APP 53-92 pumps
The Danfoss range of APP high-pressure pumps is designed according to EN 809 for use in RO applications with low viscosity and corrosive fluids such as sea water.Danfoss APP pumps are positive displacement pumps with axial pistons that move a fixed amount of water in each cycle. Flow is proportional to the number of input shaft revolutions (rpm). Unlike centrifugal pumps, they produce the same flow at a given speed no matter what the discharge pressure. The sectional drawing below illustrates the main components of the APP 53-92 pump range.
Features and benefits
- Zero risk of lubricant contamination: Oil lubricants are replaced with the pumped medium, water, so there is no contamination risk from the pump
- Low maintenance costs: Efficient design and all-stainless steel construction ensure exceptionally long life. When Danfoss specifications are met, service intervals of 8,000 hours can be expected. Service is easy, and can be carried out on-site due to the simple design and few parts
- Low energy costs:The highly efficient axial piston designprovides the lowest energy consumption of any comparable pump on the market
- Easy installation: The most compact and lightest design available. The pump can be installed horizontally in different positions rotating it around the shaft (see section 10 for example)
- High reliability: All parts are made of high corrosion resistant materials e.g. Duplex (EN1.4462/ UNS S31803) and Super Duplex (EN1.4410/UNS S32750) stainless steel and carbon reinforced PEEK.
- Certified quality: Available with positive material idenfication (PMI) certification on request.
- ISO 9001, ISO 14001, IAFT 16949
- ATEX certification available for APP S (all Super Duplex) and APP S 674 (API).
Please see relevant data sheets.