Up-to-Air Valve with ISO-QF Flange

ISO-QF up-to-air valves allow for the venting or backfilling of your chamber for increased system regulation and safety. These side mounted up-to-air valves are available welded in sizes QF16-50 flanges.


  • High vacuum rating of 1×10-8 Torr
  • Temperature range from -60°C to 315°C
  • Manual valve actuation
  • 1/4″ bellows sealed valve


  • Optional connections for valve port (VCR®, Swagelok®) standard is 1/4 inch tube end.

*Dimensions are in inches unless otherwise specified

Part IDReference NumberDescription Flanged Port 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID9100101Reference NumberQF16-025-UTAV-2.85Description Up-to-Air Valve with a QF16 Flange portFlanged Port QF163D CADLoginDrawingLoginUnit Price$370.00Contact
Part ID9100102Reference NumberQF25-025-UTAV-2.8Description Up-to-Air Valve with a QF25 Flange portFlanged Port QF253D CADLoginDrawingLoginUnit Price$390.00Contact
Part ID9100103Reference NumberQF40-025-UTAV-2.85Description Up-to-Air Valve with a QF40 Flange portFlanged Port QF403D CADLoginDrawingLoginUnit Price$460.00Contact
Part ID9100104Reference NumberQF50-025-UTAV-2.85Description Up-to-Air Valve with a QF50 Flange portFlanged Port QF503D CADLoginDrawingLoginUnit Price$470.00Contact