Varian VHS-4 Vacuum Diffusion Pump ASA-4"

Posted by:

testeqe

Location:

Arizona

Ad Status:

SOLD

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Description:

Varian VHS-4 4" Water-Cooled Diffusion Pump

The unit is believed to be rebuilt by PTB-Sales. It looks extremely clean minus a various scratches to the paint. There is no oil in this pump.

The Unit's Serial Number Tag Reads:
Model Number: VHS-4
Part Number: L6260-301
Serial Number: LDK00182
Fluid Charge: 300 CC
CE Marked: Yes
Power Requirements: 120 Volts, 1450 Watts

Description:
The Varian Model VHS-4 Diffusion Pump delivers the highest pumping speed of all diffusion pumps in its class. This particular pump has a 4-inch ASA inlet flange with a NW40 KF foreline flange. Its fractionating jet purifies the pumping fluid as it operates. Its finned boiler increases the heated surface area, which prolongs the life of the pumping fluid.

Key Features:
# Includes a sight glass for convenient monitoring of pumping fluid level

# High tolerable forepressure

# All stainless-steel construction

# Full thermal protection from overtemperature

# Quick-cool coil is standard

# Optional extended cold cap reduces backstreaming (I am not sure if it has this option)

# Foreline baffle prevents loss of fluid to the backing pump

# Tee-type water connections ease the cleaning of the cooling coils