All-metal Gate Valve (Series 481)

The valve is suitable for a variety of UHV and extreme UHV applications. For example as shut-off device in the front ends and beamlines of synchrotrons and pumping systems, as sector valve in booster synchrotrons and LINACS, as transfer valve in MBE and coating systems, as isolation valve on systems with increased temperatures etc.

Specifications Table

Series Number	481
Series Name	All-metal Gate Valve
Description	Isolation valve for vacuum applications in extreme UHV, high temperature or aggressive media.
Actuator Types	Manual actuator (hand wheel), Pneumatic actuator (double acting)
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") - 250 (10")
Body material	Stainless steel

Dimensional Drawings

Actuator

Pneumatic actuator compact 10⁶ Gy, bakeable to 140°C (for max. 100h)
Pneumatic actuator extended 10⁶ Gy, bakeable to 140°C (for max. 100h)
Manual actuator bakeable to 200°C
Solenoid for impulse actuation: actual valve position is maintained at power failure
Solenoid for 12, 48, V DC
Solenoid for 24, 48, 100, 115, 200, 230 V 50 Hz
Solenoid for 24, 100, 115, 200, 230 V 60 Hz
Position indicator for pneumatic actuator bakeable to 200°C (single and double position indicator)
Position indicator for manual actuator bakeable to 80°C or 200°C (single and double position indicator)
Double position indicator (2 switches each for the positions "open" and "closed"

Valve

Customer specified flanges
Larger diameters on request
Antimagnetic version with defined permeability
Window welded into the gate (sapphire standard; other window materials on request)
Ports for roughing (by-pass), venting or for gauges