Metering Valves

Features & Benefits

• Metering accuracy - 18 turn displacement of stem provides unparalleled preformance and repeatability
• 1° and 3° stems provide a wide flow range with ultra fine metering control
• Precision orifice and close thread tolerances minimize hysteresis
• Micrometer vernier handle provides visual control and repeatable stem settings

Typical Applications

• Fine metering in medical and biochemical gas or vapor analysis
• Sampling and analyzing water and air pollution
• Chromatographs, mass spectrometers and other instruments where fine metering is required

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Features & Benefits

• 18 turn non-rotating stem
• Low internal volume provides low flow control
• Unique thread design allows tapered needle portion of the stem to be withdrawn into the outer stem
• O-ring seals below the stem threads provide smooth operation and eliminate backlash
• Dial indicator provides repeatable positioning of stem in full turns and tenths of a turn from closed to full open

Typical Applications

• Chromatography
• Mass Spectroscopy
• Sampling and fine metering
• Pollution analyzing instrumentation

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Features & Benefits

• 20 turn stem deplacement for fine metering
• Optional micrometer vernier handle provides visual control and repeatable stem settings.
• 2 orifice sizes 0.062" (1.59mm) and 0.125 (3.17mm) are available with standard 8° stem.
• Spring loaded stem in all 316 stainless steel valves prevents galling and enlargement of orifice.
• For ultra fine metering, a 1° spring loaded stem design is available.

Typical Applications

• Metering liquids and gases on analytical equipment 
• Laboratory sampling
• Gas chromatography, analyzers
• Flow meters and gauges

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