Reliable Isolation Under All Conditions

The 01.0 Mini UHV Gate Valve series works with VAT’s patented MONOVAT technology which is specially developed to provide reliable gate sealing without any friction. With the MONOVAT technology the seal is vulcanized to the gate to provide a more reliable and durable sealing combined with superior performance in terms of low particle generation and outgassing.

The special soft closing mechanism of the MONOVAT minimizes potential shock effects to the process caused by a fast moving gate touching the valve body.

Free of lubricants, no valve mechanism in vacuum, a bake out temperature up to 250 °C and special cleaning options eliminate risks of process contamination.

With its modular design and its various design options, the 01.0 series can be tailored to nearly every requirement - even after installation - giving numerous update options, e.g. in different actuation or gates.

Already installed in thousands of demanding applications under various process conditions, the 01.0 series has proven its outstanding reliability. It has become the standard for UHV isolation in sizes from DN 16 – 50 mm (5/8" – 2").

Mini UHV Gate Valve - Manual
Mini UHV Gate Valve - Pneumatic

Mini UHV Gate Valve - Closed
Mini UHV Gate Valve - Open

The 01.0 Mini UHV Gate Valve is available in manual and pneumatic versions with solenoid valves either as an onboard solution or for external mounting. The solenoid valve’s standard voltage is 24 V DC but other voltages are available on request.

The valve position is indicated with a visual (mechanical) indicator. Standard options for flanges connectors are ISO-KF, CF-F. Customer specific flanges can be integrated.
The standard sealing material is FKM but other materials are available on request.

Special versions of the 01.0 for gas analysis provide bypass valves and orifice modules which are combined for a reliable and fixed pressure reduction. Window gates are also an option.

Key Features of the 01.0 Mini UHV Gate Valve


  • Reliable, robust, modular design
  • MONOVAT technology to avoid particle generation
  • Free of lubricants and bakeable up to 250°C
  • Welded metal bellow sealing of feedthrough
  • Robust stainless steel housing


  • Reliable performance
  • Upgrade options
  • Low and easy maintenance
  • Low cost of ownership

Modular Design

Mini UHV Gate Valve - Modular Design
1Valve body with CF-F flange
2Valve body with ISO-KF flange
3Manual actuator
4Manual actuator with position indicator
5Pneumatic actuator: single acting with closing spring (NC) or
single acting with opening spring (NO)
6Pneumatic actuator: double acting, mechanically locked
7Position indicator for 80 °C (standard)
8Position indicator for 200 °C (option)
93/2-way solenoid valve
10_4/2-way solenoid valve
Technical data
Sizes   DN 16 (⅝"), DN 25 (1’’), DN 40 (1½’’), DN 50 (2’’)
Actuator Pneumatic Single acting with closing spring (NC) or opening spring (NO),
or double acting
  Manual With turning handle
Body Material   Stainless Steel
Feedthrough   Bellows
Standard Flanges   ISO-KF, CF-F
Leak Rate Valve Body < 5 × 10-10 mbar ls-1
  Valve Seat < 1 × 10-9 mbar ls-1
Pressure Range   1 × 10-10 mbar to 2 bar (abs)
Differential Pressure On the Gate ≤ 2 bar
  At Opening ≤ 30 mbar
Cycles until first Service   50 000
Temperature Valve Body ≤ 250 °C open / ≤ 200 °C closed
  Pneumatic Actuator ≤ 200 °C
  Solenoid Valve ≤ 50 °C
  Position Indicator ≤ 80 °C
  Manual Actuator ≤ 250 °C
Heating and Cooling Rate   ≤ 50 °C h-1
Material Valve Body AISI 304 (1.4301), AISI 316L (1.4435)
  Mechanism AISI 304 (1.4301)
  Bellows AISI 316L (1.4435)
Seal Bonnet Metal
  Gate FKM (Viton®)
Mounting Position   Any
Solenoid Valve Actuator with closing or opening spring    24 VDC, 9.0 W (others on request)
  Actuator double acting 24 VDC, 5.4 W (others on request)
Position Indicator: Contact Rating Voltage ≤ 250 VAC ≤ 50 VDC
  Current ≤ 5 A ≤ 3 A
Valve Position Indication   Visual (Mechanical)


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