EDUCTOR VS EJECTOR ISO

Generally, with our standard Line Vacs, we use our test data with estimated conveyance rates, inlet flow rates, and vacuum pressures measured at 80 PSIG (5.5 bar).

Once the customer approved, EXAIR had to make a strong effort to meet the other criteria that was requested. Since the accuracy of the test is dependent on the amount of each gas, we had to test the operations of the Line Vacs at different conditions.įirst, EXAIR designed these special Line Vacs to get approval. They would supply nitrogen to the inlet port as a carrier gas to generate the venturi and to mix with the sample gas.

EDUCTOR VS EJECTOR ISO

They required ISO flanges on the vacuum and exhaust sides to match their piping connections for gas sampling. In this blog, I will cover the design, verification, and testing that EXAIR provided for a customer’s special.įor this customer, the design was based around our 2” and 1” 316SS Line Vacs. EXAIR Line Vacs work on this same principle in creating a Venturi vacuum by using compressed gas. (You can read more about the person here, “ People of Interest: Giovanni Battista Venturi Ma– ApBy Tyler Daniel”.) They can be used for vessel evacuation, gas sampling, pump priming, venting, and blending. Eductors use either compressed gas or liquid to generate a vacuum by a Venturi effect which is based on Bernoulli’s equation. Note: I have tried best to answer your queries.Here is a question what is an eductor? Eductors are also called ejectors, Venturi jets, aspirators, jet mixers, or jet pumps. Thanks to their low cost and having no moving parts they are widely used as the main pump in hazardous areas.įurther on the ship, they are used as the priming pump for centrifugal pumps, as stripping pump in ballast management, In vacuum toilets, In generating a vacuum in a freshwater system, pumping out slurries and residue in oil tanker. They are used for handling solid waste in granular form or slurries, mixing of liquids, create vacuum, agitate liquid and pumping operations. There are a ton of applications for Eductors in various industries where they want a low-cost alternative for the centrifugal pumps. Low compression ratio What Is An Eductor Used For? This remains constant through out the flow and can be written as,ħ. This can be easily explained by using conservation of mechanical energy. Reason Behind Suction In Eductor PumpsĪn educator pump works on the Bernoulli principle which states that the speed of the fluid in a medium increases simultaneously with a decrease in pressure. This is why eductor pumps are used for soil stabilization, in chocked drainage systems, drilling operations, cleaning operations and various other on site applications.

Further, it suits well over low to very high viscous fluids and does not require a prime mover or electricity to operate. It is one of few pumps with no vacuum limit and can work with medium containing metal/solid contaminants that would otherwise damage a regular pump. They came out quite handy in stripping operations in tanks, deep wells and sumps. One can operate as much as 150 eductor pump at a time under varying vacuum conditions. The most prominent and common reasons are its low operation cost, scalability, and ability to allow vacuum-assisted pump operation. There are clearly some clear advantages of using eductor that makes them suitable for pumping operation under certain conditions. What Is An Eductor Used For? Advantage of Using Eductor Over Regular Pumps.Difference Between An Eductor And An Ejector.Advantage of Using Eductor Over Regular Pumps.The diameter of the nozzle assembly depends on the suction requirement, pressure drop, and motive fluid pressure. While the diameter of the Educator assembly ( mainly suction chamber ) depends much on the volumetric flow rate of the working fluid. Some of the advantages of the Eductor pump that make them unique are no moving parts, low cost, self primed, can be used against corrosive materials, simple construction and are idle for hazardous areas or fluid exposed to risks of explosion. Thus producing the pressure difference required for suction. Here high-pressure low-velocity fluid is converted to low-pressure high-velocity fluid. The pump consists of a suction chamber, a nozzle input, suction point, and discharge point. It is a type of jet pump used to pump out liquid/sediments where the suction head is too low for the normal pump to operate.īased on the venturi effect and Bernoulli principle here primary fluid medium ( water / Same fluid ) is used to create a vacuum to suck in the secondary air, gas or liquid.īecause of its simple construction and no moving parts, it’s used in hazardous areas, ships, and industries involving extraction of the high volume of debris. An Eductor is a device that works on the venturi effect for pump operation.

Eductor vs ejector