Metering and vernier metering valves Bellows Shut-Off valves - QUALIFLOW - #1

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Metering Bellows Shut-Off Valve Vernier Metering Bellows Shut-Off Valve Features Body design : • Various Fitting configuration. • Standard Moduline dimensions. • All tube connection are butt welded. • Metering position lock system for the Vernier Metering Valve. Materials : • Body and Bellows in 316 L Stainless Steel. • Square gasket in PTCFE. • Seat in PCTFE (Kel.F¤). Verification and Packaging • 100% inspection with boroscope. • Vacuum sealed double packaging with N2 purge. • Individual Calibration Certificate. • Plastic Plugs on fitting. Ratings Number metering turn ....................................................................... 16 Number metering turn for theVernier Valve.................................... 10 Dead volume :........................................................2.0 cm3 ( 0.12 in3). Temperature Gas Temperature : ......................................................-40°C to 150°C. Ambient Temperature : .................................................-20°C to 90°C. Pressure rating Vacuum to 10 bar ( 145 psi ). Helium Leak Rate : Individually tested less than 2.10-9 atm cm3/s. Accuracy Accuracy for the Vernier Valve................................................ 3 digits Repeatability Repeatability for the Vernier Valve .................................. +/- 1% F.S. Valves and Accessories www.qualiflow.com the catalogue D 10-03 V02