Stopcocks
Ace Glass, Inc. 0-5mm vacuum stopcock w/UHDPE handle PTFE plug
0-5mm threaded vacuum stopcock with PTFE plug with UHDPE handle. Needle valve permits smooth valve adjustment down to 0.1 cc/min flow rate. Double PTFE ring seals prevent exposure of FETFE backup O-ring to corrosive gases and liquids.
Chemglass Life Sciences Stopcock, Four Way, PTFE Plug, 2mm Bore, 15.2/30 Plug Size, 8mm OD Sidearms
Stopcock, Four Way, PTFE Plug, 2mm Bore, 15.2/30 Plug Size, 8mm OD Sidearms. A 1:5 taper PTFE plug having double "V", 90º bores to connect opposite sets of adjacent arms. Configuration of stopcock allows it to be used in a system to obtain reversal of flow.
Ace Glass, Inc. 0-5mm 3-way high vacuum stopcock (glassblower)
0-5mm 3-way high vacuum stopcock that eliminates exposure to corrosive materials. Stopcock can be used to at least 13.6 Kg internal pressure. Ultimate vacuum of 10-7 can be realized with the standard three seals. The smooth acting valve permits fine adjustment of the opening. The front ring seal makes a positive closure against a precision-formed heavy glass seat. The PTFE plug is not bakeable, and the O-rings are not replaceable. Reference marks on the body aid in repetitive setting.
Ace Glass, Inc. 6mm stopcock straight bore PTFE plug
6mm straight bore stopcock with polished barrels and 1:5 PTFE plug.
Ace Glass, Inc. 4MM STOPCOCK (GB)
4mm Newman type stopcock is used with a distilling head to enable the operator to determine reflux ratios and take-offs. Process is described in Industrial and Engineering Chemistry, Volume 14, No. 11, Page 902, Nov. 15, 1942.
Chemglass Life Sciences Stopcock, Straight Bore, Glass Plug, 6mm Bore, 20/44 Plug Size, 12mm OD Sidearms, #5 Clip Size
Stopcock, Straight Bore, Glass Plug, 6mm Bore, 20/44 Plug Size, 12mm OD Sidearms, #5 Clip Size. The 6mm bore sizes are supplied complete with the listed size metal retaining clip CG-423.
Chemglass Life Sciences Stopcock, 90°, Hollow Glass Plug, High Vacuum, 4mm Bore, 17.35/50 Plug Size, 10mm OD Sidearms
Similar to CG-476, but with the sidearms sealed at a 90 degrees angle to each other. Precision ground and hand-lapped with corresponding numbers on barrel and plug.
Chemglass Life Sciences Stopcock, Straight Bore, Both Arms Capillary, PTFE Plug, 2mm Bore, 11/25 Plug Size, 7mm OD Sidearms
Stopcock, Straight Bore, Both Arms Capillary, PTFE Plug, 2mm Bore, 11/25 Plug Size, 7mm OD Sidearms. Similar to CG-424, but with both arms being made of 2mm ID capillary tubing.
Chemglass Life Sciences Stopcock, Straight Bore, Glass Shell only for PTFE Plug, 1mm, 1.5mm & 2mm Bore, 11/25 Barrel Size, 8mm OD Sidearms
Stopcock, Straight Bore, Glass Shell only for PTFE Plug, 1mm, 1.5mm & 2mm Bore, 11/25 Barrel Size, 8mm OD Sidearms. Glass portion only of CG-424 stopcock. Accepts 1:5 taper PTFE plugs.