4″ – 4 ½” Hose Monster

The 4” and 4 ½” Hose Monsters are designed for flow testing large-capacity systems and unidirectional flushing through the steamer/pumper port of a hydrant.

•    4″   FM Approved Flow range:  1,074 GPM to 2,941 GPM.
• 4 ½” FM Approved Flow range:  1,047 GPM to 2,867 GPM.

Both units are constructed of steel and include a precision-machined internal orifice plate for accurate and consistent flow rate measurements.  The rugged steel orifice plate means that a flow test will never be interrupted due to rocks and flushing debris damaging a pitot.

For thread specs not listed, call 888.202.9987 for availability