QSB250
The QSB quarter swing valves are compact, quick acting, high conductance isolation valves. The QSB valves have a polished, stainless steel, ISO flanged body with fluoroelastomer ‘O’ ring sealed valve plate and shaft. The valve plate ‘O’ ring groove is vented to help maintain a stable high vacuum. The valve shaft ‘O’ rings and bearings are lubricated with Fomblin® grease to prevent gas bursts from behind the shaft seals.
This valve is supplied with a trapped ‘O’ ring.
Informacje
Features and Benefits
- Manual operation
- High conductivity
- Resists atmosphere in either direction
- Compact and quick acting
- Corrosion resistant construction
Dane techniczne
| Valve plate material | AISI 304 stainless steel |
| Operating pressure range | 10-9 - 3000 mbar |
| 8 x 10-10 - 2250 Torr | |
| Maximum pressure differential | 1000 mbar / 750 Torr |
| Operating temperature range | 5 - 40 °C |
| Maximum baking temperature | 200 °C (without actuator) |
| Leak rate | < 10-9 mbar l s-1 |
| 8 x 10-10 Torr l s-1 | |
| Flange Size | ISO250 |
| Conductance * | 13000 l s-1 |
| Operating Torque | 19.5 Nm |
* Conductance of equivalent tube length
Pliki do pobrania
QSB63, 100, 160 and 250 Quarter Swing Butterfly Valves Instruction Manual