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This is a replacement CHEM-CAP® plug and control knob for CHEM-VAC™ high vacuum valves CG-951 through CG-960. The plug is sold complete with a control knob and CHEM-CAP® stem.
These valves can be used in applications down to 10-7 torr. This plug features an integral Teflon® tip O-ring, preventing O-ring exposure to material at the primary seal. The shaft seal is accomplished by means of 2 Viton® O-rings covered with a specially designed Teflon® "caps". The only material exposed to the system is Teflon®.
NOTE: The control knob is not sold separately on the CG-900 series valves. The 0-20 mm bore size valve is our previous style CG-500 series valve with coarse thread and is available as item #CG-561-04.