Danfoss APP 7.2 High-Pressure Pump (Part Number 180B3007)
The Danfoss APP 7.2, part number 180B3007, is a fixed-displacement axial piston pump built to move demanding, low-viscosity, and corrosive fluids at high pressure. Its duplex stainless steel construction and water-lubricated design mean there's no oil in the pump itself — the process fluid does the lubricating, which keeps the design compact, keeps maintenance simple, and keeps contamination risk low. Because flow output tracks directly with shaft speed rather than dropping off under counter-pressure, the pump holds steady performance even as system conditions change.
This model sits in the mid-range of Danfoss's APP lineup, delivering flow up to roughly 120 L/min (about 31 gpm) at continuous outlet pressures up to 80 bar. That combination of flow and pressure makes it a practical fit for reverse osmosis systems, desalination trains, and other high-pressure water applications where reliability and efficiency matter as much as raw output. It isn't limited to marine or seawater work either — the same core design shows up in irrigation systems, general water treatment, and industrial fluid-handling setups wherever a compact, low-maintenance high-pressure pump is needed.
Buyers typically choose the 180B3007 when they need a proven, drop-in replacement or OEM component rather than a full custom pump package. Its straightforward mechanical principle, long service intervals, and minimal moving parts make it a dependable long-term choice for plants and systems that run continuously and can't afford unplanned downtime.
Key Features
- Axial piston design for a light, compact footprint
- Water-lubricated operation — no oil required
- Fixed displacement: flow is proportional to shaft speed, independent of counter-pressure
- Duplex stainless steel construction for corrosion resistance
- Low part count for easier maintenance and long service life
- High efficiency across the operating range
Applications
- Seawater reverse osmosis (SWRO) desalination
- Brackish water and industrial reverse osmosis systems
- Zero liquid discharge (ZLD) and minimal liquid discharge (MLD) treatment
- Industrial and municipal water treatment
- Irrigation and general water supply systems
- High-pressure salt water and process fluid pumping
Specifications
- Part number: 180B3007
- Model: APP 7.2
- Pump type: Axial piston, fixed displacement
- Body material: Duplex stainless steel
- Geometric displacement: 70 cm³/rev
- Max flow: approx. 120 L/min (31.2 gpm)
- Rated flow at 1500 rpm: approx. 6.01 m³/h
- Outlet pressure: 20–80 bar continuous (up to 83 bar on some ratings)
- Inlet pressure: 0.5–5 bar
- Speed range: 700–1,800 rpm
- Torque at max outlet pressure: 98 Nm
- Power at max speed/pressure: 22.0 kW
- Port connection: Flanged inlet and outlet ports (compatible with the Danfoss port flange kit used across the APP 5.1–10.2 series)
Frequently Asked Questions
Q: What fluids can the Danfoss APP 7.2 handle?
It's designed for low-viscosity, corrosive fluids such as seawater and brackish water, making it well suited to reverse osmosis and desalination duty.
Q: Does the APP 7.2 pump require oil lubrication?
No. It's a water-lubricated pump, so the process fluid itself lubricates the internal moving parts, eliminating the need for oil.
Q: How does pump flow change with system pressure?
It won't — the APP 7.2 is a fixed-displacement pump, so flow is set by shaft speed and displacement, not by downstream counter-pressure.
Q: Is the 180B3007 suitable for non-marine industrial use?
Yes. While it's widely used in seawater desalination, the same pump is also used in irrigation, water treatment, and general industrial water-supply systems.
Q: What maintenance does this pump typically need?
Its simple axial piston design with few moving parts is built for long service intervals and straightforward upkeep compared to more complex pump types.
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