The tank eductor's motive fluid may come from two sources. The tank liquid may be recirculated through the eductor via an external pump or a secondary fluid may be introduced into the tank. Gases, as well as liquids, are used as the secondary fluid. Aeration and gas dispersion for chemical reactions are- common uses of gas motive systems. Liquids are typically additives to be mixed with or to dilute the tank contents. Tank eductors are often used in heating applications where the motive fluid is generally steam.
Tank Eductor (TLA) Features:
Standard features and available options
- Computer optimized flow paths enable the Jacoby-Tarbox eductor TLA to maintain a high "pick-up ratio" (the ratio of fluid entrained to the motive fluid) while maximizing the hydraulic efficiency (the ratio of hydraulic power at the outlet of the TLA to the hydraulic power at the inlet) to generate an optimum flow field from the greatest flow amplification.
- No moving parts in the eductor, minimizing maintenance expenses.
Optimum flow field enables more activity within the tank than competitive units without changing pumps.
- Compact design and ease of mounting keeps the TLA from interfering with other tank equipment.
- "In-tank" mounting eliminates need for costly, complex mounting structures above tanks.
- The TLA can be used in a wide variety of open vessels or closed tanks.
Eliminates stratification and promotes a homogenous tank with relation to pH, temperature, solids or gas dispersion, and distribution of chemicals.
Produces a unique agitation not available with other types of mixers, as the TLA can generate a directed flow field within the fluid being mixed including viscous fluids, slurries, and suspensions.
- Easily mixes liquids of differing specific gravities and is excellent for scrubbing applications where a lower specific gravity fluid is driven into the higher one.
- Flow amplification due to high "pick-up ratio" and hydraulic efficiency permits the use of smaller pumps, which translates to reduced costs of mixing or agitation.
- Reduces investment cost because existing transfer pumps can be utilized for more than one purpose.
Edathon Coating Option
- Excellent Corrosion Resistance
Excellent Abrasion Resistance
300° F Continuous Service
Good Non-Stick Characteristics
- Excellent Dielectric Insulation
This coating is applied via electrostatic powder spray or fluidized powder bed. In addition to possessing the high chemical and temperature resistance which all fluoropolymers are noted for, Edathon's strengths, radiation resistance, wear resistance, and creep resistance are significantly greater than those of other fluoropolymers such as PTFE, FEP, or PFA.
ULTRATUF Coating Option
Fusion Bonded Coating
- Excellent Abrasion Resistance
- 300° F Continuous Service
- Electically Insulating
- Impact Resistant
- Withstands Saltwater Environment
At last, a single coating offering abrasion resistance so excellent that it can withstand the punishment of sand blasting and yet be used on medical instruments subjected to repeated sterilization. This unique coating can be applied from 5-35 mils thick and has found many areas of use.
Standard materials TLA's are cast or fabricated in: bronze, 316 stainless and carbon steel. Cast units range from IPS 3/4 to 2. Larger sizes and other materials are fabricated. Consult the factory for details.
Standard body connection for 3/8 and 3/4 units is male NPT and for 1-1/2 through 3, female NPT. Over 4" is flanged. Optional connections include female/male NPT, butt weld, socket weld, VictualicTm, sil-braze, and flanged.
* Carbon Steel
Custom Tank Eductor Manifold Designs
We can design manifolds customized to your unique application(s). Drawing from our years of experience will help take the guess work out of your layout design(s).
Calculating Turnover Rates
When turnover rates are used to calculate mixing it is important to consider the viscosity of the fluid and the amounts of solids present. It also important to consider the size, weight and shape of the tanks which may limit the free flow of the mixing solids to maintain suspension. The viscosity or odd flow field within the tank, and suspensions that separate easily may demand constant mixing. In most cases, the TLA will usually provide a homogenous mixture of the vessel in one to three turnovers.
