Venturi Eductors

cpvc venturi eductor

 CPVC Venturi


Venturi Eductors

Works by forcing water through a conical body which initiates a pressure differential between the inlet and outlet ports.  This creates a vacuum inside the injector body, which creates suction at the injection port.  The chemicals that are injection are rapidly dispersed through this high velocity “rapid mix” section.


  • Can be used for drawing liquids into a chemical feed system without the use of a pump
  • High chemical diffusion (up to 95%)
  • Excellent choice for gas/liquid injection (Ozone, CO2, Oxygen, Air)
  • Does not easily plug or lose efficiency over time compared to a porous injector        
  • No moving parts
  • Low cost

flanged SS venturi eductor


Flanged SS venturi eductor

Eductor Specifications and Sizing Guide

eductor drawing       Eductor Performance Data      Eductor Sizing

Select an image Download:

Eductor Drawing (52 kb)  

Eductor Performance Data (32 kb)

Eductor Sizing Guide (31 kb)

SS stainless venturi eductor w unions


kynar pvdf eductor venturi

Kynar (PVDF) Venturi Eductor


PVC Venturi Eductor


PVC Eductor

pvc eductor



Dilution System Using a Venturi Eductor

The dilution system shown below is for diluting 12.5% sodium hypochlorite (NaOCl) to a more stable 3-5% concentration solution for potable water disinfection.  The eductor combines the two flows of potable water and concentrated NaOCl and thoroughly mixes the flows before being stored in a storage tank.Turning the dilution system on is simple.  The water valve is turned on.  This motive water will draw the concentrated NaOCl from a tank or carboy without the use of pumps.

Bulk sodium hypochlorite dilution system

Drawing of eductor based dilution system  pdf  Eductor based dilution system panel (21 kb)

Batch Mixing Using a Venturi Eductor

Mixing chemicals with venturi eductor--batch process

Download Batch Dilution Diagram

Download Batch Dilution Drawing Download Batch Dilution Diagram (25 kb)

 powder eductor for wetting a granular powder

Powder Eductor for wetting granular chemicals in a recirculating tank

Chemical Injection and Sampling
Chemical Injection and Sampling
Chemical Injection and Sampling
Chemical Mixing
Chemical Mixing
Liquid into Gas
Liquid into Gas
Gas into Liquid
Gas into Liquid
Concentrated Acid Solutions
Concentrated Acid Solutions