Crispin Air Release, Air & Vacuum and Universal Combination Valves meet or exceed ANSI/AWWA C512 Standards.
abbreviations used for product Compliance
Crispin’s original Air & Vacuum Valves, the A and AL Series are designed to exhaust large
quantities of air when filling pipelines, and to allow air to re-enter pipelines when draining to
prevent collapse due to vacuum formation.
NOMINAL INSIDE DIAMETER: 1/2”-24” Sizes Available (NPT or ANSI flanging)