Energy efficient 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 is oil-free, using only water for lubrication. Most pumps can be delivered with ATEX and API 674 approvals.
The Danfoss APP pumps are available in various sizes from 0.6 m3/h to 92 m3/h for use in small and medium-sized SWRO facilities.
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
Make fresh water in a sustainable and energy-efficient way
Reduce energy costs by applying the Danfoss APP pump
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.
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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Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. outlet pressure, inlet: 2-5 barg/72.5 psig
Flow range: 24-92 m3/h – 106-405 gpm
Speed: 700 to 1,780 rpm -
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Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. outlet 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 -
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Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. outlet 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 -
if (isSmallPicture) {
Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. outlet pressure, inlet: 0.5-5 barg/7.3-72.5 psig
Flow range: 9.2-13.8 m3/h - 40.5-60.8 gpm
Speed: 700 to 1,500 rpm -
if (isSmallPicture) {
Pressure range: Max outlet pressure: 80 barg/1,160 psig
Min. outlet pressure, inlet: 0.5-5 barg/7.3-72.5 psig
Flow range: 0.2-1.3 m3/h - 0.9-5.7 gpm
Speed: 700 to 3,450 rpm
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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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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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The 3-in-1 Energy Recovery Device (ERD) optimized for sea water reverse osmosis applications.
Related solutions
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The global water challenges call for innovative solutions. Desalination is fast becoming a leading technology to transform sea water into clean fresh water for multiple purposes.
How it works
Case studies
Reverse osmosis case studies
Learn more where to use our APP pumps and iSave ERDs in reverse osmosis applications
Videos
Pump animation
Learn how an axial piston pump works in this video animation