DS402 Rotary Vane Vacuum Pump, Varian (CAT#: STEM-GLEPO-1514-ZJF)

The manufacturer of the DS402 Rotary Vane Vacuum Pump is Varian.
Refurbished Varian DS-402 rotary vane vacuum pump (m/n 949-9330). Optional: mist filter & oil recovery system.

Condition: Refurbished, Certified Pre-owned
Dimensions (WxHxL): 164 mm x 242 mm x 541 mm
Exhaust Connection: 25KF DN
Free Air Displacement:
50 Hz: 342 L/min
60 Hz: 410 L/min
50 Hz: 20.5 m³/h
60 Hz: 14.5 cfm
Height: 242 mm
Inlet Connection: 25KF DN
Input Voltage:
1 phase motors 100-120/200-230V ±10%, 50/60 Hz
3 phase motors 200-220/380-415V ±10% at 50 Hz
3 phase motors 200-230/460V ±10% at 60 Hz
Length: 541 mm
Oil Capacity Min/Max: 0.5 / 1 l
Pumping Speed (50 Hz): 17.4 m3/h
Pumping Speed (60 Hz): 12.3 cfm
Rotational Speed at 50Hz: 1500 rpm
Ultimate Partial Pressure: 10-4 mbar
Ultimate Total Pressure with Gas Ballast: 1∙10-2 mbar
Water Vapour Pumping Capacity: 350 g/h
Water Vapour Tolerance: 30 mbar
Weight: 35 kg
Width: 164 mm

Dual Stage design allows low 10-3 mbar operation, low operating temperature, minimal backstreaming at low pressure, good pumping efficiency and gas ballast in the low 10-2 mbar region
Worldwide motors available as 1-phase or 3-phase, are suitable for all voltages and frequencies worldwide. Operational voltages are easily selectable, allowing greater flexibility, easy planning and inventory reduction
The antibackstream valve and vent device isolates the pump should it stop or be idle, it also prevents inadequate venting and oil contamination of the vacuum system when the pump is switched off, or in case of power fail
Socket type IEC320 permits use of standard power cable and eliminates the need to open box and wire the motor
Gas ballast valve when opened injects dry air into the second stage of the pump, this action increases the temperature of the module which facilitates the outgassing and clean up of water vapor or other condensable gases from the oil

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