Orbit 1-Inch Anti-Siphon Control Valve 51023P

The manual anti-siphon valve is a combination of an inline forward flow valve and an atmospheric vacuum break, which prevents water from the irrigation system from flowing into the culinary system. This type of valve is most commonly found in California. In other states, it is more common for a single backflow prevention device to protect the entire system at the mainline point of connection. To function properly, an anti-siphon valve should be installed at least 12 inches above the highest head in the zone it controls, typically requiring it to be installed above-ground on risers. The anti-siphon valve features an easy-to-rotate flow control handle, and it is recommended to use a steel sprinkler key for hard-to-reach places and PVC-Lock fittings for fast, glue-free installation. These valves are designed for outdoor irrigation use with cold water only.

Anti-Siphon Control Valves are designed as sprinkler control valves and to prevent contaminants from entering the main water supply through sprinkler heads. They combine a manual irrigation valve with an atmospheric vacuum breaker, allowing for the control of water flow while also protecting the culinary water system. The valve features a flow control that can be operated by hand or with a sprinkler key, and the atmospheric vacuum breaker has a reliable poppet and seal design. These valves are compatible with controllers from major brands, such as Orbit and Hydro-Rain.

The manual anti-siphon valve's key feature is its ability to prevent water from the irrigation system from flowing back into the culinary water system. This is achieved through the combination of an inline forward flow valve and an atmospheric vacuum break. This type of valve is particularly common in California, where it is a standard solution for protecting the main water supply. In other states, a single backflow prevention device is often used to protect the entire system at the mainline point of connection.

To ensure proper functioning, the anti-siphon valve must be installed at least 12 inches above the highest head in the zone it controls. This typically requires the valve to be installed above-ground on risers, as it needs to be positioned at the appropriate height. The valve features an easy-to-rotate flow control handle, allowing for convenient adjustment of water flow. For hard-to-reach areas, the use of a steel sprinkler key is recommended, while PVC-Lock fittings enable a fast, glue-free installation.

These valves are designed specifically for outdoor irrigation use with cold water. They serve two primary functions: controlling the flow of water and preventing contaminants from entering the main water supply through the sprinkler heads. The combination of a manual irrigation valve and an atmospheric vacuum breaker achieves this dual purpose, making the anti-siphon valve a reliable and essential component of outdoor irrigation systems.

The valves are compatible with controllers from major brands, such as Orbit and Hydro-Rain, ensuring seamless integration with various irrigation systems. This compatibility allows for precise control and management of the water flow, further enhancing the effectiveness of the anti-siphon valve in protecting the culinary water system.

product information: