NST High Vacuum Diffusion Pumping System



High Vacuum Diffusion Pumping System

NST  Based High Vacuum Pumping system are used in both laboratory and industrial applications. The standard Vacuum Pumping Systems consists of Rotary Vacuum Pump, Diffusion pumps and other hardware like valves, baffles, collar, gauge and plumbing lines etc., fully integrated and wired. Special Vacuum Pumping Systems are offered with Rotary Pumps, Root Pumps & Diffusion pumps or combination as per customer requirements, Auto Manual Valves, Modular Structure etc The Vacuum Pumping Systems, are trolley mounted with castor wheel for easy movement, and are capable of achieving an ultimate vacuum of 10-6 m.bar. Liquid nitrogen trap given as optional is to minimize the back-streaming of oil vapors, and ensures clean and better ultimate vacuum of 10-6m.bar range. The vacuum pumping systems are fitted with Pirani Gauge to measure the roughing and backing vacuum & Penning gauge for measuring the high vacuum. Option is available for Digital & Analogue type of gauges.


  • All components easily accessible
  • Compact construction
  • Simple operation
  • Allows direct connection of Vacuum Chamber
  • Pumping speed ranging from 120 lps to 3000 lps
  • Ultimate (Unbaffled) vacuum better than 10-6 m bar (with LNT)
  • D.P., baffles, valves, collar & plumbing are S.S. construction Optional      Optional accessories
  • Liquid Nitrogen Trap given as optional.
  • Water Cooled Chevron Baffle given as optional.
  • Electro pneumatically operated valve. (Butterfly valve, Rightangle Valve)
  • Push buttons, automatic versions are available on request

Technical Specifications

D P Model Type OD-75 OD-114D Diffstak OD-114D Diffstak OD-250D Diffstak
Pumping speed (L/S) Unbaffled with DC-704 Oil 150 280 1000 3000
Rotary Backing Pump capacity (L/M) 200 200 320 1000
High vacuum Valve Size( Inch) 3” 4” 6” 10”
Vent & gas inlet valve Manual 6 mm Manual 6mm Manual 6 mm Manual 6 mm
Roughing & backing valve size ( Inch) 1″ 1″ 1″ 2″
Ultimate Vacuum mbar ( with LN Trap filled) 5X 10(-6) 5X10(-6) 5X10(-6 5X10(-6)
Inlet Collar Size 75 mm 114mm 150mm 250 mm
Utility Required Power 230V, 50HZ, 1phase, 10A 230V, 50HZ, 1 phase 10A 230V, 50HZ, 1 phase 10A 440V, 50 HZ, 1phase, 10A
Water 2 L/m 2 L/M 4 L/M 10 L/M
Cooling Media for DP Air/Water Water/td> Water Water
Vacuum measuring gauge Digital Digital Digital Digital
Vacuum gauge Type Pirani, penning Pirani, penning Pirani, penning Pirani, penning
Provision available Vent valve, gas inlet fine controle valve, LN Trap, Thermostat.

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