Series 481 | All-metal gate valve

All-metal gate valve

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.

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Factsheet

Series Number481
Series NameAll-metal gate valve
DescriptionID16, 40, 200, 250 and 320. All-metal gate valves with patented VATRING sealing system. Used as isolation valves in UHV and extreme UHV systems. Available with manual actuator or with extended or compact double acting pneumatic actuator. Bakeable to 300°C in open and closed position. Self-locking in closed position. Radiation resistant.
Actuator typesManual actuator (hand wheel), Pneumatic actuator (double acting)
Sealing technologyVATRING-System
Sealing GateMetal
Sealing BonnetMetal
FeedthroughBellows
Leak rate body < 1 . 10-10 mbar ls-1
Leak rate Seat < 1 . 10-10 mbar ls-1
Nominal inside diameters (ID) in mm (inch)16 (5/8") - 250 (10")
Body materialStainless steel
Cycles until first service DN 16 (5/8") - DN 40 (1 1/2"): 20'000 cycles / DN 200 (8") - DN 320 (12"): 5'000 cycles

Options

Actuator
  • Accessory for pneumatic actuator for faster closing
  • 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
  • Solenoid radiation resistant to 10⁶ Gy (Standard 10⁴)
  • 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

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