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> Varian variable leak valve for vacuum chamber pump
Varian variable leak valve for vacuum chamber pump
* 1.33 in. ConFlat Flange Inlet
* 2.75" ConFlat Flange Outlet
* This is a used Leak Valve, in excellent condition.
* An identical new valve costs $1,260.
* The valve was used only with purified argon gas, on a perfectly clean UHV system.
* Very lightly used, most of its life is still in it.
The variable leak valve includes a movable piston with an optically
flat sapphire that meets a captured metal gasket. This forms a
seal completely free from friction, seizing, and shear. The sapphire s
movement is controlled through a threaded shaft-and lever
mechanism which provides a mechanical advantage of
* Controlled Leak Rate: 10-10 torr-l/sec (minimum)
* Vacuum Range:Atmosphere to below 10-11 torr (mbar)
* No leak detectable on a helium mass spectrometer leak detector with sensitivity of 1 x 10-10 std cc/sec
Check for more technical specifications at:
http://big5.varianinc.com.cn/products/vacuum/measure/shared/measure-catalog.pdf
Please feel free to ask questions. More photos available on request.
