Monthly Archives: May 2014

Fire Pump Testing Part II – Hose Valve Manifold vs Flow Meter

This blog is the finale of our two-part series, where we continue discussing the testing of fire pumps, and we now switch our focus to the use of a flow meter device. In our second half of the series we’ll dive into the advantages and disadvantages to using flow meters instead of the hose manifold method, which was discussed in part one of our series.

The use of flow metering devices in fire pump installations has been gaining popularity over the years. Flow meters are devices installed in a water pipe that, if installed properly and in accordance with the manufacturer’s instructions, will provide a visual reading of water flowing at any given moment. By holding a set flow by use of a downstream throttling valve, a large gauge will illustrate the specific flow. Many people prefer to use flow meters in a return loop from the discharge of a fire pump back to the suction of the fire pump. By doing so, they are recirculating all of the water and allow for measurement of water flow all in one place — the mechanical room. While it is possible to use flow meters in any location desired, for the purpose of this article we will address flow meter installations in the common recirculating return loop. Continue reading