Highly energy efficient and reliable axial piston pumps for desalination
With Danfoss high-pressure axial piston pumps tailored to Sea Water Reverse osmosis (SWRO) applications you will get one of the most reliable and sustainable pumps for desalination. The APP pumps can be used in almost any SWRO application – land-based, offshore or marine. Mounted in containers or trains, the APP pumps can contain several pumps in parallel to secure uninterrupted and sufficient supply at any time.
- APP 30 with motor: View the 3D model
- APP 30 without motor: View the 3D model
- App 78 pump: View the 3D model
Danfoss has pioneered axial piston pump technology in challenging hydraulic applications for several years. With more than 15 patents, a strong precision engineering heritage and world-class production know-how in Duplex, Super Duplex and carbon-reinforced PEEK, Danfoss designs and produces the most advanced high-pressure pumps available for reverse osmosis. The APP pump for RO systems, now also available with ceramics, is oil-free, using only water for lubrication. Most pumps for RO systems can be delivered with ATEX and API 674 approvals.
Danfoss APP pumps for reverse osmosis systems are available from 0.6 m3/h to 92 m3/h. All APP pumps are available with and without motors. Monitoring system available for all APP pumps from 21 m3/h and higher.
Features and benefits
Extensive application know-how
Highest efficiency rates in the industry
Compact and small – half size of competing pumps
Long time between service intervals
Easy and service-friendly design
Simple and reliable with high uptime
Short pay-back time
Calculate the number and sizes of high-pressure pumps required for your application and discover how much energy you can save.
Customer collaboration contributes to pump innovation
Follow our blog
Danfoss is dedicated to engineering energy efficient solutions. Our blog explores issues related to energy and cost efficiency in seawater reverse osmosis.
How it works
Compact and simple design
Due to its high energy-efficiency and reliability, SWRO has turned into one of the most sustainable and cost effective desalination solutions for land-based, offshore and marine applications. The technology is reliable and safe with high-pressure pumps forcing seawater through desalination membranes to create fresh water. Danfoss supplies expertise and unique technologies that can offer your business high efficiency, low maintenance and flexible configuration.
The importance of energy efficiency in the desalination process
Juan Manuel Ortega, renowned desalination expert, tells about the importance of using highly efficient energy recovery devices and high-pressure pumps.
Superior energy recovery in SWRO
Danfoss iSave is a patented, high-efficiency Energy Recovery Device (ERD) that guarantees constant membrane feed in SWRO applications of any size – on land, at sea or on the move.
Product range
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APP D 30-38 high-pressure pump with ceramic
Pressure range: Max outlet pressure: 83 barg/1,200 psig
Min. inlet pressure: 2-5 barg/29-72.5 psig
Flow range: 18-38 m3/h – 79.7-167.3 gpm
Speed: 700-1,500 rpm
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Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. inlet pressure, inlet: 2-5 barg/29-72.5 psig
Flow range: 13.3-21.9 m3/h - 58.6-96.4 gpm
Speed: 700 to 1,500 rpm -
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Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. inlet pressure, inlet: 0.5-5 barg/7.3-72.5 psig
Flow range: 1.9-10.7 m3/h - 8.4-47.1 gpm
Speed: 700 to 1,800 rpm -
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Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. inlet pressure, inlet: 2-5 barg/29-72.5 psig
Flow range: 9.2-13.8 m3/h - 40.5-60.8 gpm
Speed: 700 to 1,500 rpm -
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Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. inlet pressure, inlet: 0.5-5 barg/7.3-72.5 psig
Flow range: 0.4-3.5 m3/h - 1.8-15.4 gpm
Speed: 700 to 3,450 rpm
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Data sheet | APP 0.6-46 pumps data sheet | English | Multiple | 26 Aug, 2024 | 3.8 MB | |
| Data sheet | APP 0.6-46 pumps data sheet | French | Multiple | 25 Nov, 2021 | 2.7 MB | |
| Data sheet | APP 0.6-46 pumps data sheet | German | Multiple | 25 Nov, 2021 | 2.8 MB | |
| Data sheet | APP 0.6-46 pumps data sheet | Spanish, Castilian | Multiple | 25 Nov, 2021 | 2.7 MB | |
| Promotion material | APP high-pressure pumps with ceramics: Robust energy efficiency for demanding membrane technologies | English | Multiple | 12 Jan, 2024 | 1.4 MB | |
| Article | APP pump now with ceramics for energy efficient SWRO and wastewater treatment | English | Multiple | 05 Dec, 2023 | 1.1 MB | |
| Data sheet | Data sheet APP 53-92 pumps | German | Multiple | 03 Dec, 2021 | 3.6 MB | |
| Data sheet | Data sheet APP 53-92 pumps | English | Multiple | 12 Apr, 2023 | 4.2 MB | |
| Data sheet | Data sheet APP 53-92 pumps | Spanish, Castilian | Multiple | 03 Dec, 2021 | 3.5 MB | |
| Data sheet | Data sheet APP 53-92 pumps | French | Multiple | 03 Dec, 2021 | 3.6 MB | |
| Brochure | Making fresh water possible in a sustainable and energy-efficient way | English | Multiple | 16 Jul, 2021 | 628.6 KB | |
| Brochure | Making fresh water possible in a sustainable and energy-efficient way | English | United States | 05 Mar, 2019 | 661.3 KB | |
| Brochure | Making fresh water possible in a sustainable and energy-efficient way | Spanish, Castilian | Multiple | 04 Mar, 2019 | 669.1 KB |
Related products
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For use in corrosive environments and with aggressive media, Danfoss offers the robust DST P40I pressure transmitter made of Titanium and with ceramic pressure sensing element. DST P40I is optimized for use in applications such as desalination systems, seawater cooling, and chemical processing.
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VLT® AQUA Drive FC 202 controls all types of pumps and comes equipped with a cascade controller.
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With a 3-in-1 design that integrates highly effective isobaric pressure exchangers with positive displacement booster pumps and electrical motors, iSave® ERDs deliver big energy savings in small spaces. Covering train sizes from 200-3,000 m3/day
Related solutions
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Decarbonizing of water treatment comes down to energy efficiency
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Due to high energy efficiency and reliability, Sea Water Reverse Osmosis (SWRO) is one of the most sustainable and cost effective solutions for converting sea water to potable fresh water. Danfoss is committed to supporting the desalination industry with energy efficient SWRO solutions.
Learning
Pump animation
Learn how an axial piston pump works in this video animation
Case stories
Reverse osmosis case studies
Learn more where to use our APP pumps and iSave ERDs in reverse osmosis applications
Articles
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Aquaculture is growing worldwide, and we now eat more farmed salmon than wild-caught.
Read our latest blog to learn how SWRO plays an innovative and important role in keeping salmon raised in marine aquaculture free from parasites through freshwater treatment on specially built wellboats.
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The scarcity of fresh water resources and the need for additional water supplies is critical in many regions of the world and will be increasingly important in the future. The UN has made availability of water and sanitation for all, one of the Global Development Goals.
