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R <br /> R UA <br /> Is. <br /> 3, 4 and 6-inch CREST METERS 1 /8"', 3/8" and 3/4" VLF METERS <br /> Green Seal Crest Meters are turbine type Neptune industrial <br /> meters. They are used primarily for water and can be <br /> furnished to handle temperatures as high as 240°F <br /> throughout the recommended range of flow. They are <br /> particularly suited for various industrial water operations, <br /> such as those found in boiler-water treatment and cement <br /> manufacturing. j <br /> The Green Seal Crest,featuring a heavy bronze main casing, <br /> operates on the velocity principle, with its single, 1♦ " ' ' " <br /> hydraulically balanced turbine being rotated by the water <br /> passing through the meter. } <br /> The measuring wheel is molded of a durable, high-impact <br /> plastic and rotates on a stationary phosphorbronze shaft. <br /> The bushings are graphite. The contoured design of the <br /> turbine cage assembly creates a venturi effect and produces <br /> axial balance of the turbine rotor.This feature,coupled with <br /> the polished jewel thrust bearings at each end of the turbine VLF4 VLF8' <br /> shaft, ensures turbine sensitivity and reduces wear to a (1/8") (3/8") <br /> negligible minimum. <br /> SPECIFICATIONS <br /> FLOW RATE The Neptune line of VLF Low Flow Meters is designed to <br /> 3"-35 to 350gpm measure light fuel oil or diesel oil. Offered in three sizes, <br /> 4"-64 to 604 0 g 1/8", 3/8", and 3/4", flow can be measured at rates from <br /> 6"—TIN 140 1PR gpm .25 to 390 gph. Accuracy is + 1%; repeatability, + 1/4% <br /> OPERATING PRESSURE — — <br /> 3"-125 psi The register unit of the VLF8 works accurately in a vacuum <br /> 4"-125 psi sealed casing. It is absolutely secured against dirt,dust and <br /> 6"-125 psi condensation. <br /> OPERATING TEMPERATURE <br /> 3`•-240OF The VLF meter can be mounted in any flow direction,but the <br /> 4"-240'F dial must either face upwards or not more than 90' to one <br /> 6"-240'F side. <br /> Machined to close tolerances (±.0006), these precision <br /> instruments are particularly sensitive to foreign matter. <br /> There is a fine filter built into the inlet but,should the liquid <br /> being metered contain foreign matter, it is recommended <br /> that a screen or removable filter of appropriate size be fitted <br /> on the inlet side.The filter mesh should not be larger than 50 <br /> micron for the 1/8"and 3/8"meters,or 100 micron for the <br /> 3/4" meter. <br /> SPECIFICATIONS <br /> FLOW RATE <br /> 1/8"--.25 to 8 gph <br /> 3/8"-1-1/16 to 40 gph <br /> 3/4"-6 to 390 gph <br /> OPERATING TEMPERATURE <br /> 1/8"-125'F <br /> 3/8"-140'F <br /> 3/4"-260'F <br /> OPERATING PRESSURE <br /> 10 1/8"-225 psi <br /> 3/8"-225 psi <br /> a 3/4"-226 psi <br /> DIAL REGISTRATION <br /> 9 ° t 6. <br /> 1/8"-01 USG <br /> 3- 3/8"—.01 USG <br /> o <br /> 3/4"—.1 USG <br /> o 150 300 450 GM 730 900 1050 1300 1430 160o <br /> FLOW RATE—GPM <br /> WATER <br /> 9 <br />