When operated with pressure drops between 10 and 60 PSI, the TLA will entrain at least 4 times as much tank liquid as the motive liquid used. For pressure drops over 60 PSI, the amount of fluid entrained by the TLA remains almost constant. Up to 5 to 1 Entrainment.
To calculate the required turnover time for the tank with pressure drops between 10 and 60 PSI, divide the tank volume by the result of the number of eductors times the outlet flow (GPM).
|Size IPS||Pressure Difference, PSI|
|Motive Flow (GPM)||7.1||10.0||12.3||14.2||15.8||17.4||18.7||20.1||21.3||22.4||24.6||26.5|
|3/8" mnpt||Outlet Flow (GPM)||35||50||61||71||79||87||88||90||91||92||94||96|
|Max. Plume Length||4||8||12||16||22||29||36||43||50||58||72||86|
|3/4" mnpt||Motive Flow (GPM)||15.4||21.8||26.7||30.8||34.5||37.8||40.8||43.6||46.3||48.8||53.4||57.7|
|Outlet Flow (GPM)||77||109||134||154||172||189||192||195||197||200||204||209|
|Max. Plume Length (FT)||5||11||17||24||33||42||53||64||74||85||106||127|
|Motive Flow (GPM)||30.8||43.6||53.4||61.6||68.9||75.5||81.5||87.2||92.5||97.5||107||115|
|1-1/2" fnpt||Outlet Flow (GPM)||154||218||267||306||345||378||384||389||395||400||409||417|
|Max. Plume Length (FT)||7.5||16||24||34||46||60||75||90||105||120||150||180|
|2" fnpt||Motive Flow (GPM)||61.6||87.2||107||123||138||151||163||174||185||195||214||231|
|Outlet Flow (GPM)||308||436||534||616||689||755||767||778||789||799||818||835|
|Max. Plume Length (FT)||11||23||34||48||65||85||106||127||148||170||212||255|
|Motive Flow (GPM)||142||201||246||283||317||347||375||401||426||449||491||531|
|3" fnpt||Outlet Flow (GPM)||708||1,003||1,228||1,417||1,585||1,737||1,764||1,790||1,815||1,836||1,880||1,920|
|Max. Plume Length (FT)||16||34||51||73||99||129||161||193||225||257||322||386|
|4" flg||Motive Flow (GPM)||246||349||427||493||551||604||652||698||740||780||856||920|
|Outlet Flow (GPM)||1232||1744||2136||2448||2760||3024||3072||3112||3160||3200||3272||3336|
|Max. Plume Length (FT)||22||41||60||95||132||164||196||228||260||295||360||424|
|6" flg||Motive Flow (GPM)||493||698||854||986||1102||1208||1304||1395||1480||1560||1712||1840|
|Outlet Flow (GPM)||2464||3488||4272||4896||5520||6048||6144||6224||6320||6400||6544||6672|
|8" flg||Motive Flow (GPM)||986||1395||1709||1971||2205||2416||2608||2790||2960||3120||3424||3680|
|Outlet Flow (GPM) (FT)||4928||6976||8544||9792||11040||12096||12384||12448||12640||12800||13088||13344|
|10" flg||Motive Flow (GPM)||1971||2790||3418||3942||4410||4832||5216||5581||5920||6240||6848||7360|
|Outlet Flow (GPM)||9856||13952||17088||19584||22080||24192||24576||24896||25344||25600||26176||26688|
|Size||Max Free Passage||Dimension A||Dimension B||Dimension C||Dimension D|
|8"||consult||Contact Us for 8" and Over|
Jet Pump Selection
While our competition design their eductors for nominal pressure ratings, JRG/JT Eductors are designed and produced to meet rigorous ASME/ANSI specifications.
Our eductors and jet pumps offer ratings about 30% higher than most competitors.
JRG/JT Eductors are rated at 316SS: 720 psig @ 100 F | Carbon Steel: 740 psig @ 100 F | Bronze: 500 psig @ 100 F