Unusual Backflow Device Installation

Back in the early 1970s when the cross connection program was in its infancy, rules and regulation were still being ironed out. It was the wild wild west of the cross connection era.

This backflow device was installed in 1971. It does not meet modern standards or regulations: 1) It is not testable; 2) A PRV & a Wye strainer have been installed between shut off valve #1 and the check valve assemblies.

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