Smart irrigation design is crucial for long-term health of your landscaping and plants. This will prevent contamination which could cause illness. Installing an irrigation system is crucial. This is a brief overview of back-flow preventers and how they work.

All about Back-flow Prevention

The Uniform Plumbing code requires that irrigation systems be approved for back-flow preventions. These devices prevent water contamination from Long Beach’s public water supply.

Back-flow refers to water flow that is reversed by inadvertent actions. This happens when water systems are connected to irrigation methods.

Back-flow can cause herbicides, fertilizers, and other harmful substances to be released from the irrigation system into public drinking water supplies. Back flow in irrigation systems can be caused by back pressure or back siphonage.

Back pressure is when the system pressure exceeds that of the source line. Back siphonage occurs when water is drawn backwards by a decrease in pressure or overall negative pressure on its water supply side. This could lead to contaminated water being drawn to the source via sprinklers and other emitters.

There is a variety of back-flow prevention devices in Long Beach, CA.

Atmospheric vacuum breakers These valves provide the highest level of security and back-flow preventions.

They should be installed at the irrigation system’s facet, at least six feet from the highest emission stage. Once it is depressurized, it will fall to allow air to flow back into downstream pipes.

Pressure vacuum breaker: A PVB (or Pressure Vacuum Breaker) is the next level up from AVB. It has a spring loaded check valve that opens when water stops moving. An air relief valve is available to prevent the siphon being broken when pressure drops below 1 psi.

Double-check valve assembly The DCV is a double-check valve assembly that has two spring-loaded check devices.

Low pressure assembly These devices offer the most protection against back flow.