RTM Tank Eductors · Eductors & Jet Pumps
Tank Mixing Eductor
Model TLM-521
Investment cast tank mixing eductors that provide powerful, uniform agitation using the Venturi principle — no mechanical mixers, no moving parts, no maintenance.
No Moving Parts
Zero mechanical components means minimal maintenance, no shaft seals, no impellers, and no lubrication requirements.
4–5× Flow Amplification
When operated at 10–60 PSI pressure drop, the TLM-521 entrains at least 4–5× as much tank liquid as the motive fluid used.
Compact In-Tank Mounting
Submerged mounting eliminates costly overhead support structures and does not interfere with other tank equipment.
Open or Closed Tanks
Suitable for a wide variety of open vessels and enclosed tanks across food, chemical, refining, and general process industries.
How Tank Mixing Eductors Work
A predetermined amount of liquid — called the operating fluid — is pumped through a header pipe to one or more TLM-521 eductors submerged inside the tank. As the operating fluid leaves the nozzle, it creates a high-velocity jet that dramatically reduces local pressure (the Venturi effect).
This low-pressure zone draws in surrounding tank liquid at 4–5× the motive flow rate — no pump, no impeller, just fluid physics. The motive fluid and entrained liquid mix thoroughly in the parallel section before discharging as a powerful plume that circulates the entire tank.
In most cases, the TLM-521 will produce a homogeneous mixture of the vessel contents in one to three turnovers. To calculate required turnover time, divide tank volume by the result of (number of eductors × outlet flow in GPM).
RTM TLM521 Series — Multiple Sizes & Connections
Applications
The TLM-521 handles a wide range of viscosities and liquid types — including slurries and suspensions — making it especially useful for maintaining uniform liquid characteristics throughout tank contents.
- Blending and pH uniformity
- Temperature equalization
- Solids suspension and distribution
- Stratification prevention
- Gas dispersion
- Non-miscible liquid mixing
- Slurries and suspensions
- Viscous liquid agitation
Materials & Connections
Available in materials to suit food, chemical, refining, and general process industries. Standard body connections: 3/8″ and 3/4″ — male NPT; 1-1/2″ through 3″ — female NPT; 4″ and above — flanged.
⅜″ – 3″ in Carbon Steel & 316 Stainless Steel
3″ 316SS also stocked with 150# ANSI flanged connections. No lead time on stocked configurations.
Custom Manifold Designs Available
We design manifolds customized to your unique application — eliminating dead zones and ensuring complete circulation in large or complex tanks.
Dimensional Data — Model TLM-521
| Size | Length (in) | Length (mm) | Width (in) | Width (mm) | Connection | Nozzle (mm) |
|---|---|---|---|---|---|---|
| 3/8" | — | — | — | — | 3/8 MNPT | — |
| 3/4" | 7.25 | 184 | 3.69 | 94 | 3/4 MNPT | 20 |
| 1-1/2" | 10.88 | 276 | 5.50 | 140 | 1-1/2 FNPT | 28 |
| 2" | 14.50 | 368 | 7.69 | 195 | 2 FNPT | 41 |
| 3" | 22.00 | 559 | 11.75 | 298 | 3 FNPT | 63 |
| 4" | 25.00 | 635 | 12.00 | 305 | 4 FLGD | 76 |
| 6" | 35.00 | 889 | 25.00 | 635 | 6 FLGD | 114 |
| 8"+ | — | — | — | — | Contact factory for 8" and over | — |
Contact factory for 8″ and larger sizes. Custom manifold configurations available.
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