- Vacuum Components
GNB
Since 1968, GNB has been a leading supplier of medium to large vacuum valves, designed and engineered for ultra-high vacuum applications. GNB’s engineering team offers standard and customised solutions to meet customers’ specifications. Highly skilled sales staff support customers with project design. Based in Elk Grove, California, USA, the company has a worldwide sales network.
GNB is a company of technology experts serving other technology experts. Since our founding in 1968, it has been our commitment to technology that has set us apart. During this time, we have produced outstanding, innovative products for the most demanding applications in areas such as temperature extremes, large sizes, radiation levels, vacuum levels, vibration levels, and unique applications.
Additional Information
Angle Valves
GNB’s angle valves are fabricated from stainless steel or mild steel. GNB’s engineers are capable of building angle valves of any complexity. Whether R&D or large volume production, there is always a customized solution by GNB’s experts.
GNB Angle Valve
304 Stainless Steel or painted mild steel
Dual o-ring or bellow shaft sealing available
Water cooled flanges and bodies optional
Leak checked to <10-9 std. cm³/sec Helium
Designed for 10-8 Torr operation
Integrated baffles optional
Options for angle valves:
Actuation: pneumatic, electric, hydraulic, manual
Flanges: ASA, ISO, Conflat®, custom designed
Shaft Seal: dual O-rings, bellows
Watercooling: flanges, body, gates
Ports: roughing, gauges, view
Gate Valves
GNB's gate valves are designed for high vacuum and ultra-high vacuum applications. The longterm reliable service to customers for 40 years, continuos improvements in design lead to reduced cost of ownership. All GNB gate valves seal both ways agains full atmosphere pressure difference.
304 Stainless Steel or painted mild steel
Leak checked to < 10-9 std. cm³/sec Helium
Designed for 10-8 Torr operation
RGA and bakeout capability
Dual o-ring or bellow shaft sealing available
Seals both ways
Water cooled option for flange and plate available
Size up to 3000 mm
The following types of gate valves are available:
Round valves
Slit valves
Rectangular
Options for gate valves:
Actuation: pneumatic, electric, hydraulic, manual
Flanges: ASA, ISO, Conflat®, custom designed
Shaft Seal: dual O-rings, bellows
Watercooling: flanges, body, gates
Ports: roughing, gauges, view
Pendulum Valves
GNB’s Pendulum gate valves offer a cost and space saving alternative to traditional isolation gate valves. Like all of the GNB’s gate valves, the Pendulum valve can seal both ways up to one full atmosphere pressure differenence.
Small footprint design
304 Stainless Steel
Sizes from 160mm (6”) to 320mm (12”)
Available in ASA, ISO and CF flanges
Rotary feed-through for long O-ring life
Low particle generation
Water cooled optional