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• Unique thread design allows tapered needle portion of the stem to be withdrawn into the outer stem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