GNB Corporation - Vacuum Valves, Vacuum Chambers, Gate Valves and Vacuum Accessories

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GNB has been Acquired by the KL Group

We are pleased to announce that GNB Corporation is now a part of the KL family of companies.  As far as capabilities are concerned, little will be changed.  GNB will remain a California corporation and will retain all of its existing personnel and competencies.  However, in addition to the valves, chambers and baffles which GNB has been providing to customers since 1968, GNB will also be the US manufacturer and distributor of Advantorr products.  This will allow us to sell a full range of high quality vacuum components such as flanges, fittings, viewports, gate valves, angle valves and semiconductor wafer transfer valves.

For complete details of these products,  please contact us at

If you have any questions regarding the acquisition, please do not hesitate to contact me directly at (916) 395-3003.


Ken Harrison, CEO

GNB has an over 40 year proven track record of manufacturing high quality, custom engineered vacuum solutions for the scientific, industrial, and research vacuum industry. As America's leading manufacturer of large vacuum chambers and valves, we also deliver a diverse range of high vacuum, and high temperature, products and services, including:

Engineering: GNB employs a full design staff using SolidWorks
and AutoCAD
Multi-Coolant Baffles: Flange and Flangeless Designs
Vacuum Chambers: Stainless Steel / Carbon Steel / Aluminum
Types: Box, Cylindrical, Inline, Custom Design, Division 1 standard or Built to Specs, ASME Pressure Vessels BPVC Section VIII
Liquid NitrogenTraps: Grained or Electro Polished Finish, CFF, ISO or Special Flanges
Vacuum Valves: Stainless Steel / Carbon Steel / Aluminum
Types: Gate Valves, Slit Valves, Angle Valves and
Pendulum Valves
Flanges and Fittings: Customized to your specific needs
Custom Valves: Designed to meet customer specifications
Throttle Plates: 2 Position Pneumatic, Throttling Pneumatic, Electric Servo Drive
Viewports: Full View Ports: 4-inch, 6-inch, 8-inch, 12-inch
Testing: GNB Test Facility includes Vacuum Leak Detection,
RGA Scanning, High Vacuum Pumping, and Bake-Out Capability.
Additional Services – Repair and Rebuild of Vacuum Valves from any Manufacturer
We are a top US manufacturer offering full design vacuum engineering of custom, medium to large to extra large; water cooled, vacuum chambers and valves. Our engineering staff can design a custom product to meet your needs, or select from our standard designs. We have the expertise to build it right the first time, on time, and at competitive prices.
View our 2014 ISO Certification
GNB Corporation is a BBB Accredited Business. Click for the BBB Business Review of this Manufacturers & Producers in Elk Grove CA
Vacuum Units Converter
Converts the common values used in vacuum systems

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