Features
These components are reliable and economical general-purpose solutions for HV (High Vacuum) and UHV (Ultra High Vacuum) applications, emphasizing cleanliness and corrosion resistance.
In the Open Position:
When fully open, the edge-welded bellows and valve seat retract from the gas path, allowing for high conductance.
Key Specifications:
- Leak Rate: Achieves a leak rate of 2 × 10⁻⁹ mbar L/s across the seat, ensuring optimal performance.
- Pressure Range: Operates effectively at a maximum pressure of atmospheric levels and a minimum pressure of 1 × 10⁻⁹ Torr.
- Sealing Components: Features fluorocarbon o-ring seat seals, bellows-sealed shafts, and bonnet seals. For applications requiring higher temperature bakeout and improved ultimate vacuum, select copper materials.
- Actuation Options: Available in both manual and pneumatic actuation for flexibility in operation.
- Maintenance: Normal repairs can be conducted without needing to remove the valve body from the system, simplifying maintenance tasks.
Specifications Table
| Manufacturer | TFM |
|---|---|
| Pressure | Torr Min: 1.000 x 10-9 Torr Max: 760 Torrmbar 1.330 x 10-9 mbar atm 1.00 atm |
| Rates | Helium Leak Rate 2.000 x 10-9 mbar*L/s 1.500 x 10-9 Torr*L/s |
| Temperature | Actuator 80.0 ºC 176 ºFClosed Bake 100 ºC 212 ºFOpen Bake 100 ºC 212 ºF |
| Actuator Type | Pneumatic Single Acting |
| Solenoid Kit Included | No |
| Position Indicators | No |
| Bonnet Seal Type | Viton |
| Valve Body Material | 304L SS |
| Valve Seal Material | Viton |
| Shaft Seal | Bellows |
Ordering Table
| Drawing | Flange Size | Bonnet Seal Type | Part Number |
| DN35CF-DN40CF (2.75" OD) | Viton | SY0150PVCF |
| DN63CF (4.50" OD) | Viton | SY0250PVCF |
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