Laing DDC pumps were specially designed to be used in a computer water cooling systems that is why this series have typical features:
- High efficient spherical motor design, ultra quiet, ultra efficient, with an expected service life of well over 50,000 hours at 12 Volt.
- Highly efficient and dynamically balanced impeller with carbon bearing for smooth ultra quiet operation.
- High density ceramic bearing ball and graphite impeller bearing cap designed for high efficiency and long life.
- Embedded microprocessor control is self regulating and available with variable speed with PWM input or dial control (potentiometer) on the pump.
- Unique patented design has no mechanical seal which is a potential leak path.
- Unique, low profile space saving design provides easy installation.
- Pump is designed to be mounted horizontally with discharge.
In Europe these pumps are known under DDC1 and DDC1+ names, while the American market names the same products as DDC 3.2 и DDC 3.2. Since 2009 DDC 3.15 and DDC 3.25 named pumps are appearing in American market. Detailed overview can be found at the end of this article.
Performance graph of Laing DDC pumps
Notwithstanding of its compact size, these pump series have wonderful performance.
Laing DDC pump arrangement
The arrangement of all Laing pumps is the same; differences can be found in motor hookup or impeller in some cases.
Label Decryption of Laing DDC pumps
Detailed measurements of Laing DDC pump series
Installation position
Laing DDC pump specification spreadsheet
| Laing DDC 1 (DDC 3.1) | Laing DDC 1Plus (DDC 3.2) | Laing DDC 3.15 | Laing DDC 3.25 | |
|---|---|---|---|---|
| Documents: | Datasheet | Datasheet | ||
| Manual | Manual | |||
| Performance, l/h: | 420 | 500 | 300 | 522 |
| Max Head, Hmax, m: | 3.7 | 4.7 | 4.2 | 4.9 |
| Noise level, dBa: | 24 ~ 26 | 30 ~ 32 | 24 ~ 26 | ~ 31 |
| Pipe Connections | ||||
| Inlet: | hose barb 3/8″ (9.5mm) or G1/4 thread | |||
| Outlet: | hose barb 3/8″ (9.5mm) or G1/4 thread | |||
| Rated voltage: | 8-13,2 Volt DC (minimum startup Voltage 9 V) | |||
| Power consumption, watts: | 10 | 18 | 13 | 18 |
| Maximum Working Pressure: | 150 kPa (1,5 bar) / 21.75 PSI | |||
| Max. Temperature: | 60° C / 140° F | |||
| Dimensions (in brackets with 1/4″ R male connection). h x l x w, mm : | 38(40) x 62(62) x 62(62) | |||
| Materials of Construction: | Pump Housing – Nylon/PPO “O” Ring – EPDM or Viton Impeller – Nylon/PPO Bearing – Carbon/Allumina Ceramic All Other Wetted Parts – 316 Stainless Steel or Plastic |
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| Wetted Parts: | Stainless steel 1.4571, PPS-GF40, EPDM gasket, Aluminium oxide, carbon; PA6.6 GF35 | |||
| Acceptable media: | Water, Water-/Glycolc Mixtures, other medias on request (check pump performance for mixtures of 20% or more glycole) | |||
| Other: | Automatic Overload Protection. The tach signal is an open collector type max 20mA, max 24v, 2 pulses per revolution. |
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| Notes: | ||||
| Value: | 50,41 € | 65.54 € | ||
Laing DDC 3.25
- XS forum member Hondacity made a comparative test of Laing DDC 3.2 and Laing DDC 3.25. In actual loop performance behavior of these two pumps is the same.
- DDC 3.25 and DDC 3.1 / DDC 3.2 impellers have only color difference
Laing DDC 3.1 / DDC 3.2 impellers (entirely blue) and Laing DDC 3.25 (red on the inner side)
- The PCB is the one that Laing 3.1 has, although electronic components in DDC 3.25 differ from DDC 3.1 / DDC 3.2
Impeller
All Laing DDC 3-series have the same impeller.
(+2 rating, 2 votes)
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