Quick Connect Filter For Use With Steam Treatment Systems Reduces Scale Micron Rating 0.5 micron Flow Rate 6 gpm Diameter 5 1/8 in Overall Height 12 1/2 in Service Life 500 gal Filter Media HydroBlend Polyphosphate Maximum Temperature 100 Degrees F Application Steam Equipment Standards NSF 42 Series SR-X Features Unit Dispenses a Controlled Amount of Hydroblend(TM) Polyphosphate Compound for Greater Effectiveness Compared to Standard Phosphate Treatments Maximum Pressure 125 psi