A product overview of FirePro Monitors from Potter Roemer-FirePro, a member of Morris Group Internaitonal. Potter Roemer/ Fire Pro is the leading producer and supplier of firefighting and fire protection equipment. For more information, please visit www.firepromonitors.com

1. FirePro Monitors Product Overview

11. Question: Why is a single waterway monitor shaped the way it is? Answer: A single waterway monitor is shaped the way it is so the centerline of the nozzle passes through the centerline of both swivels. The reason for this is to eliminate any resulting torque about either swivel that would be produced by the jet reaction force of the nozzle. For a torque to exist, there has to be a reaction force AND a moment arm. Ensuring that the nozzle centerline passes through the swivel centerlines eliminates the moment arm, thereby eliminating the resulting torque. If a moment arm did exist, the torque to turn the monitor would dramatically increase. Waterways (cont.)

12. Question: Why is a single waterway monitor shaped the way it is? Answer: A single waterway monitor is shaped the way it is so the centerline of the nozzle passes through the centerline of both swivels. The reason for this is to eliminate any resulting torque about either swivel that would be produced by the jet reaction force of the nozzle. For a torque to exist, there has to be a reaction force AND a moment arm. Ensuring that the nozzle centerline passes through the swivel centerlines eliminates the moment arm, thereby eliminating the resulting torque. If a moment arm did exist, the torque to turn the monitor would dramatically increase. Waterways (cont.)

17. Typical fixed orifice flow rates * Pressure at Nozzle Inlet Flow Rate (GPM) Orifice Size @75 PSI* @100 PSI* @125 PSI* --------------- ---------- ----------- ------------- .500” 63 73 81 .625” 98 114 127 .750” 142 164 183 1.000” 252 291 326 1.250” 394 455 509 1.500” 567 655 732 1.750” 772 892 997 2.000” 1009 1165 1302