Big Boy Hose Monster Test Kit - 100mm (4") NHT w/ Gauge

The Big Boy Hose Monster Test Kit is the ultimate solution for high-flow fire pump testing, offering unmatched accuracy, durability, and safety. This model features a 100mm (4") National Hose Thread (NHT) connection and comes complete with a precision pressure gauge for real-time monitoring.

Engineered for demanding field conditions, the Big Boy is built to handle extremely high water flows while minimizing turbulence and backpressure. It’s the trusted choice for fire protection professionals who need reliable, NFPA-compliant testing equipment that stands up to rigorous use.

Key Features:

• Perfect for Hydrant Flow Testing or Water Main Flushing.
• Uses the patented FM Approved Pitotless Nozzle™ so you’ll never have to change out a pitot because it got hit by a rock.
• Read your GPM flow-rate directly on the included gauge face while flowing.
• Weighs only 13 pounds yet handles high flow hydrants up to 2,759 GPM.
• 4″ NH standard connection size, other thread specs are available.
• Flow from 4.5”, or 5” STORZ connections with additional accessories.