Eductors / Venturis

Where there is no site vacuum present on site, CRP can supply sampling systems that use compressed gas to power a a venturi to 
create a vacuum within the vessel sampler sightglass chamber to draw a sample up through the dip pipe from the vessel. 

   
 
Venturis are named after the Italian physicist Giovanni Battista Venturi (1746-1822) who discovered that passing a fluid through a tube with a constricted throat brought about an increase in velocity through the restriction with a consequent drop in pressure at the entrance to the throat.

This principle is used in modern day eductors, the pressure drop being so much as to create a vacuum, depending on eductor choice this vacuum created can be surprisingly high, drawing a column of water 5m high is not uncommon.

CRP use eductors on vessel samplers when a vacuum service is not available, they are connected directly to the top manifold of the sampler. The compressed gas is controlled with a ½"NB ball valve mounted rigidly to a stainless steel bracket. The exhaust gas can be vented to a scrubber system or piped back into the vessel if required. 


For further information please contact our sales office on 01706 756 400 or enquiry@crp.co.uk

Contact Details

Corrosion Resistant Products Ltd
Todmorden Road
Littleborough
OL15 9EG

Phone: +44(0)1706 756400
Fax: +44(0)1706 379567
Email: