Dong Yang 20
New pump series offering excellent value for money for pond aeration. The Dong Yang air pump series is highly efficient, energy-saving, quiet and safe to use.
Features of the Dong Yang series:
• Special rubber compound in the membrane ensures a consistent air flow rate and constant air
pressure• Advanced air compression and damping system with multi-stage, extremely low-noise
damper• Functional, compact design•
Long service
life• Delivers the best results with the lowest
energy consumption• Aluminium alloy housing enables rapid heat dissipation and low weight
- Description
- Important information
- User manual
- Technical specifications
- Dimensions
- Installation
- Product video
- FAQs
Features of the Dong Yang series:
• Special rubber compound in the diaphragm ensures a consistent air flow rate and constant air
pressure• Advanced air compression and damping
system• Functional, compact design•
Long service
life• Delivers the best results with the lowest
energy consumption• Aluminium alloy housing enables rapid heat dissipation and low weight
The double air chamber structure produces large volumes of air at high air pressure. It can be operated continuously and without interruption.
The air pump comes with a 90° adapter hose with 2 hose holder seals. The Dong Yang delivers consistently good performance and air flow even at great depths.
Monday to Friday: 9 a.m. to 5 p.m.
- Air pumps must always be protected from the weather
- It is also important that they are not exposed to excessively high (+40°C) or low (below 5°C) temperatures, as well as humidity (filter shaft/chamber). This leads to rapid wear and tear and even defects.
- They should also not be too far away (we recommend max. 2 to 4 metres) from the pond
- Please note that these take in air from the surrounding area and direct it into the pond
In winter, this could mean that you cool down your pond without meaning to.
- They should also be positioned above the waterline if possible; if this is not the case, please use non-return valves. If water enters the pump, this is not covered by the warranty.
- The designation normally indicates the litres of air per minute that the pump expels. In this regard, sufficient and/or suitable air diffusers must also be used .
- We recommend 9 mm or 16 mm air hose to ensure that the pump works efficiently
(from 80 litres/minute, a 16 mm air hose can already be used).
| Model | Consumption (W) |
Max. output (l/min) |
Dimensions LxWxH (mm) |
Weight |
| DY 20 |
20 | 20 | 190x150x160 | 2 |
| DY 40 | 37 | 40 | 250x185x190 | 4.3 |
| DY 60 | 56 | 60 | 250x185x190 | 4.5 |
| DY 120 | 100 | 120 | 300x230x230 | 8.25 |
| DY 160 | 145 | 160 | 300x230x230 | 8.5 |
| Model | Dimensions LxWxH (mm) |
Weight |
| DY 20 |
190 x 150 x 160 | 2 |
A Dong Yang 20 generates 20 litres of air per minute. In this case, diffusers should be selected that also allow 20 litres of air per minute to flow out.
Air that does not flow out has a wearing effect on the membranes.
Wear occurs, for example
- if the wrong diffusers are selected,
- if the diffusers are not cleaned and become clogged over time,
- air regulation by means of an air valve,
- air hoses that are too small,
- dirty air filters,
- normal wear and tear, etc.
With this air pump, the aerators can be suspended at a water depth of 2 metres.
We recommend the following diffusers:
- 2 x Angel Aqua diffusers 22 x 4 cm (9 mm air hose) – approx. 10–13 l/min output per diffuser
- 2 x aeration rod - 30 cm connection 16 mm (16 mm air hose) - approx. 15 l/min output per diffuser
Free shipping on orders over €100
KOI Company Quality Promise
Expert advice from a specialist
Up-sells
spare parts
