the relief valve will not be submerged. BAVCO - FAQ - Installing Backflow Prevention Assemblies Since backflow preventers must be periodically service it is important that the backflow preventer be installed where it is easy and safe to get at or around it for maintenance or testing. If the Director grants written permission to install the backflow assembly inside of a building, the assembly shall be readily accessible between 8:a.m.

The height at which the assembly is installed in relation to the surrounding grade is also important.

Installation Requirements Guidelines WaterOne

A reduced pressure zone (RPZ) backflow preventer must generally be installed foot above the 1year flood plain elevation. Does the facility need a continuous water supply? Installation Requirements Guidelines WaterOne Install with a minimum of (inch) clearance in all directions around the assembly and a minimum of (inches) clearance in front of the assembly, where testing and repair are performed. The elevation and location of the 1year flood plain in relation to the facility.

Pressure Vacuum Breaker (PVB) Must meet the additional requirements of (inches) above the highest point of water use downstream of the backflow preventer. Measure how long you need the stub up length. British Standard Pipe Taps - m Interstate - BSPP, Flutes, Plug Chamfer, Bright Finish, High Speed Steel British Standard Pipe Tap - 6Shank Diam, Square Size, Overall Length.

Guidelines for Designing Backflow Prevention Assembly

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