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.

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

Part Number Variant

MSPLD10786 NHS-35 diffusion pump, ISO 1000F, with standard cold cap, 240 V, 24000 W, with oil temperature sensor 240 V
L5924318 NHS-35 diffusion pump, ISO 1000F, with halo baffle, 240 V, 24000 W 240 V
L5924308 NHS-35 diffusion pump, ISO 1000F, with standard cold cap, 240 V, 24000 W 240 V
F1730308 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 240 V, 24000 W 240 V
F1730318 NHS-35 diffusion pump, 35 in ASA, with halo baffle, 240 V, 24000 W 240 V
MSPLD10887 NHS-35 diffusion pump, 35 in ASA, with halo baffle, 380 V, 24000 W 380 V
MSPLD10816 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 380 V, 24000 W 380 V
F1730363 NHS-35 diffusion pump, 35 in ASA, with halo baffle, 400 V, 24000 W 400 V
F1730362 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 400 V, 24000 W 400 V
L5924336 NHS-35 diffusion pump, ISO 1000F, with halo baffle, 415 V, 24000 W 415 V
L5924326 NHS-35 diffusion pump, ISO 1000F, with standard cold cap, 415 V, 24000 W 415 V
F1730326 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 415 V, 24000 W 415 V
F1730336 NHS-35 diffusion pump, 35 in ASA, with halo baffle, 415 V, 24000 W 415 V
F1730365 NHS-35 diffusion pump, 35 in ASA, with halo baffle, 440 V, 24000 W 440 V
F1730364 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 440 V, 24000 W 440 V
L5924364 NHS-35 diffusion pump, ISO 1000F, with standard cold cap, 440 V, 24000 W 440 V
MSPLD10747 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 460 V, 24000 W, with oil temperature sensor 460 V
L5924319 NHS-35 diffusion pump, ISO 1000F, with halo baffle, 480 V, 24000 W 480 V
L5924309 NHS-35 diffusion pump, ISO 1000F, with standard cold cap, 480 V, 24000 W 480 V
F1730309 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 480 V, 24000 W 480 V
F1730319 NHS-35 diffusion pump, 35 in ASA, with halo baffle, 480 V, 24000 W 480 V
MSPD10891 NHS-35 diffusion pump, 35 in ASA, with standard cold cap, 575 V, 24000 W 575 V

New, factory warranted pumps available.

Price: POA, please contact us for latest prices

Manual

View Manual

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

Service Information

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