High-pressure pumps for reverse osmosis applications

  • Overview
  • Product range
  • Related products

Energy efficient pumps for desalination

With Danfoss high-pressure APP 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.

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 knowledge

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

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. ​

Product range

  • Product photo of the APP 0.6-1.0 range high pressure pump by Danfoss
    APP 0.6-1.0 high pressure pump
    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
  • Product photo of the APP 1.5-3.5 range of high pressure pumps by Danfoss
    APP 1.5-3.5 high pressure pump
    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
  • Product photo of the APP 5.1-10.2 high pressure pump by Danfoss
    APP 5.1-10.2 high pressure pump
    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: 1.9-10.7 m3/h - 8.4-47.1 gpm Speed: 700 to 1,800 rpm
  • Product photo of the APP 11-13 high pressure pump by Danfoss
    APP 11-13 high pressure pump
    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
  • Product photo of the APP 16-22 high pressure pump by Danfoss
    APP 16-22 high pressure pump
    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

Related products

  • Product photo of the iSave energy recovery device by Danfoss
    Energy recovery devices for reverse osmosis applications
    The 3-in-1 Energy Recovery Device (ERD) optimized for sea water reverse osmosis applications.