Danfoss APP 2.2 High Pressure Pump 180B3045

Danfoss APP 2.2 Axial Piston High-Pressure Pump (MPN: 180B3045)

The Danfoss APP 2.2 (Part Number: 180B3045) is an axial piston positive displacement pump engineered specifically for sea and brackish water reverse osmosis (SWRO / BWRO) systems, technical marine water makers, and offshore process skids. Utilizing an axial swashplate mechanism with fluid-lubricated internal components, the pump operates entirely without lubricating oils, eliminating cross-contamination risks across reverse osmosis membrane arrays.

Manufactured from high-grade Duplex stainless steel (EN 1.4462 / UNS S31803) with NBR elastomers, the APP 2.2 withstands aggressive high-chloride seawater corrosion under continuous operating pressures up to 83 barg (1,204 psig). It delivers an isobaric volumetric efficiency exceeding 95%, reducing the kilowatt-hour per cubic meter energy footprint in marine and land-based desalination plants.

Model Details

• Manufacturer: Danfoss
• Series: APP Series (Axial Piston Pump)
• Model Designation: APP 2.2 with Flushing Valve
• Danfoss Ordering Code / MPN: 180B3045
• Standard EAN/UPC: 5715162667668

Technical Details

Compatibility

• Electric Motors: Compatible with standard IEC (IEC 90L/100L frame) and NEMA (56C / 143TC / 145TC) electric motor drive units using standard bell housings and flexible jaw couplings (e.g., Bowex or Rotex).
• VFD Control: Full duty cycle capability across 700–3,450 rpm on variable frequency drives (constant torque profile recommended).
• OEM Skid Integration: Directly compatible with marine watermakers and commercial SWRO skids from manufacturers such as Parker Hannifin Sea Recovery, Horizon Reverse Osmosis (HRO), Village Marine, Cathelco, Schenker, Osmosea, and custom containerized SWRO packages.

Part Number Cross-References

• Danfoss Ordering Code: 180B3045
• Series Reference: Danfoss APP 2.2 / APP 1.5–3.5 Product Group
• Alternate / Superseded Codes: Compatible replacement for legacy Danfoss APP 2.2 iterations (180B3002, 180B3004 configuration dependent)
• Direct Sister Models:
  • 180B3044 (APP 1.8)
  • 180B3046 (APP 2.5)
  • 180B3047 (APP 3.0)

Frequently Asked Questions

What is the exact displacement and max flow rate of the Danfoss APP 2.2 (180B3045)?

The pump features a fixed displacement of 12.52 cm³/rev (0.76 in³/rev). At its minimum operating speed of 700 rpm, it delivers 7.4 l/min (1.9 gpm), scaling up to a maximum delivery of 41.9 l/min (10.9 gpm or 2.5 m³/h) at 3,450 rpm.

What media can the Danfoss 180B3045 pump safely handle?

The pump is engineered specifically for seawater and brackish water reverse osmosis systems. Because wetted components are machined from Duplex stainless steel (EN 1.4462) with NBR seals, it handles standard seawater salinities up to 45,000 ppm TDS within a media temperature envelope of +2°C to +50°C.

Does the Danfoss APP 2.2 require crankcase oil changes?

No. The pump uses no lubricating oil. All internal rotating and sliding interfaces—including the swashplate, piston slippers, and cylinder barrel—are hydrodynamically lubricated and cooled entirely by the pressurized process water.

Can the APP 2.2 pump be run with a Variable Frequency Drive (VFD)?

Yes. The APP 2.2 operates efficiently on a VFD within its approved speed envelope of 700 to 3,450 rpm. Operation below 700 rpm must be avoided, as lower shaft speeds may fail to generate sufficient hydrodynamic fluid film thickness inside the internal bearings.