A Comparison of Single and Double Chamber Air Release Valves
Why do so many single chamber air release valves fail?
This video demonstrates a range of testing of both single and double chamber air release valves and proves conclusively the advantage of the VS-4 Smartvalve.
|Floats and seals protected from solids||No||Yes|
|Seals at atmospheric pressure||No||Yes|
|Positive buoyancy of floats||0.6 to 2 lbs||4.4 lbs|
|Can be easily serviced on-site||No||Yes|
|Guaranteed anti-hammer air chamber||No||Yes|
|Multiple valve ports to a single upstand
(2 or 3 x airflow)
|No exposed poly or plastic parts||Some||All stainless steel|
|316 stainless steel construction||Some||Yes|
|Extra long service intervals||No||Yes|
VS-4 Smartvalve brochure
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