Cv™ Compact Bellows Vacuum Isolation Valve
Overview
Cv™ Compact Bellows Vacuum Isolation Valves are compact in size and have a formed bellows design that is reliable and achieves high conductance for its compact size. Multiple configurations are available including manual or pneumatic controlled with interface ports ranging from KF and CF to VCR and weld fittings.
- NW10 - NW25 or VCR
- HV gauge isolation, roughing, bypass or venting
- 1,000,000 cycle rating (clean environments)
Products
| Description | Drawings, CAD & Specs | Availability | Price | |||
|---|---|---|---|---|---|---|
| CV16-K1K1-MKKVV Vacuum Isolation Valve, Cv, NW16 ISO-KF, Angle Ports, Viton, Manual |
15 Weeks
|
$387 |
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| CV16-K1K1-NCVV Vacuum Isolation Valve, Cv, NW16 ISO-KF, Angle Ports, Viton, Pneumatic |
15 Weeks
|
$368 |
|
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| CV25-K2K2-MKKVV Vacuum Isolation Valve, Cv, NW25 ISO-KF, Angle Ports, Viton, Manual |
15 Weeks
|
$426 |
|
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| CV25-K2K2-NCVV Vacuum Isolation Valve, Cv, NW25 ISO-KF, Angle Ports, Viton, Pneumatic |
15 Weeks
|
$426 |
|
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|
Vacuum Isolation Valve, Cv, NW25 ISO-KF, Angle Ports, Viton, 24 VDC solenoid
$502
15 Weeks
|
CV25-K2K2-NOVV-24D Vacuum Isolation Valve, Cv, NW25 ISO-KF, Angle Ports, Viton, 24 VDC solenoid |
15 Weeks
|
$502 |
|
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| CVNL-K1-MKKVV Vacuum Isolation Valve, Cv, NW16 ISO-KF, Inline Ports, Viton, Manual |
15 Weeks
|
$436 |
|
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| CVNL-K1-NCVV Vacuum Isolation Valve, Cv, NW16 ISO-KF, Inline Ports, Viton, Pneumatic |
15 Weeks
|
$415 |
|
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| CVNL-K2-MKKVV Vacuum Isolation Valve, Cv, NW25 ISO-KF, Inline Ports, Viton, Manual |
15 Weeks
|
$453 |
|
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| CVNL-K2-NCVV Vacuum Isolation Valve, Cv, NW25 ISO-KF, Inline Ports, Viton, Pneumatic |
15 Weeks
|
$453 |
|
Configuration Options
Please see Cv datasheet for available product options.
Specifications
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TypeCompact Bellows-sealed Isolation Valves
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Vacuum RangeAtmosphere to below 10-9 Torr
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Body ConfigurationAngle or Inline
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Helium Leak RateLess than 1.0 X 10-9 std cc/sec
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Wetted Volume1.09 in3 (17.8 cm3) depending on configuration
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Cylinder Volume0.25 in.3 (4.1 cm3 )
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Cylinder Air Pressure60 to 120 psig
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Limit Switch Rating.5 A - 115 VAC
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Single Pole, Single Throw5 A - 24 VDC
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Solenoid Voltage6.0 watts: AC
7.0 watts: DC -
Blow-By Pressure30 psi (1500 Torr) differential
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Operating Temperature-26 to 125° C
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Maximum Bakeout Temperature150° C
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OrientationSeals against atm at either port
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ConductanceAngle KF25 - 4.5 l/sec
Inline: KF25 - 3.4 l/sec -
Closing Time100 msec
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Typical Life1,000,000 cycles
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Weight12.8 - 16.9 oz, depending on configuration
Features
Gauge Isolation Applications
In gauge isolation applications, the Cv Valve’s high conductance ensures more accurate readings and helps improve gauge response time. The Cv Valve can isolate the sensor from the chamber during venting to atmosphere. If a capacitance manometer is being used, the isolation valve will prevent overpressuring the diaphragm. Where the gauge is used to monitor pressure, and not required for process control, it can be isolated during the process to prevent process gases from contaminating the gauge.
Valve Options
The Cv Valve has many configurations to suit your system’s particular needs. The angle and inline valves include pneumatic or manual actuation. The manual actuation is attained either through a rotary knob or toggle lever. The rotary knob option allows for conductance variability and includes a visual position indicator. Seal choices for the Cv Valve include Viton® and Chemraz® elastomers for leak-tight operation with a metal bonnet seal option in UHV applications. Vacuum exposed parts are clean and free of lubricants.
Resources
Literature
- Cv Valves - Compact Vacuum Valves (266.4 kB, PDF)
Manuals
- Pneumatic CV Vacuum Valve Assembly Instructions (357.6 kB, PDF)
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