Description Specifications Literature Description Features:Low minimum operating pressureClose ON-OFF differentialEase of adjustabilityIn line 180 degree portingMonitors gases or liquidsConfirms: Normal flow conditionsSenses: High flow or low flow conditionsWater or explosion proof coversOutput:Switch contactMaterials: 316SS, brass, teflonApplications:Wet stationsShipboard water systemsCVD furnaces cooling waterBiomedical instrumentsVacuum systemsCoolant failure alarmOperations:With no flow present, the magnetic piston rests on the bottom of the bypass bore. When flow is established the piston is forced upward by the bypass flow and actuates the reed switch. The bypass flow is controlled by manual adjustment of the flow control vane. When flow decreases the piston moves downward and the reed switch deactuates.Acutation points for air at 68° F and 14.7 psia with increasing flowDeactuation (decreasing flow) averages 10% less than actuation (increasing flow)Repeatability ± 2%Unit will pass greater flows State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Body MaterialMax Working Pressure PSIG (barg)Wetted PartsSealTeflon®80 (5.51)Teflon®TFE®Brass1500 (103.42)Brass, EpoxyViton®316SS3000 (206.84)316SS, EpoxyViton®Calibration RangeModelAir SLPM (SCFM)Water LPM (GPM)Ports FPNT500-BP Minimum6 (0.20)0.11 (0.03)1/2"Maximum991 (35)15.14 (4) 500-BPHF Minimum23 (0.80)0.38 (0.10)1/2"Maximum2124 (75)37.85 (10) Pressure Loss TableModelWater Flow Rate LPM (GPM)ΔP to Atmosphere BARD (PSID)84.9 (3)3.8 (1)17.2 (0.25)556.3 (20)15.1 (4)51.7 (0.75)1557.4 (55)30.3 (8)233.0 (3.38)1925.5 (68)37.9 (10)362.0 (5.25)2265.3 (80)64.4 (17)517.1 (7.50) Literature & Docs Spec Sheet Accessories