Back flow Devices Need to be Tested at Full Flow
Backflow devices are intended to prevent that nasty sprinkler water from going into your drinking water. These devices need some tender loving care in order to operate efficiently and test must be conducted to ensure they can open to meet the system demand. In the 2002 edition of National Fire Protection Association (NFPA) 13, Standard for the Installation of Automatic Fire Sprinkler Systems, a testing requirement was added for the forward flow testing of back-flow devices.
In fire protection systems, the back flow device is installed below the system control valves and can be the cause of reduced flow for the system. Reduced flow can occur if the system is not properly designed to include the device or tested to ensure the system flow is not reduced. The [click to continue…]
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