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Series 7F-AUS
Sizes: DN80 - DN250
When fitted with metered bypass, the valve is designed
to operate in a normally closed position with the meter stopped. The spring
load prevents the main check from opening, thus forcing all low flows
throught the metered bypass assembly. This serves to detect leakage or
theft of water from the fireline system. In the event of fire, increased
flow demand opens the main check allowing full flow through both the main
check and the bypass.
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