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- #58,757 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
- #98 in Automatic Irrigation Sprinkler Heads
Product Description
The manual anti-siphon valve features a combination of an inline forward flow valve and an atmospheric vacuum break which prevents water flowing from the irrigation system into the culinary system. This type of valve is most common in California. In other states it is common for a single backflow prevention device to protect the entire system at the mainline point of connection. In order to function properly, an anti-siphon valve should be installed at least 12 inches above the highest head in the zone which it controls. This typically requires the anti-siphon valve to be installed above-ground on risers. The anti-siphon valve features an easy-to-rotate flow control handle. We recommend that you use a steel sprinkler key for hard-to-reach places and PVC-Lock fittings for fast, glue-free installation. For outdoor irrigation use with cold water only.
From the Manufacturer
The Brass Anti-Siphon Control Valve is designed to prevent contaminants from entering the main water supply. It has a heavy-cast brass body and makes precise flow adjustments.
PaSu
Reviewed in the United States on February 7, 2025
Perfect! Exactly what I needed. Good price and fast delivery. Very happy.
jz
Reviewed in the United States on January 3, 2025
need a replacement so run to homedepot but couldn't find it in store. found this online and got the replacement, great quality and works perfectly.
Customer
Reviewed in the United States on July 12, 2024
Did exactly what I needed for it to do.
G l
Reviewed in the United States on June 14, 2024
Priced well ,good product and easy install for system
Michelle M
Reviewed in the United States on October 7, 2024
I'm going to use this product to replace the same exact valve that was used to control the fill on my pool.
Jene St Pierre
Reviewed in the United States on October 21, 2024
Great thank you
Federico
Reviewed in the United States on October 18, 2024
used this replace a 30 year faucet. turned out well. well built..
Jason Heiss
Reviewed in the United States on September 30, 2008
Seems like a really well built valve for the price. I bought one to replace a nearly identical valve that feeds our pool filling line. The only difference is that the old valve had a union built-in on the output side. Not sure how long the existing valve had been there, but probably at least 20 or 30 years. The anti-siphon valve died on the existing valve, so water just spewed out of the anti-siphon cap and I couldn't get it to unscrew to see if the valve was repairable. Anyway, this thing feels very solidly built and seems to work like you'd expect. My only complaint would be that the handle is somewhat hard to turn by hand, as it is designed to be turned by one of those .
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