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Agilent VHS-400 - NEW

Manufacturer Part Number: K4816307
Price: $15,850.00
Agilent VHS-400 - NEW
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Agilent VHS-400 - NEW

Agilent Varian VHS-400 Diffusion High Vacuum Pump - NEW

  • Highest pumping speed available for its height
  • Fluid-level sight glass provides a quick indication of pump fluid status at all times
  • Fill and drain assembly for pump oil
  • High throughput, 5,100-watt version available
  • Four-stage fractionating jet purifies pumping fluid
  • High tolerable forepressure
  • Full thermal protection
  • Finned boiler increases surface area, prolonging pumping fluid life
  • Quick cool coil is standard
  • Foreline baffle prevents fluid loss into backing system

Questions? Please call our toll free number at 866-332-0500 or send an email to our sales team!

Agilent Varian VHS-400

Optimum operating range 1 x 10-3 to < 5 x 10-9 Torr
1.3 x 10-3 to < 6.5 x 10-9 mbar
Pumping speed (air), maximum 8,000 l/s (w/ standard cold cap)

Throughput (air), max. overload range @ 1 x 10-2 Torr (1.33 x 10-3 mbar)    

8 Torr-l/s
10.6 mbar-l/s
Forepressure, max. (5 Torr l/s (1.33 x 10−3 mbar))
No load

Full load

0.65 Torr
0.87 mbar
0.55 Torr
0.73 mbar
Backstreaming rate at pump inlet (within optimum operating range) < 1.0 x 10-3 mg/cm2/min (w/ standard cold cap)
Electrical requirements AC, 50/60 Hz, 3-phase 208V, 240V, 380V, 480V
Cooling water flowrate @ inlet temperature of 60 to 80 °F (120°F max.) .5 gpm (US)
Warmup time 17 min.
Cooldown time
w/out quick cool
w/ quick cool

65 min.
22 min.
Fluid charge 1,000 cc
Recommended backing pump capacity 30 cfm
Pressure drop across coils 6 psi
Heater circuit resistance L1-L2/L2-L3/L1-L3
19.6/19.6/39.2 Ohms at 208V
26.2/26.2/52.4 at 240V
65.6/65.6/131.2 at 380V
104.7/104.7/209.4 at 480V
Weight 180 lbs (81 kg)
Jet assembly 4-stage, self-aligning aluminum
Foreline baffle Stacked self-aligning half moon
Water connections 1/8" FPT
Thermal switches Manual reset at 300°F (148.9°C)
Clearance (for heater removal) 6" minimum
Materials Body - stainless steel
Flanges, foreline baffle - stainless steel
Body cooling coils - copper
Quick cooling coil - stainless steel
Cold cap - nickel-plated copper

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Agilent Varian VHS-400 Diffusion High Vacuum Pump - NEW

K4816307 / K4816-307  ASA w/ standard cold cap 208V
K4816326 / K4816-326  ASA w/ standard cold cap 380V
K4816309 / K4816-309  ASA w/ standard cold cap 480V
K4816308 / K4816-308  ASA w/ standard cold cap 240V
L9767307 / L9767-307  ISO w/ standard cold cap 208V
L9767326 / L9767-326  ISO w/ standard cold cap 380V
L9767309 / L9767-309  ISO w/ standard cold cap 480V
L9767308 / L9767-308  ISO w/ standard cold cap 240V