Irrigation
Dewo DC-S2-3 Impact Sprinkler
The Dewo DC-S2-3 is an agricultural impact sprinkler offered with six nozzle sizes, from 2.5 to 4.0 mm. Dewo publishes flow and spray radius for each nozzle at set pressures, from 360 L/h at a 9.5 m radius up to 1030 L/h at 13.0 m. Pick a nozzle and pressure pair from the table, then ask Dewo for the inlet thread, the test setup behind the figures and a layout for your field. This page gives the full table, how to read it for a zone, and what to send with an order.
Ningbo Dewo Irrigation Equipment Co., Ltd. ↗
Build my procurement briefDC-S2-3 nozzle table: pressure, flow and radius
Dewo lists three pressure points for each nozzle. Each row below keeps those three points together. Radius is the stated spray reach of one sprinkler.
| Nozzle | Pressure: flow and radius |
|---|---|
| 2.5 mm | 2 bar: 360 L/h, 10.5 m; 3 bar: 450 L/h, 10.8 m; 4 bar: 510 L/h, 11.3 m |
| 2.8 mm | 2 bar: 450 L/h, 11.0 m; 3 bar: 550 L/h, 11.5 m; 4 bar: 630 L/h, 12.0 m |
| 3.0 mm | 1 bar: 360 L/h, 9.5 m; 2 bar: 510 L/h, 11.5 m; 3 bar: 630 L/h, 12.0 m |
| 3.2 mm | 1 bar: 410 L/h, 10.0 m; 2 bar: 570 L/h, 11.5 m; 3 bar: 700 L/h, 12.0 m |
| 3.5 mm | 1 bar: 490 L/h, 10.0 m; 2 bar: 660 L/h, 11.5 m; 3 bar: 810 L/h, 12.0 m |
| 4.0 mm | 1 bar: 600 L/h, 10.5 m; 2 bar: 850 L/h, 12.0 m; 3 bar: 1030 L/h, 13.0 m |
Sources [1]
Published specifications
Read each value with its stated conditions, and ask the manufacturer for any limit not listed here.
| Specification | Published value | Meaning / limit |
|---|---|---|
| Nozzle sizes | 2.5, 2.8, 3.0, 3.2, 3.5 and 4.0 mm [1] | Each size has its own group in the table. Ask how the supplied nozzle is marked so replacements match. |
| Pressure points, small nozzles | 2.5 / 2.8 mm: 2, 3 and 4 bar [1] | These two nozzles have no 1-bar entry. |
| Pressure points, other nozzles | 3.0 / 3.2 / 3.5 / 4.0 mm: 1, 2 and 3 bar [1] | These four nozzles stop at 3 bar in the table. |
| Example duty point | 3.0 mm at 2 bar: 510 L/h, 11.5 m radius [1] | One listed pairing. Spacing and installed flow come from your zone layout. |
| Inlet and test setup | Thread and test installation not given on the model page [1] | Ask for the connection drawing and where pressure was measured, plus mounting height, wind and rotation during the test. |
Same reach, different watering rate
At 2 bar, the 3.0, 3.2 and 3.5 mm nozzles all reach 11.5 m, but they deliver 510, 570 and 660 L/h. Equal radius gives three different application rates.
Ask Dewo for the distribution pattern and test conditions: mounting height, wind and rotation setup. Set spacing and run time for your crop, soil and layout. A catch-can test on a representative layout will show how evenly water lands. Dewo publishes no uniformity coefficient, water saving or yield figure for this sprinkler.
Sources [1]
Size the zone by pressure at the sprinkler head
The table does not say where pressure was measured. Ask Dewo before you compare it with your system. Pump outlet, valve, pipe and riser all see different pressures once several sprinklers run at once. Our guide to specifying irrigation hose and pipe explains friction loss and working pressure, which decide how much of the supply pressure reaches each head.
Send Dewo the zone shape, elevation, water supply and how many sprinklers will run together. Ask for a hydraulic proposal that names the nozzle and shows the pressure available at each head. Each nozzle has its own pressure span in the table, and maximum radius alone will not give you an area rate. Where a petrol pump feeds the zone, our water pump sizing guide shows how to read total head off a pump curve before matching it to a nozzle.
Sources [1]
Riser, water quality and spare parts
Dewo describes the sprinkler as resistant to corrosion and weather but names no material grade or service life. The model page also gives no filter rating or inlet drawing. Ask for these with your quote.
| Topic | What to request |
|---|---|
| Connection and mounting | Inlet thread standard, connection drawing, allowed mounting and where pressure is defined. |
| Water quality | Your source-water details in return for a filtration recommendation and maintenance instructions for the chosen nozzle. |
| Nozzle and mechanism | Replacement part numbers, current material specification and matching service parts. |
| Supplied set | Whether the price covers the sprinkler and nozzle only or also riser and fittings, the quantity, and any adjustment accessories. |
Prepare a model-specific brief
Write your actual conditions below. This local worksheet is not sent, uploaded or saved after reload. Copy or print it before leaving.
From table point to working zone
For a multi-sprinkler layout, agree the installed duty and the distribution target before you accept the work. More sprinklers and watering equipment are listed in our irrigation section. If you are weighing larger heads, the Runte RT-9816 and RT-9821 Rain Guns are another maker's option to set against the DC-S2-3 table.
Pick the pairing
Write down the nozzle, the pressure needed at the sprinkler and its flow and radius from the table.
Define the installation
Connections, riser and layout, supply, pipe losses and how many heads run at once.
Test the spread
Run a representative distribution check with wind, height and rotation recorded, and agree who carries it out.
Keep service records
Supplied parts, water and filtration needs, spare nozzles and the written warranty.
Buyer questions
Can every DC-S2-3 nozzle run from 1 to 4 bar?
The table gives 2 to 4 bar for the 2.5 and 2.8 mm nozzles and 1 to 3 bar for the other four. Ask Dewo in writing before running a nozzle outside its listed points. [1]
Should sprinklers be spaced 11.5 m apart for an 11.5 m radius?
Spacing depends on overlap and how evenly water falls. Ask Dewo for a layout and a distribution test for your installation. [1]
What inlet thread does the DC-S2-3 have?
The model page does not state it. Request the connection drawing with your quotation. [1]
Sources
Specifications come from the manufacturer's publications listed below, with the date each was checked.
- Dewo official DC-S2-3 page and nozzle table
manufacturer · Checked 2026-10-11
Flow and radius for six nozzles at each listed pressure. Test conditions are not stated.
- Dewo official company introduction
manufacturer · Checked 2026-10-11
Dewo's product range, production scope and 15000-square-metre site.
- Dewo official quality and production page
manufacturer · Checked 2026-10-11
Moulding, assembly and testing in Dewo's own workshop.
- Dewo official contact identity
manufacturer · Checked 2026-10-11
Company location in Yuyao.
Report a correction through our contact form, quoting DC-S2-3 and the relevant specification.