TwisTorr 804 FS

The Agilent 800 L/s turbomolecular pump, TwisTorr 804 FS, combines TwisTorr drag stage technology and Agilent Floating Suspension (FS) to provide high performance, reliability and economy. This turbo pump delivers high vacuum performance thanks to the synergy between turbo technology and innovative TwisTorr drag stages. Floating Suspension assures low vibration and acoustical noise for compatibility with sensitive instrumentation and work environments.

This 800 L/s turbomolecular pump with ISO 200K, 250K and CFF 10 in inlet flanges, is perfectly suited for a wide range of applications, including research and development, UHV systems, nuclear research, ion implanters, surface analysis, electron microscopy, and cryogenics.

Product details Related Product


  • Innovative TwisTorr technology - high compression ratio for light gases 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 as well as optimal bearing working conditions extend operating life to optimize cost-of-ownership, minimize system downtime, and assure stable performance over time.
  • Unique bearing and dry lubrication - maintenance free, oil free; allows installation in any orientation.
  • “Three dimensional” pump control software provides maximum flexibility, speed, and simplicity - for the best throughput and compression performance according to the operating conditions of the pump.
  • Typical Turbo Pump Applications


Pumping speed: ISO200K-F ISO250K-F CFF10
N2 720 L/s
He 660 L/s
H2 485 L/s
Ar 690 L/s
Max Gas Throughput(*) Air Cooling Water Cooling
(25°C Air temperature) (15°C Water temperature / 25°C room temperature)
N2 4.3 mbarL/s 6.1 mbar L/s
255 SCCM 367 SCCM
He 7.9 mbar L/s 10.4 mbar L/s
467 SCCM 615 SCCM
Ar 1.5 mbar L/s 3.3 mbar L/s
89 SCCM 195 SCCM
(*) Backing pump 11.6 m3/hr
Compression ratio and foreline tolerance*
N2 >1E+11 10 mbar
He 2.00E+08 10 mbar
H2 3.00E+06 4 mbar
Ar 1.00E+11 8.5 mbar
(*) Foreline Tolerance defined as the pressure at which the turbopump still produce a compression of 100 and estimated in water cooling mode
Base pressure with recomm. forepump < 1 x 10-10 mbar
(< 1 x 10-10 Torr)
Inlet flange ISO 200K, ISO 200F, ISO 250K,
ISO 250F, CFF 10”
Foreline flange NW25 or NW40
Recommended forepump DS302
Operating position Any
Oper. ambient temperature +5 °C to +35 °C
Lubricant Permanent grease lubrication
Cooling requirements
Air cooling Air temperature from +5°C to 35°C
Water cooling Water temperature from +15°C to +25°C
Water flow min. 100L/h
Noise Pressure Level 43dB(A)
(at 1m at full speed)



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