AODD pumps

dda_industrial_plast 750

ASTRA: wide range of thermoplastic and metal constructed pumps.

The proprietary design of the pumps was conceived by Argal staff with specific experience on AODD pumps; it  pivots around improved air distributor system,  optimised geometries of diaphragms air and liquid chambers and aims to broaden the traditional range of application of these pumps from simple transfer to transfer and metering.This ability was achieved implementing conventional and innovative solutions.


ASTRA AODD pumps with sizes from ½” to 2” offer incresed flow compared to common pumps of the same size. This translates in an economical advantage for smaller and less expensive pump delivers equal performances or in technical advantage for same pump size delivers same performances at lesser strokes per minute with reduced mechanical stress and wear of all parts. For these reasons the user enjoys longer operational life, lesser LCC ( Life Cycle Cost ) less vibration and attenuated noise compared to conventional pumps.


All ASTRA pumps can be preset to ;

  • Operate at extra low pressure with diaphragms’ actuation circuit independent from pilot command circuit;
  • Detect the number of pumping cycles by normalised probe.
  • Supply pneumatic signals in response to the end of run positions reached by the diaphragms;.
  • Operarte as pumps submerged in the liquid pumped ( optional configuration ).

Auxiliary connections to implement the a.m. optional features and modes of use are lodged in the technical panel placed near the air exaust.

Customised layout for hydraulic connections

Hydraulic connections of Astra pumps can be configured accordingly to several schemes;
The standard scheme foresee one manifold with horizontal lateral inlet and one manifold with horizontal lateral outlet;
The optional schemes foresee one manifold with horizontal inlet and one manifol with horizontal outlet, or a  mix of the two types.

Drum pump version

It is a special version fitted with optional suction pipe long up to 2 metres, made of same wet materials as the pump and allows to prime from drums pure and viscous chemicals even in hazardous enviaronment.