Vacuum Technologies 

Turbo Pumps 

TwisTorr 304 FS 
Product Description
The Agilent TwisTorr 304 FS turbomolecular high-vacuum pump combines Twistorr drag stage technology and Agilent Floating Suspension to provide high performance, reliability and economy. TwisTorr drag stages create high compression ratios for light gases such as Hydrogen and Helium to deliver high throughput and high tolerance of foreline pressure, thereby permitting the use of smaller and more economical backing pumps.  This technology results in a compact rotor design that is energy-efficient and maintains a low operating temperature. The Agilent Floating Suspension system reduces noise and vibration, and ensures optimal bearing operating conditions to extent operating life, minimize system downtime, and assure stable pumping performance over time.  The unique bearing and dry lubrication in the TwisTorr 304 FS eliminate oil and maintenance, and permit operation of the pump in any orientation. Available with on-board or rack controllers.
  • Innovative TwisTorr technology - High compression ratio for light gases and very compact rotor design provides high performance and minimal system footprint.
  • High Foreline Tolerance - Permits use of smaller backing pump, thereby reducing system cost and size.
  • Agilent Floating Suspension - Low vibration and acoustical noise, optimal bearing working conditions, extended operating life all optimize cost-of-ownership, minimize system downtime, and assure stable performance over time.
  • Unique bearing & dry lubrication - Maintenance free, oil free; allows installation in any orientation.
  • Copper water cooling channel (optional) - Eliminates corrosion risk and optimizes heat transfer, and reduce water consumption and cost-of-ownership.
  • Typical Turbo Pump Applications

Technical Specifications

Pumping speed

ISO 100 / CF 6”

ISO 160 / CF 8”


250 l/s

250 l/s


255 l/s

255 l/s


220 l/s

220 l/s


250 l/s

250 l/s

Gas throughput at full rotational speed (with recommended forepump)

Ambient Temp.

Water Temp.
(25°C, 50 l/h)


170 sccm

170 sccm


110 sccm

110 sccm

Compression ratio & Foreline Tolerance


> 1 x 1011

>10 mbar


> 1 x 108

>10 mbar


1.5 x 106

>4 mbar


> 1 x 1011

>10 mbar

Base pressure with recommended forepump (5 m3/h)

< 1 x 10-10 mbar  (< 1 x 10-10 Torr)

Inlet flange

CFF 8” O.D. ISO 160

CFF 6” O.D. ISO 100

Foreline flange

KF16 NW (KF25 - optional)

Rotational speed

60000 rpm (1010 Hz driving frequency)

Start-up time

< 3 minutes

Recommended forepump


Agilent DS 102

dry pump:

Agilent SH 110

Operating position


Operating ambient temperature

+5 °C to +35 °C

Relative humidity of air

0 - 90 % (not condensing)

Bakeout temperature

80 °C at inlet flange max (ISO flange)

120 °C at inlet flange max (CFF flange)


Permanent lubrication

Cooling requirements

Forced air (5- 35 °C ambient temperature)

Water (mandatory if ambient temperature > 35 °C)

Coolant water

Minimum flow: 50 l/h (0.89 GPM)

Temperature: +15 °C to +30 °C

Pressure: 3 to 5 bar (45 to 75 psi)

Noise Pressure level

< 50 dB(A) at 1 meter

Storage temperature

-40° C to +70° C

Max altitude

3000 m

Weight kg (lbs)

Pump ISO 100

5.5 kg (12.3)

Pump CFF 6’’

7.5 kg (16.5)

Pump ISO 160

5.7 kg (12.6)

Pump CFF 8’’

9.7 kg (20.9)

Outline Drawing ISO 100

TwistTorr 304 FS ISO 100 Turbo Pump Outline Drawing

Outline Drawing CF 6”

TwistTorr 304 FS CF 6” Turbo Pump Outline Drawing


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              Description Part Number
              Pumps TwisTorr 304 FS Turbo Pump, ISO100, water cooled X3500-64000
              TwisTorr 304 FS Turbo Pump, CFF6, water cooled X3500-64001
              TwisTorr 304 FS Turbo Pump, ISO160, water cooled X3500-64002
              TwisTorr 304 FS Turbo Pump, CFF8, water cooled X3500-64003
              TwisTorr 304 FS Turbo Pump, ISO100 X3500-64004
              TwisTorr 304 FS Turbo Pump, CFF6 X3500-64005
              TwisTorr 304 FS Turbo Pump, ISO160 X3500-64006
              TwisTorr 304 FS Turbo Pump, CFF8 X3500-64007
              TwisTorr 304 FS SF Split Flow Turbo Pump, ISO100, water cooled X3500-64010
              Controllers TwisTorr 304 FS Onboard controller, 24Vdc X3507-64002
              TwisTorr 304 FS Onboard controller, 100-240Vac X3507-64003
              TwisTorr 304 FS AG rack controller with RS232/485 X3506-64002
              TwisTorr 304 FS AG rack controller with Profibus X3506-64003
              Accessories Mains cable NEMA Plug, 3m long 969-9958
              Mains cable European Plug, 3m long 969-9957
              Serial cable and T-Plus Software 969-9883
              Inlet screen, ISO 100 X3500-68000
              Inlet screen CFF 6’’ 969-9302
              Inlet screen, ISO 160 X3500-68001
              Inlet screen CFF 8’’ 969-9304
              Water cooling kit 969-9337
              Plastic water cooling kit 969-9347
              Air cooling kit for On-board Controller X3500-68010
              Fan extension cable, On-board controller 969-9949
              Fan extension cable, rack AG controller 969-9940
              Air cooling kit for Rack AG Controller X3500-68011
              Bracket for On-Board Controller side mounting X3500-68012
              Foreline flange KF25 1/4 gas 969-9130
              Purge valve 10 SCCM ¼ Swagelok – ¼ Swagelok 969-9232
              Purge valve 10 SCCM ¼ Swagelok – M12 969-9240
              Purge valve 10 SCCM NW16KF – M12 969-9239
              Purge valve 20 SCCM ¼ Swagelok – ¼ Swagelok 969-9236
              Purge valve 20 SCCM ¼ Swagelok – M12 969-9242
              Purge valve 20 SCCM NW16KF – M12 969-9241
              Vent device with adjustable delay time (110-220V) X3505-68000
              Vent flange, NW 10 KF / M8 969-9108
              Vent valve for AG Rack Controller 969-9844
              Vent valve for on-board Controller 969-9834
              Vibration damper, ISO 100 IDX 969-9396
              Vibration damper, CF 6" 969-9334
              Vibration damper, CF 8" 969-9335
              Vibration damper, ISO 100 969-9344
              Vibration damper, ISO 160 969-9345
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