ASSE 1013-2026/CSA B64.4:26
Reduced Pressure Principle (RP) Backflow Prevention Assemblies

ANSI Approved: February 2026

This Standard covers reduced pressure principle (RP) backflow prevention assemblies (herein referred to as the “assembly”) that are used in potable water supply systems to prevent cross-connections.

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A hard copy version of this standard is also available.