The model number is a useful first filter when selecting a TW misting nozzle, but it is not a complete system specification. The TW family discussed in this guide includes TW1010, TW1510, TW2010, TW3010, TW4010, TW5010, TW6010, TW7010, and TW8010. Within this specific product series, a larger model number generally corresponds to greater flow and a larger amount of spray.
That relationship helps buyers move toward a lower- or higher-output option. It does not mean that TW8010 is automatically the best choice, and it does not provide a verified flow value by itself. The pump, pipe network, simultaneous nozzle count, and application must all support the selected model.
What the TW model sequence can tell you
The sequence provides a relative selection direction:
| TW model | Confirmed orifice | Relative position | Practical selection direction |
|---|---|---|---|
| TW1010 | 0.10 mm | Lowest listed number | Start here when evaluating lower spray demand |
| TW1510 | 0.15 mm | Between TW1010 and TW2010 | Slightly higher-output direction within the family |
| TW2010 | 0.20 mm | Lower-middle | Evaluate for moderate spray demand |
| TW3010 | 0.30 mm | Middle | Common comparison point for system selection |
| TW4010 | 0.40 mm | Middle | Higher-output direction than TW3010 |
| TW5010 | 0.50 mm | Upper-middle | Check increased total pump-flow demand |
| TW6010 | 0.60 mm | Higher | Review main-line sizing and simultaneous count |
| TW7010 | 0.70 mm | Higher | Use only after confirming system capacity |
| TW8010 | 0.80 mm | Highest listed number | Highest-output direction among the listed models |
The model-to-orifice mapping is confirmed in current supplier product data. However, no verified per-model flow, droplet-size, or spray-range table is currently published, so those values must not be inferred from orifice diameter. Actual output must be obtained from an approved data sheet or measured under clearly recorded test conditions. Water pressure, individual nozzle variation, filtration, pipe loss, and the test method can affect the result.
Choose the application before the number
Two-piece and three-piece hydraulic fine-mist nozzles in the TW range are commonly considered for greenhouse spraying, cooling, indoor use, and livestock cooling. The two-piece version has no integral strainer; the three-piece version has an integral strainer (filter screen) that helps intercept particles. It is not clog-free: retain upstream filtration and manage dissolved minerals or scale separately.
Before comparing TW3010 with TW4010—or any other pair—define what the system must achieve:
- the size of the total site;
- the area that should spray in one operation;
- the desired amount of spray per point;
- the number and spacing of active spray points;
- the pipe length from pump to the final nozzle;
- the available pump pressure and flow.
A buyer who wants more spray at each point may move toward a larger TW number. A buyer who wants many points to operate simultaneously, however, must also consider the multiplied total demand. Increasing every nozzle can overload a pump or expose an undersized main line even when one nozzle performs well during a bench test.
Treat pressure and flow as separate requirements
For the two-piece and three-piece nozzles in the applications above, approximately 24.5–34.3 bar (2.45–3.43 MPa; approximately 356–498 psi) at the nozzle inlet is a typical operating-pressure starting range for good atomization in our experience, converted from the factory field reference of 25–35 kgf/cm². It is not a universal guarantee, rated pressure, or maximum pressure. Performance depends on the selected TW model, delivered flow, piping, fittings, elevation, and the complete layout. Verify nozzle-inlet pressure with the full zone operating, and never exceed the lowest rated working pressure of any system component.
Pressure alone is not enough. A high-pressure pump that cannot supply the combined flow of all active nozzles may show acceptable pressure in a small test but lose uniformity after the full zone opens. Conversely, an ordinary water pump may provide high flow while lacking the pressure needed for the intended misting result.
The correct process is to obtain verified per-nozzle data, multiply it by the simultaneous nozzle count, allow for the actual pipe network, and confirm the system at the first and last operating points.
How pipe layout affects model selection
Available pipe outside diameters (ODs) for these systems include 32 mm, 20 mm, 16 mm, 12 mm, and 9.52 mm. Large sites that must operate in fewer cycles generally need a larger main line than small sites divided into more zones. Supplier guidance is to use these lines below 49.0 bar (4.90 MPa; approximately 711 psi), converted from 50 kgf/cm². This is not a certified universal rating; final allowable pressure depends on exact material, wall thickness, temperature, fittings, and the lowest-rated component.
A frequent layout uses 20 mm or 16 mm pipe as the main line and 9.52 mm as the branch. The 9.52 mm size is often economical for branches and matches one of the commonly used nozzle-fitting or holder sizes. For small greenhouses with limited demand, multiple 9.52 mm lines may sometimes serve the site without a larger main.
As a flat-ground field reference, a 9.52 mm-OD line is commonly planned at roughly 50–70 m, with points around 2 m apart and two nozzles per point. If the line extends beyond the practical range of the configured system, atomization at the end can become weaker than at the beginning. The figure is only a starting reference; a higher-output TW selection, slope or elevation, and other layout details can change total demand and the workable branch configuration.
A practical TW selection workflow
- Mark the required application and operating zone on a layout.
- Count all nozzles that will run at the same time.
- Decide whether the project needs lower, middle, or higher relative spray output.
- Shortlist two adjacent TW models rather than assuming one model immediately.
- Obtain verified output data for the shortlisted models under stated pressure conditions.
- Check pump flow, pump pressure, main-line size, branch length, and fittings.
- Build or test one representative branch.
- Compare the first and final nozzle before approving the full order.
Connection points to confirm
The supplier identifies 3/16 as the nozzle thread size for the two-piece and three-piece range, and the nozzle uses an installed sealing ring/O-ring. Confirm the thread standard, pitch, form, direction, male/female orientation, sealing-ring seat, and compatible nozzle fitting/holder on the current drawing before ordering. For 9.52 mm-OD pipe, a plastic-steel fitting series is available as an installation option. A nickel-plated brass transition is confirmed for a 16 mm-OD main with a 9.52 mm-OD branch. Stainless-steel options may be screw-type (top-press), slip-lock (quick-plug), or ferrule-compression; match the name and structure to the exact SKU. Other pipe-size combinations require project-specific design and exact-SKU compatibility review.
Frequently asked questions
Does a larger TW number always mean better atomization?
No. Within this series it generally means greater flow and spray amount. Atomization quality also depends on pressure, available flow, the nozzle itself, and the complete system.
How do I choose between TW3010 and TW4010?
Use the required spray amount as the first comparison, then check the combined demand of all active nozzles. Compare both models using verified data and a representative branch test.
Can I choose a TW model from pressure alone?
No. Pressure and flow must both be adequate. Pipe diameter, branch length, fittings, and simultaneous nozzle count can change the result at the final nozzle.
Are these TW models intended only for greenhouses?
No. Two-piece and three-piece versions are also used for indoor misting and livestock cooling. Suitability still needs project-specific review.
Request a system-based quotation
When requesting a quotation, provide your application, total area, operating area per cycle, intended spacing, pipe lengths, and available pump information. We can help shortlist the TW model and review the nozzle count, high-pressure pump requirement, pipe sizes, and connection method together. Final selections should be based on engineering-reviewed product data and a confirmed layout.