Model: GVBB3P-SS-P
A pneumatically actuated gate valve that moves between three positions: fully open, throttle and fully closed. An ISO flange type for high vacuum (HV) and a CF flange type for ultra-high vacuum (UHV) are available.
| Actuation Type | Pneumatic |
| Body Material | SS304 |
| Bellows Material | AM350 |
| Pressure Range (HV, mbar) | 1×10⁻⁸ to 1000 |
| Pressure Range (UHV, mbar) | 1×10⁻¹⁰ to 1000 |
| Max. Differential Pressure (mbar) | ≤ 30 before opening |
| Helium Leak Rate (O-ring seal, mbar·l/s) | < 2×10⁻⁹ |
| Helium Leak Rate (Gasket seal, mbar·l/s) | < 5×10⁻¹⁰ |
| Bake Temperature (Open, °C) | 200 (FKM (Viton) bonnet seal) |
| Bake Temperature (Closed, °C) | 150 (FKM (Viton) bonnet seal) |
| Standard Seal (Gate) | FKM (Viton) O-ring |
| Standard Seal (Bonnet) | FKM (Viton) O-ring or OFHC copper gasket |
| Compressed Air Connection (mm) | Ø6 |
| Compressed Air Pressure (kg/cm²) | 4 to 6 (overpressure) |
| Options | Position indicator, pneumatic control solenoid valve, roughing port, other gate O-ring material |
| Surface Treatment | Scotch polished |