What is required for proper installation of a backflow prevention device?

For proper installation of a backflow prevention device, it is essential that it is placed at least a few inches above the highest discharge point. This requirement is critical for ensuring that the device functions effectively to prevent backflow, which is the undesirable reverse flow of water that can contaminate the public water supply. By positioning the backflow prevention device above the highest discharge point, you create a physical barrier that makes it more difficult for backflow to occur, working in concert with the gravitational force acting on the water.

This installation height is in line with industry standards and regulations aimed at safeguarding potable water systems. It prevents any potential siphoning of contaminated water back into the clean supply line, thereby protecting public health and safety.