On traditional "bottom-up" automotive engine coolant systems, the lower hose runs to the water pump's suction side. As on any fluid system, suction results in negative pressure, aka vacuum. The higher ...

Fire pump primers may not be glamorous, but priming systems are critical to pump drafting performance. Pulling a prime quickly is key to fast water delivery, a basic fireground necessity. Last month, ...

Consider the consequences of a priming system malfunction or failure during a drafting procedure at a working structure fire. A delay in delivering water, or no water delivery at all, is likely to ...