These Agilent Varian turbo pump vent valve kits have 1.2 mm orifice, M8 x 1.2 mm threaded, has a 5 meter cable length, are normally open (N.O.), and are closed when the turbo controller is powered on. In the event that power is lost this vent valve will open and start introducing air into the turbo at a rate that will bring it to a safe stop. This helps extend the life of the turbo by limiting the amount of time it spends while passing through resonant frequecies, which are hard on the pump's bearings (you can hear the pump actually get louder when it passes through these resonances). Venting after power loss is also important to prevent backstreaming from the backing pump, if vacuum is left on the turbo after power failure oils or debrises from the backing pump could be sucked back into the turbo pump. We recommend a vent valve and or a roughing line normally closed (N.C.) isolation valve to protect the turbo during power failure. This kit includes the hardware needed to mount to the side of a the Agilent Varian turbo pump. It is designed to plug into the back side of the Agilent Varian rack-mount turbo pump controller, see J4 PURGE VENT in center photograph, and have Agilent Varian Part Number X3501-68002. Please see the available instruction manuals in our PDF download section Below.

Works with the following Agilent Varian turbo pumps:

• TwisTorr 404 FS
• TwisTorr 704 FS
• TwisTorr 804 FS
• Turbo-V 1001