The Agilent NHS-35 oil diffusion pump is a pump with high throughput and high pumping speed of 28,000 L/s.

With its fully optimized vapor jet, robust boiler design and thermal protection switches, the pump will run without any maintenance for many years.

It is available with 35 in. ASA or ISO 1000F (bolted) inlet flange.

This pump is a perfect fit for industrial applications such as vacuum furnace, heat treatment, metallizing, and coating processes for optical lenses, electronics and protective film layers.

 

 

 

 

Features

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• -Five-stage fractionating jet purifies pumping fluid
• -Fill and drain assembly allows for easy exchange of pump fluid
• -Robust boiler design
• -Stable and reliable under widely varying operation conditions
• -High forepressure tolerance
• -Low ultimate pressure
• -High throughput with high pumping speed
• -Fluid level sight glass provides quick indication of pump fluid status at all times

 

 

 

Information

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Backstreaming Rate	5 x 10-4 mg/cm²/min
Cooldown Time	60 min
Electrical Requirements	50/60 Hz 240/415/480 V
Fluid Charge	11356 CC
Fluid Type	Oil
Input Voltage	200, 240, 380, 400, 415, 440, 480, 575 V
Maximum Forepressure - Full Load	0.40 Torr 0.52 mbar
Maximum Forepressure - No Load	0.55 Torr 0.71 mbar
Maximum Throughput	25 T-L/s (33 mbar-L/s)
Operating Range	9 x 10-4 to < 5 x 10-8 Torr 1.2 x 10-3 to < 6.5 x 10-8 mbar
Pump Power	24000 W
Pump Weight	1500 lbs 680.4 kg
Pumping Speed - Air	28000 L/s
Pumping Speed - Air, via AVS 4.1 (1963)	50000 L/s
Pumping Speed - He/H2	35000 L/s
Recommended Backing Pump	≥ 300 cfm (510 m3/hr)
Warmup Time	60 min
Water Connections	3/8 inch FPT
Water Cooling - Temperature Requirement	60-80 °F 15-26 °C
Water Cooling Flow Requirement	4.0 gpm 800 L/hr