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- Activair s.r.o.
Ostravská 311/7
747 70 Opava-Komárov
Czech Republic
Tel: | +420 595 171 552
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Fax: | +420 226 013 984 |
E-mail: | |
ID: | 28605837
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VAT: | CZ28605837 |
ID data: | 3bngrkk
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- Activair s.r.o.
Bohunická 728/24a
619 00 Brno - Horní Heršpice
Czech Republic
Tel: | +420 545 210 455
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Fax: | +420 226 013 984 |
E-mail: |
Branch Praha
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Activair s.r.o.
Novodvorská 803/82
142 00 Praha 4 – Lhotka
Czech Republic
Tel: | +420 222 362 288
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Fax: | +420 226 013 984 |
E-mail: |
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- Activair SK s.r.o.
Cementarenska cesta 16
974 01 Banska Bystrica
Slovakia
Tel: | +421 948 422 022
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E-mail: |
Activair.cz > > > > >
GVI250
The GV range of stainless steel bellows sealed gate valves are designed for applications requiring overall leak tightness and a minimum of hydrocarbon in the residual atmosphere. These superior quality valves offer high vacuum integrity coupled with maximum conductance.
Features and Benefits
- In situ removal of gate and linkage mechanism for easy servicing
- Virtual leaks eliminated due to vacuum brazed manufacture
- Electropolished finish inside and outside
- Compact design with high conductance
- Long periods of use between maintenance
- Low vibration and shock
- Free choice of orientation
Technical data | |
Pressure range | 10-9 mbar to 1 bar (absolute) / 8 x 10-10 - 750 Torr |
Leak rate | < 10- 9 mbar l s- 1 / 8 x 10-10 Torr l s- 1 |
Maximum differential pressure on the valve plate | 1 bar / 750 Torr in either direction |
Maximum differential pressure on the valve plate at opening | 20 mbar / 15 Torr |
Material of construction | |
Body, valve plate | AISI 304 stainless steel |
Mechanism | AISI 304 stainless steel, |
Bearings | Hardened high carbon chrome steel |
Circlips | SS PH 15-7 Mo |
Bellows | AM 350 stainless steel |
Seals, valve plate | Fluoroelastomer |
Bonnet | |
Metal sealed valves | OFHC |
Other valves | Fluoroelastomer |
Bakeout temperature | |
Valve body, valve open | 150 °C (fluoroelastomer bonnet seal) |
Valve body, valve open | 250 °C (metal bonnet seal) |
Valve closed | 200 °C |
Actuator, manual | 200 °C |
Average life until first service* | 100000 closures |
Mounting position | Any orientation |
Flange bore | 250 mm |
10 in | |
Conductance in high vacuum | 23000 ls-1 |
Approx weight | 73 kg |
* Dependent on the vacuum environment and the opening and closing speed.
- Product datasheet (pdf, 713KB)