ASSE/ANSI 1011-2023
Performance Requirements for Hose Connection Vacuum Breakers

ANSI Approved: April 2023

Hose Connection Vacuum Breakers provide protection of the potable water supply against pollutants or contaminants that can enter the system through
backpressure equal to the force created by an elevated hose from 6.0 inches (15.2 cm) to 10.0 feet (3.0 meters) in height and backsiphonage through the hose threaded outlets. This standard applies only to those devices designed to be installed on the discharge side of the hose bibb, hydrant, or faucet which is fitted with hose threads.

A downloadable version of this standard is also available.