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 6",ANSI Class 150-6",ANSI Class 300-6" Flow rate; Qmax 2000GPM Qrate 1300GPM Qmin 13GPM Pressure max 600Psig Temperature -40 to 400 °F Viscosity 1 to 1x10x10x10x10x10x10 mm2/s Accuracy ± 0.1% of measured value K-factor K1;33,5 pulses/gal,K2;67pulses/gal,K3;83,7pulses/gal. Frequency f1;726 f at Qrated Hz,f2;1,452 f at Qrate Hz,f3;1,813 f at Qrated Hz Weight NPT 6" 419Lb Weight ANSI Class 150-6" 397LB Weight ANSI Class 300-4" 461Lb