DP Series (DP250T / 400T)

Multi-stage dry vacuum pump.

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DP Series

Explore our multistage chemical dry vacuum pump

HHV Pumps’ popular DP Series multi-stage dry vacuum pumps are tough, reliable systems. Built with a pair of lobes and a pair of claw rotors rotating synchronously within the pump casing, it effectively forms a suction and discharge operation. They are fully automated and self-sustained vacuum pumping systems.

The DP series come in two variations – 250T and 400T. Both are oil-free, non-contacting, four stage roots and claw profile make it more suitable for pumping air vapour mixtures. It also provides a consistent vacuum with high efficiencies, lowest cost of ownership with adequate safety and performance standards.

The TS version is a compact multi-stage dry vacuum pumping.

What makes the DP series vacuum pump stand apart?

  • Four Stage compression
    (only for DP400)

    Faster air removal and higher rate of compression.

  • Compact design

    Pump mounted on a stand-alone frame occupying a footprint <1sq.m

  • Vertical mount

    Self-draining technology and a vertical mount design make the pump more versatile and rugged.

  • Relief valve

    A third stage relief valve avoids high pressure build up within stage compression cycle, if the pump crosses 300mbar.

  • Cartridge-type inlet side bearing

    Grease lubricated roller bearing ideal for supporting radial loads. Easy replacement of inlet side roller bearing and seals without removing stages.

  • Angular contact bearing

    Double row angular contact bearings near the motor take care of simultaneously acting radial and axial loads.

Features of DP series

  • Intelligent In-direct cooling (Thermosiphon)

    Unidirectional flow of water through the heat exchanger will eliminate blockages that may occur in industrial water supplies. Cleaning the heat exchanger is also easier if clogging occurs, when compared to the clogging faced within the pump jacket.

  • Temperature Control System

    Extensive research and development at our fully fledged DSIR accredited inhouse R&D facility. Its performance is backed by customer feedback and aggressive testing.

  • Inlet purge

    Protection from process substances entering into the pump chamber and pipelines through purging a high-pressure nitrogen at the inlet.

  • Shaft seal purge –

    It is essential to maintain shaft seals at a positive pressure during operation helping to prevent entry of corrosive/toxic gases towards the pump gear cover.

    Life of shaft seals increases as we eliminate the risk of damage that may cause from debris or any other corrosive/toxic gases. A controlled and customizable feature helps the user to determine the purge frequency based on the usage and application.

  • Solvent purge

    Internal surfaces of the pump are more prone to corrosion and by-product settlement. This is prevented by running the solvent used for distillation. The solvent purge will rinse the pump internals and keep it safe from possible corrosion and process substances.

Typical Applications.