333 STOPCOCKS & VALVES
Stopcocks / HI-VAC® Valves
HI-VAC® Straight Valves with PTFE Plug and No Tip O-Ring This straight high-vacuum valve is for use in vacuum applications up to 5 x 10-7 Torr.
T-Bore 90° with Solid Glass Plug Precision-ground stopcock for use in vacuum applications.
• • • •
T-bore
1:10 taper
Solid glass plug
•
Similar to 826500 but without tip o-ring exposure.
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
• Designed with a precision external thread for fine control • Can be used as a bleed up to 1/2 turn • Full open position is at 1-1/2 turns • Primary seal is made with a FKM o-ring on a tapered seat • Non-rotating PTFE shaft can be used continuously at system temperatures of 230 °C or intermittently at 275 °C • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
Stopcock Bore Size (mm)
Part Number
Stem OD (mm)
Case Qty
843900-0002
8
2
1
Part Number Stem OD (mm)
Bore Range (mm)
Case Qty
826600-0004 826600-0008 826600-0012
9
0-4 0-8
1 1 1
Oblique-Bore with Hollow Glass Plug This hollow glass plug is intended for use in vacuum applications.
13 16
0-12
Replacement Parts
•
Oblique-bore, precision-ground stopcock with a 1:10 taper Lower vacuum chamber is not in the line of flow and must be outgassed in a separate operation
Part Number 826601-0004 826601-0008 826601-0012 826502-0004 826502-0008
Description
Case Qty
•
Size 4 Valve Plug Size 8 Valve Plug Size 12 Valve Plug
1 1 1 1 1
•
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements Part Number Stem OD (mm) Case Qty 843000-0010 19 1
Size 4 Valve without Plug Size 8 Valve without Plug
HI-VAC® Straight Valves with Tip O-Rings and Glass Plug This valve uses a glass plug (as an alternative to PTFE or CTFE) for applications where the “out- gassing” plug material is undesirable. • Designed with a precision external thread for fine control • This valve can be used as a bleed up to 1/2 turn • Full open position is at 1-1/2 turns • All plugs are totally interchangeable with other HI-VAC® counterparts • Supplied with FKM o-rings • For greater solvent resistance, see FFKM listing under o-rings ,758240 • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
Three-Way Double Oblique with Solid Glass Plug and Vacuum Chamber Three-way, double-oblique bore, precision-ground stopcock.
• • •
1:10 taper
Solid glass plug
Lower vacuum chamber is not in the line of flow and must be outgassed in a separate operation
•
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
Part Number Stem OD (mm)
Bore Range (mm)
Case Qty
Stopcock Bore Size (mm)
Part Number
Stem OD (mm)
Case Qty
826450-0004 826450-0008 826450-0012
9
0-4 0-8
1 1 1
13 16
845100-0004
10
4
1
0-12
Replacement Parts
Part Number 826451-0004 826451-0008 826451-0012 826502-0004 826502-0008
Description
Case Qty
Size 4 Glass Plug Size 8 Glass Plug Size 12 Glass Plug
1 1 1 1 1
Size 4 Valve without Plug Size 8 Valve without Plug
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