STOPCOCKS & VALVES
335
HI-VAC® Valves
HI-VAC® Low Hold-Up with Extended Tip and PTFE Plug This high-vacuum valve has bent sidearms to minimize holdup of liquids. • The accurately controlled valve seat and the extended tip on the PTFE plug allow control similar to a needle valve for both liquids and gases • O-rings are FKM • Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
HI-VAC® Right-Angle with Tip O-Ring and Glass Plug This right-angle valve uses a glass plug (as an alternative to PTFE or CTFE) for applications where the “out-gassing” plug material is undesirable. • 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
Part Number Stem OD (mm)
Bore Range (mm)
Case Qty
Part Number Stem OD (mm)
Bore Range (mm)
Case Qty
826420-0002 826420-0004
8 9
0-2 0-4
1 1
826460-0004 826460-0008 826460-0012
9
0-4 0-8
1 1 1
13 16
Replacement Parts
0-12
Part Number 826411-0002 826411-0004
Description
Case Qty
Replacement Parts
Size 2 Threaded Plug, PTFE Size 4 Threaded Plug, PTFE
1 1
Part Number 826451-0004 826451-0008 826451-0012
Description
Case Qty
Size 4 HI-VAC® Low Hold-Up Valve with Extended Tip and No Plug
Size 4 Glass Plug Size 8 Glass Plug Size 12 Glass Plug
1 1 1
826422-0004
1
Size 4 HI-VAC® Right-Angle Valve Without Plug Size 8 HI-VAC® Right-Angle Valve Without Plug Size 12 HI-VAC® Right-Angle Valve Without Plug
826512-0004
1
HI-VAC® Right-Angle with PTFE Plug and No Tip O-Ring This high-vacuum valve is for use in vacuum applications up to 5 x 10-7 Torr.
826512-0008
1
826512-0012
1
•
Similar to 826510 but without tip o-ring exposure
• 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
HI-VAC® Right-Angle with Tip O-Ring and PTFE Plug This right-angle high-vacuum valve is for use in vacuum applications up to 5 x 10-7 Torr. • 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
Part Number Stem OD (mm)
Bore Range (mm)
Case Qty
826610-0002 826610-0004 826610-0008 826610-0012
8 9
0-2 0-4 0-8
1 1 1 1
13 16
0-12
Part Number Stem OD (mm)
Bore Range (mm)
Case Qty
826510-0004 826510-0008 826510-0012 826310-0020
9
0-4 0-8
1 1 1 1
13 16 22
0-12 0-20
Replacement Parts
Part Number 826601-0004 826601-4004 826601-0008 826601-0012
Description
Case Qty
Replacement Parts
Size 4 PTFE Valve Plug
1 1 1 1
Size 4 Valve Plug with PEEK knob
Size 8 PTFE Valve Plug Size 12 PTFE Valve Plug
Part Number 826501-0004 826501-0008 826501-0012
Description
Case Qty
Size 4 Valve Plug, PTFE Size 8 Valve Plug, PTFE Size 12 Valve Plug, PTFE
1 1 1 1 1
Size 4 HI-VAC® Right-Angle Valve Without Plug Size 8 HI-VAC® Right-Angle Valve Without Plug Size 12 HI-VAC® Right-Angle Valve Without Plug
826512-0004
1
826512-0004 Size 4 HI-VAC® Right-Angle Valve Without Plug 826512-0008 Size 8 HI-VAC® Right-Angle Valve Without Plug
826512-0008
1
Size 12 HI-VAC® Right-Angle Valve Without Plug
826512-0012
1
826512-0012
1
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