Anti-siphon valve with freeze protection

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United States of America Patent

PATENT NO 9894853
SERIAL NO

15357997

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Abstract

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An anti-siphon system for use with an irrigation system, such as lawn sprinkling system is disclosed. The system includes a backflow prevention valve with a bonnet- and poppet valve system with a conical spring that biases a lower poppet valve head, and engages the valve body. The use of the conical spring simplifies the mechanism, while providing reliable backflow prevention.

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Patent Owner(s)

Patent OwnerAddress
TOWSLEY BRYAN LNot Provided

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Towsley, Bryan L Berthoud, US 5 67

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