ELSO Technologies Sdn Bhd
8E, First Floor,
Jalan Tun Dr. Awang,
Bukit Jambul,
11900 Bayan Lepas,
Penang, Malaysia.
+604-6301166
+604-6301167
+604-6301168
sales@elsotech.com

Mr Kwang (General Manager)
+6016-422 8644
 
+60164228644

Johor Branch
Lake View Apartment,
Jalan Austin Perdana 1,
Taman Austin Perdana,
81100 Johor Bahru,
Johor, Malaysia.

Chong CW (Sales Manager)
+6012-4767747
cwchong@elsotech.com

Selangor Branch
Puchong, Selangor.

Glenys Teoh (Sales Manager)
+6018-2810168
glenysteoh@elsotech.com

East Malaysia Branch
Lot 35, Lot 5277,
Lorong 9C1, Jalan Kapor,
93150 Kuching,
Sarawak, Malaysia.

Clement Lau (Sales Engineer)
+6019-8497663
clementlau@elsotech.com

ELSO Technologies Pte Ltd
Singapore Branch

1 Coleman Street
#10-06 The Adelphi
179803 Singapore.

Chew Peng Seng  (Sales Manager)
+65 9663 8176
pengseng@elsotech.com

NHS-35

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NHS-35 Diffusions Pumps Agilent Technologies


Available in 2 in. and 16 in. through 35 in. sizes, the low-cost HS-series pumps provide high speed, low ultimate pressure, high throughput, high tolerable forepressure, and low backstreaming. The HS-Series diffusion pumps come with full thermal protection and optional quick-cool coils. The 16 in. through 35 in. pumps come with sight glass/fill and drain assemblies, and are available with ASA or ISO flanges.
  • Five-stage stainless steel fractionating jet purifies fluid.
  • High tolerable forepressure.
  • Full thermal protection.
  • Fluid-level sight glass provides quick indication of pump fluid status at all times.
  • Foreline baffle prevents fluid loss to backing system.
  • Optional halo baffle cold cap reduces backstreaming without adding height.
  • Standard gauge port (NW-25) below inlet flange included.
  • Optional quick cool coil.
  • Please note that this item is controlled for export by the Nuclear Suppliers Group. Accordingly, you may be required to obtain an export license from the U. S. Department of Commerce prior to exporting this pump from the United States. Please consult the U. S. Export Administration Regulations, ECCN 2B231, for further guidance.

Technical Specifications

Pumping Speed, Operating Range Pumping Speed, AVS 4.1 (1963) 28,000 l/s air, 35,000 l/s He and H2 50,000 l/s Air
Maximum Throughput 25 T-l/s (33 mbar l/s) in operating range, 35 T-l/s (45 mbar-l/s) @ 0.01 torr
Operating Range 9 x 10-4 to < 5 x 10-8 torr (1.2 x 10-3 < 6.5 x 10-8 mbar)
Maximum Forepressure No Load – 0.55 torr (0.71 mbar), Full Load – 0.40 torr (0.52 mbar)
Recommended Backing Pump ≥ 300 cfm (510 m3/hr)
Backstreaming Rate, Standard Cold Cap <5 x 10-4 mg/cm2/min
Warmup Time 60 minutes
Cooldown Time 180 minutes
Fluid Charge 3 U.S. gallons (11.3 liters)
Electrical Requirements 3 ph, 50/60 Hz, 240/415/480 VAC
Pump Power 24,000 watts
Cooling Water Requirements 4 gpm (800 l/hr) at 60-80°F (15-26°C)
Recommended Fluid DC-704

 

Speed Curve Graph

NHS-35 Diffusion Pump Speed Curve Graph

Pumping Speed/Cold Cap Pumping speed/Halo Baffle Throughput

 

Outline Drawing

NHS-35 Diffusion Pump Outline Drawing
 


Ordering Details
Description Voltage Weight kg (lbs) Part Number
HS-35 Pump     Flange Type
Electrical Requirements     ASA ISO
NHS-35 with standard cold cap 240 V 680.0 (1,550.0) F1730308 L5924308
NHS-35 with halo baffle 240 V 680.0 (1,550.0) F1730318 L5924318
NHS-35 with standard cold cap 415 V 680.0 (1,550.0) F1730326 L5924326
NHS-35 with halo baffle 415 V 680.0 (1,550.0) F1730336 L5924336
NHS-35 with standard cold cap 480 V 680.0 (1,550.0) F1730309 L5924309
NHS-35 with halo baffle 480 V 680.0 (1,550.0) F1730319 L5924319
Accessories Weight kg (lbs) Part Number
Water-cooled halo baffle 20.0 (45.0) K1857335
Quick cool coil must be installed in the factory, can not ship separately   F1739001
Centering ring for ISO foreline flange, 200K 0.5 (1.0) IC200SV
O-ring, ISO Inlet flange 0.5 (1.0) 78536002
Instruction manual   699901140
Replacement Parts (six heaters required per pump)
Heater 4000 W, 240 V/480 V with leads 0.5 (1.0) 647335010
Heater 4000 W, 240 V/480 V no leads used on pumps built before May 90 0.5 (1.0) 647235248
Heater, 4000 W, 200 V 0.5 (1.0) 647335020
Heater, 4000 W, 400 V 0.5 (1.0) L6383010
Heater, 4000 W, 440 V 0.5 (1.0) L6383011
Heat shield (reusable) 0.5 (1.0) L6370001
Heater clamping plate (six required per pump) 4.0 (8.0) F1749001
Heater insulator (one required per pump) 0.5 (1.0) L9699001
Replacement o-ring kit for ASA pumps (kit contains: 1 inlet flange o-ring (buna 78536001), 1 foreline flange o-ring (butyl 2-267), sight glass o-ring and gasket, 8 fill and drain o-rings (Viton 2-213)) 0.5 (1.0) K0377169
Sightglass service kit (pumps built before Oct. 95) 1.5 (3.0) F6097301
Upper (water) thermal switch (set at 200° F/93 °C) 0.5 (1.0) K9050005
Lower (boiler) thermal switch (set at 600° F/316 °C) 0.5 (1.0) K9050006
Cold cap gasket/grommet (kit of 4) 0.5 (1.0) L8839301
Cold cap nut and follower (2 each) 0.5 (1.0) L8840301
Heater Retrofit Kit (for pumps built before May 90; clamping plates not included)
NHS-35, 240/400/440 18.16 (40.0) L6391308
NHS-35, 415 18.16 (40.0) L6391326
NHS-35, 480 18.16 (40.0) L6391309
 

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