Established in 1968, GNB manufactures valves, vacuum chambers and a variety of components for the vacuum industry. Specializing in medium to large valve manufacture and repair, the company has also established a leadership position in water-cooled valves and vacuum chambers. GNB designs, develops and manufactures vacuum chambers of extremely high complexity.

Located in Elk Grove, CA, in the Central Valley, GNB has access to a talented labor pool and is part of an infrastructure that allows for successful planning, development and manufacture of sophisticated components and valve/chamber hardware. GNB specializes in proactive relationships, allowing us to become an integral part of the solution for the customers' needs. GNB works diligently with customers to develop products that are optimized for specific applications.

GNB's core strength is the ability provide engineering and manufacturing assistance to customers, which results in reliable solutions to complex problems. Our goal is to completely understand the needs of customers and develop products that meet their expectations. We want our customers to perceive GNB as an extension of their organization.

Product Lines

• Gate Valves
• Angle Valves
• Pendulum Valves
• Throttling Valves
• Chambers
• Baffles
• Traps
• Custom Valves
• Custom Chambers
• Valve Rebuild and Repair
• Water-cooled Components, Valves & Chambers

Products, Services and Markets

GNB's strength is derived from its excellence in building the most robust vacuum components in the industry. Specializing in gate valves, slit valves and angle valves ranging in size from 4" to 72", GNB has produced valves measuring 144" x 48", possibly the largest in the world. GNB develops valve/chamber hardware for photovoltaic, aerospace, decorative and industrial coating applications.

GNB brings engineering and manufacturing resources to our customers. We believe that time spent with our sales and engineering personnel will provide value to our customers through alternative solutions to their vacuum system requirements. Our goal is to insure you have the best price/reliability relationship possible.

Chamber types developed by GNB include Load-lock, Cluster, In-line, Box, Cylindrical and Clam Shell. GNB can also provide a complete array of vacuum components including baffles, traps, shrouds, throttle plates, bellows, view ports, spool pieces, nipples and manifolds. GNB supplies these products to companies specializing in vacuum technologies throughout the world.

Our customers are involved in a variety of industries including Aerospace, Microelectronics, High Energy Physics,
R&D, Metallurgical, Vacuum Furnace, Vacuum Coating, Crystal Growing, Semiconductor, Food Drying, Pharmaceutical, Nuclear, Optical, Universities and National Research Laboratories.

Sales Offices

Main Office
Elk Grove, CA
916.395.3003 Fax 916.395.3363

International Sales - contact our main office — 916/395-3003

Company Key Products

Engineering – GNB employs a full design staff using Solidworks or AutoCad 2006
Chambers – Box, Cylindrical, Custom Design or Built to Specification
Valves – Gate, Slit, Angle, & Pendulum
Baffles – Multi-Coolant Baffles and Liquid Nitrogen Traps
Custom Valve – Design to meet customer specifications
Testing – GNB Test Facility includes Vacuum Leak Detection, RGA Scanning, High Vacuum Pumping, and Bake-Out Capability.
Additional Services – Valve Repair and Rebuilding