XHV All-Metal Gate Valve (Series 48)
VAT’s Series 48.1 / 48.2 XHV All-Metal Gate Valve is ideal for UHV and XHV applications in harsh, high temperature, and high radiation conditions. This valve features VAT’s VATRING “hard on hard” all-metal sealing system with stainless steel sealing surfaces that deform elastically when closed.
Series 48 valves are available from DN 16 (5/8″) to DN 320 (12″) sizes with standard CF-F fixed flanges. Actuation options include manual, pneumatic with compact actuator, and pneumatic with extended actuator that allows for maximized bake-out temperature of up to 300°C. Valve options include gates with windows and ports for venting, roughing, or attaching gauges.
Series 48 XHV all-metal gate valves are built to perform in extreme UHV applications and excellent for use in MBE systems, coating systems, beamlines, and R&D systems.
ANCORP is a North American distributor of VAT vacuum valves. Contact us for more information on VAT Series 48 All-Metal Gate Valves or request a quote.
Features
- High temperature and radiation resistance
- Bakeable to 300°C open and closed
- Oil and grease-free mechanism
- Reliable VATRING sealing in closed position
- Allows opening the valve against differential pressure without damage
Technical Data
- Sizes:
- Series 48.1: DN 16 (⅝”), DN 40 (1½”), DN 200 (8″), DN 250 (10″), DN 320 (12″)
- Series 48.2: DN 63 (2½”), DN 100 (4″), DN 160 (6″)
- Actuator:
- Manual: handwheel
- Pneumatic: Double acting
- Body Material: Stainless steel
- Feedthrough: Bellows
- Standard Flanges: CF-F
- Leak Rate:
- Valve body: < 1×10-10 mbar ls-1
- Valve seat: < 1×10-10 mbar ls-1
- Pressure Range: XHV to 2 bar (abs)
- Differential Pressure:
- On the Gate: ≤ 2 bar
- At Opening:
- DN 16 – 40: ≤ 1 bar
- DN 63 – 250: ≤ 500 mbar (or 1 bar with reduced number of cycles)
- DN 320: ≤ 500 mbar (reduced number of cycles)
- Cycles Until First Service:
- DN 16 – 200: 20,000
- DN 250 – 320: 5,000
- Temperature:
- Valve Body: ≤ 300°C
- Manual Actuator: ≤ 140°C (option: 200°C)
- Pneumatic Actuator: ≤ 200°C
- Solenoid Valve: ≤ 80°C
- Position Indicator: ≤ 80°C (option: 200°C)
- Heating and Cooling Rate:
- DN 16: ≤ 80°C h-1
- DN 40 – 160: ≤ 50°C h-1
- DN 200 – 320: ≤ 25°C h-1
- Material:
- Valve Body: AISI 316L (1.4404, 1.4435)
- Mechanism: AISI 316L (1.4404, 1.4435)
- Bellows: AISI 316L (1.4435)
- Seal: Bonnet, Gate: metal
- Mounting Position:
- DN 16 – 250L: Any
- DN 320: On request
- Solenoid Valve: 24 VDC, 2.5 W (others on request)
- Position Indicator: Contact Rating:
- Voltage: ≤ 50 VAC/DC
- Current: 80°C: ≤ 1.2 A; 200°C: ≤ 1 A
- Valve Position Indication: Visual (Mechanical)