The CMV range of stainless steel needle valves, developed by Chell Instruments, provide the finest gas flow control over typical ranges of 0-20, 0-1000 & 0-3000 std. cm3min-1 air at 1bar differential pressure. Designed for use in pressure or vacuum applications, they are ideal for mass spectrometers, gas chromatographs and gas analysers and blenders – in addition to any application where ultra-fine control is required. The valve’s opening characteristics are extremely smooth, preventing bursts of gas which disturb delicate or ultra high vacuum instrumentation. Repeatability is so good, they are available with a useable Turns Counting Dial so that flow settings may be repeated time & time again. Construction is in S316 Stainless Steel with Perlast seals for best corrosion resistance and minimum sample contamination.
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