150/160 Series Soft-start Bellows Vacuum Isolation Valve
Overview
Two-stage 150/160 Series Soft-start Bellows Vacuum Isolation Valves achieve a soft pump down and vacuum system isolation in one common housing. A small bypass valve is integrated into the main isolation valve, simplifying setup and reducing costs. With the integrated soft pump down feature, turbulent flow is diminished preventing contamination buildup and damage.
- NW25 - NW100
- Two-stage with adjustable conductance for variable pump down speed
- Designed to ensure product quality, reliability, and value
Products
Configuration Options
Please see the Two-stage Soft Start Valve datasheet for available product options.
Specifications
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TypeTwo-stage Soft Start Bellows-sealed Isolation Valves
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Vacuum RangeAtmosphere to 1.0 x 10-9 Torr
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Body ConfigurationAngle, Inline
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Port SizeNW25, NW40, NW50, NW80, NW100
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Helium Leak Rate1.0 x 10-9 std cc/sec
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Cylinder Volume0.25 in3 (4.1 cm3)
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Limit Switch Rating5A - 250 VAC
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Single Pole, Single Throw5A - 30 VDC
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Blow-By PressureMain: 30 - 60 psia, depending on configuration
Bypass: 45 psia -
Maximum Internal Spring Closing PressureMain: 30 - 60 psia, depending on configuration
Bypass: 40 psia -
Maximum Bakeout Temperature150°C
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Suggested Nominal Pressure Supply65 psig
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Bypass Orifice0.225, 0.063, 0.125, 0.187 inches and custom configurations available
Features
Resources
Manuals
- 2-Stage Vacuum Valve, Bypass Valve Manual Addendum (463.1 kB, PDF)
- 2-Stage Vacuum Valve Manual (532.4 kB, PDF)
Literature
- Two-Stage Valves (849.6 kB, PDF)
Ultra-High Velocity