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ASSE Standard #1053-2004 (Download)

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Performance Requirements for Dual Check Backflow Preventer Wall Hydrants - Freeze Resistant Type

These devices provide protection of the potable water supply from contamination due to backsiphonage or backpressure without damage to the device due to freezing, and is field testable to verify protection under the high hazard conditions present at a hose threaded outlet. This device shall only be used on systems where the low-head backpressure does not exceed that generated by an elevated hose equal to or less than 10 feet (3 m) in height, and are not subjected to continuous water pressure.


THERE IS AN ERRATA SHEET ISSUED FOR THIS STANDARD.
Visit www.asse-plumbing.org/downloads/errata.html to view and download.

Products downloaded are not to be reproduced or distributed in any way.

A hard copy version of this standard is also available.  

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