The 1⅛″ FM Nozzle Inserts™ measure from 118-324 GPM.
Nozzle Inserts™ obtain flow-rates lower than what the 2.5″ orifice on the HM2H can accurately measure. They are required for flow-rates lower than 533 GPM.
FM Nozzle Inserts™ have achieved Factory Mutual approval for accurate flow rates when used with the 2½″ Hose Monster® (HM2H).
NOTE: Pricing on this website is for sales within North America and South America. Please contact us for global availability and pricing.