This Agilent Varian Manual/Hand Operated Vent Valve device for Turbo Pump V301 has a Viton O-ring included. Its has knurled surface for easy turn. The vent valve and vent device allow to avoid undesired venting of the pump. Agilent Varian Part Number V301MV.

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.

Fitting Size NW KF-16 This is an extended length exhaust outlet for Agilent Twisttorr 84 FS turbomolecular pumps. The extended length provides extra clearance, easing access to rouging pump connections. The outlet connection is NW KF-16. Agilent Twisttorr 84 FS Extended Length exhaust outlet.Outlet Length:Outlet Connection: NW KF-16

These adapters are KF-25 to 1/4 in. NPT MALE pipe thread. They are commonly used to make connections between ISO-KF 25 and 1/4 inch NPT-Male pipe. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and rubber olastomer o-ring connect the flanges together. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel. Adapter KF-25 to 1/4 in. NPT-M Pipe, Stainless Steel Flange Size: ISO-KF NW-25 Pipe Thread: 1/4 in. NPT-MALE

Agilent Varian Part Number PN: 9699108 These Agilent Varian turbo pump vent flanges are designed to work with most Agilent turbomolecular vacuum pumps. They have KF-10 vacuum flange with M8 x 1.2 thread and Agilent Varian part number PN: 969-9108. Works with the following Agilent Varian turbo pumps:TwisTorr 404 FSTwisTorr 704 FSTwisTorr 804 FSTurbo-V 1001

These Agilent Varian turbo purge valves have a fixed 20 SCCM flow rate, a 1/4 Swagelok gas supply fitting, and are designed to work with most medium sized turbomolecular vacuum pumps which have an M12 vent port thread. Please see the second and third photos of the vent port and cartoon showing installation, instructions are also shown in the TwisTorr 305 FS manual on page 247. The gas purge valve is a protection device to protect the pump bearings against particulate and corrosive gases that could move into the pump. Every valve is made with a thin calibrate sapphire orifice mounted into a cartridge to provide a precise small leak rate, with two special PTFE membranes on each tube side. This is to avoid any particulate, powder and any liquid to come into and occlude the thin hole. Each version of the valve is suited for a particular application: - the Small leak (~ 10 sccm at 1000 mbar) for mild corrosive operation when the partial pressure of the corrosive gas is maximum 10-5 mbar (analytical instruments, ion implanters); - the Large leak (~ 20 sccm at 1000 mbar) for heavy corrosive operations (etching, CVD), when the partial pressure of the corrosive gas is

These Agilent Varian turbo purge valves have a fixed 10 SCCM flow rate, has 7/16 and 1/4 Swagelok gas supply fittings, and are designed to insert into the purge gas supply line of most medium sized turbomolecular vacuum pumps. Please see the second and third photos of the vent port and cartoon showing installation, instructions are also shown in the TwisTorr 305 FS manual on page 247. The gas purge valve is a protection device to protect the pump bearings against particulate and corrosive gases that could move into the pump. Every valve is made with a thin calibrate sapphire orifice mounted into a cartridge to provide a precise small leak rate, with two special PTFE membranes on each tube side. This is to avoid any particulate, powder and any liquid to come into and occlude the thin hole. Each version of the valve is suited for a particular application: - the Small leak (~ 10 sccm at 1000 mbar) for mild corrosive operation when the partial pressure of the corrosive gas is maximum 10-5 mbar (analytical instruments, ion implanters); - the Large leak (~ 20 sccm at 1000 mbar) for heavy corrosive operations (etching, CVD), when the partial pressure of the corrosive gas is

These Agilent Varian vent valves are designed for the TwisTorr FS and Turbo-V (with Integrated Controller or Onboard Navigator) turbo pumps. An adapter is also required so that the vent valve can get power and logic from the integrated controllers, the required adapter has Agilent Varian part number X3514-68001 (see center photograph). These Agilent Varian turbo pump vent valve kits have 1.2 mm orifice, 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. We also sell a vent valve extension cable 5 meters for these 305-IC vent valves, Agilent Varian part number 9699949, which would be used to control venting by logic from a local tool or laboratory instrument. Please see the available instruction manuals in our PDF download section below.