VAT 021 Series - Intended Use and Technical Data; Intended Product Use; Technical Specifications Overview

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ISO 9001
EN 29001
Installation, Operating, and Maintenance Instructions
Series 021
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email reception@vat.ch http://www.vat.ch
205440EC
2003-04-14
2/12
Intended Use of Product
Use product for vacuum applications under the conditions indicated in chapter «Technical data» only!
Other applications are only allowed with the written permission of VAT.
Description
Flange see dimensional drawing
Actuator pneumatic, double acting, with position indicator,
mechanically locked in closed position
Feedthrough welded metal bellows *)
Technical Data
Leak rate (FKM seals)
- valve body < 1
.
10
-9
mbar l s
-1
- seat < 1
.
10
-9
mbar l s
-1
Leak rate (FFKM seals)
- valve body < 1
.
10
-8
mbar l s
-1
- seat < 1
.
10
-7
mbar l s
-1
Pressure range 1
.
10
-9
mbar to 1.2 bar (abs)
Differential pressure on the gate
- in either direction 1.2 bar *)
Differential pressure at opening ≤ 30 mbar *)
Cycle life between maintenance
- actuator 2 million *)
- bellows (under clean vacuum conditions) 2 million *)
- gate seal FKM (under clean vacuum conditions) 2 million
- gate seal FFKM (under clean vacuum conditions) 1 million
Operating temperatures
- valve body aluminum <150°C
- valve body stainless steel <200°C
- pneumatic actuator <150°C
- position indicator <80°C
- solenoid <50°C
Temperature difference between seat and gate ≤ 40°C
Heating and cooling rate ≤ 40°C h
-1
Material