TANK MIXING EDUCTORS
Whatever your chemical solution may be, a tank mixing eductor that will greatly enhance the ability of your pumping system to properly circulate that solution. Eductors are constructed of polypropylene, PVDF, cast iron, alloy 20 and 316SS.
Most of the applications that we have experienced in the past will see the following results with just the addition of eductors:
|HOW EDUCTORS WORK:
As the solution is pumped through an eductor's orifice, a low pressure area is created that acts to pull solution from behind the bell shape of the eductor and direct the solution out of the bell end. For each gallon of solution that is pumped through the eductor, three or four gallons of additional solution is circulated within the tank. As one of the most cost-efficient and effective ways for manufacturers to get the best performance from their re-circulating process tanks, it is easy to see why tank mixing eductors are the design of choice for all major manufacturers.
|Eductors are currently installed in the following types of re-circulating process tanks:|
Performance The flow rate through the eductor is dependent upon the pressure available from the circulation pump. Most systems are the most energy efficient in the 10 to 15 PSI areas. (23 to 35 feet of pressures). The ratio of pumped vs. circulated will remain the same independent upon the amount of solution being pumped through the nozzle (orifice).
The below chart is for polypropylene or PVDF eductors only. Similar results will be obtained with the metal material eductors. For lower pressures performance
|Size - orifice and NPT connection||Pressure (PSI) - To convert to TDH multiply by 2.31|
|Nozzle Flow (USGPM)|
Example for above chart: Using the .48" eductor, with 15 PSI pressure available, the flow rated through the nozzle will be 25 GPM - The total amount circulated will be 125 GPM
Penductors** The above .30" orifice eductor is NOW available in a shorter profile
with 3/4"MNPT or 1" NPT connections -- save installation time and tank
space. This product is not available from BEX, Serfilco or Spraying Systems !!
|Molded Thermoplastic Eductors - polypropylene
and PVDF (Kynar)
Investment cast 316 SS 3/8" 1 ½" provide 5 gallons of solution movement for each gallon pumped through the eductor.
Sand Cast Metals Cast Iron Alloy 20
316SS (2" and 3" only) provides 4 gallon of solution movement for
each gallon pumped through the eductor.
|This diagram shows how eductors are used to promote circulation across a rectangular tank bottom and direct this flow toward the pump intake. Of course, there are numerous possibilities to achieve quite dramatic results when eductors are used in combination with adjustable joints which allow for ultimate "fine tuning" of your systems flow. In any case, contact KTH Sales to determine the configuration which best suits your specific needs. Pumps and inline filtration systems can be supplied for most applications.|
Note: Most plating solution agitation applications will use 3/8" orifice eductors - solution MIXING applications is dependent upon the size of the tank and the performance of the pump.
|Pipe Size||Length||Largest OD|
|3/8" NPT Male||4 1/2"||2-1/8"|
|Above performance in short profile - with 3/4" or 1" MNPT||3 7/8"||2-1/8"|
|¾" NPT Male||6 3/8"||3"|
|1" NPT Male||8 1/2||3"|
|1-1/2" NPT Male||9 7/8"||4-5/8"|
Note: Cast metal eductors are available in the above
sizes and in 2" and 3" NPT.
Pre Engineered Systems
Penguin Pumps supplies pre engineered systems using P-Series pumps and Penductors - details
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