Operating conditions and materials. Liquids: Chemically neutral, lubricative, clean, non-abrasive, Screws: Steel, nitrided. Bearing: Steel bearing,hybrid ball bearing. Seal: Viton (other sealing materials on request). Signal: PNP or NAMUR. Bi-directional: Optional with sensors for fl ow direction detection Specification; Nominal diameter NPT 4",ANSI Class 150-4",ANSI Class 300-4" Flow rate; Qmax 790GPM Qrate 525GPM Qmin 5,25GPM Pressure max 600Psig Temperature -40 to 400 °F Viscosity 1 to 1x10x10x10x10x10x10 mm2/s Accuracy ± 0.1% of measured value K-factor K1;63,6 pulses/gal,K2;127pulses/gal,K3;218pulses/gal. Frequency f1;557 f at Qrated Hz,f2;1,111 f at Qrate Hz,f3;1,908 f at Qrated Hz Weight NPT 4" 154Lb Weight ANSI Class 150-4" 165LB Weight ANSI Class 300-4" 184Lb
