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Vacuum Valves > VAT Valves > Angle Valves, Diaphragm Valves

VAT Easy Close All-metal Angle Valve (Series 541)



Search Products in Series 541
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3 compatible parts found


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Isolation valve for UHV and extreme UHV applications, e. g. for pump isolation on pumping systems, intermediate pumping of gauge ports, gas handling in tritium systems, industrial applications, R&D, labs, etc.

Specifications Table

Series Number 541
Series Name Easy Close All-metal Angle Valve
Description All-metal angle valve with patented VATRING sealing system. Used as isolation valves in UHV and extreme UHV systems. Manual actuator (hexagon head, inner-square or handwheel). The manual closing movement ends at a mechanical stop; no torque wrench needed. Bakeable to 300°C in the open and closed position. Fixed CF-R rotating flanges for CF edge protection and easy mounting. Highly radiation resistant.
Actuator Types Manual actuator (hexagon head)
Sealing Technology VATRING-System
Sealing Gate Metal
Sealing Bonnet Metal
Feedthrough Bellows
Leak Rate - Body < 1 . 10-10 mbar ls-1
Leak Rate - Seat < 1 . 10-10 mbar ls-1
Nominal inside diameters (ID) in mm (inches)
Body material Stainless steel


Specifications Table

Series Number 541
Series Name Easy Close All-metal Angle Valve
Description All-metal angle valve with patented VATRING sealing system. Used as isolation valves in UHV and extreme UHV systems. Manual actuator (hexagon head, inner-square or handwheel). The manual closing movement ends at a mechanical stop; no torque wrench needed. Bakeable to 300°C in the open and closed position. Fixed CF-R rotating flanges for CF edge protection and easy mounting. Easy seal replacement - two times a leak on the seat can easily be repaired on site. Highly radiation resistant.
Actuator Types Manual actuator (hexagon head and inner square)
Sealing Technology VATRING-System
Sealing Gate Metal
Sealing Bonnet Metal
Feedthrough Bellows
Leak Rate - Body < 1 . 10-10 mbar ls-1
Leak Rate - Seat < 1 . 10-10 mbar ls-1
Nominal inside diameters (ID) in mm (inches) 16 (5/8") - 63 (2 1/2")
Body material Stainless steel


Dimensional Drawings


Legend ▼ - Valve seat side
1 - FLEX VATRING
2 - Bonnet seal
3 - Bellows

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