Description
The HVA 16000 Series Shielded Gate Valve features a travelling shield that moves with the gate to protect it from debris. These valves are used in extremely aggressive applications where reoccuring down time is not an option. The Shield greatly reduces particulate migration and prolongs the sealing integrity of the gate O-ring. The body material is 304 stainless steel, which can be changed to other high temperature, non corrosive materials for exceptionally aggressive applications. Alternative elastomer O-rings are also available.
Standard Technical Specifications
Materials
Valve body and gate: 304 stainless steel
Welded bellows shaft seal: AM-350
Vacuum
Pressure Range
- HV: 1×10-9 mbar
Helium leak rate: <2x10-9 mbar l/s
Differential pressure closed: 1 bar in either direction
Maximum Δ pressure before opening: ≤ 30 mbar
Mechanism
Manual: hand crank
Pneumatic air service: 80 psig
Solenoid: 4.0 Watts
- supplied voltage: 120V AC, 50/60 Hz
Position indicator, max: 115 VAC or 28 VDC, 20 mA
Bonnet/gate seals
HV: Viton® elastomer mbar
Bakeout Temperature
without solenoid
- Standard: 150°C
- Optional: 250°C
Actuator:
- Manual: 60°C
- Pneumatic: 60°C
Mounting Position
Any
Cycles Until Service
1,000,000 cycles
dependent on process
Options
Custom flanges, roughing ports, gauge ports, heater jackets, high temperature components including O-rings, microswitches and actuator