Danfoss 180B0023 PAH 6.3 Axial Piston Pump
If you need a high-pressure pump that runs clean, runs quiet, and doesn't need oil to stay lubricated, the Danfoss PAH 6.3 piston pump earns its reputation fast. Built with a stainless steel AISI 304 housing, this compact axial piston pump uses the water itself as the lubricating medium, which means there's no risk of oil contamination reaching your process water. That single design choice makes it a favorite across humidification, fire protection, and industrial water treatment applications where product purity actually matters.
What sets this pump apart from a lot of high-pressure alternatives is how little maintenance it demands relative to its output. With a geometric displacement of 6.3 cm³/rev and the ability to handle up to 160 barg of outlet pressure, it delivers serious performance in a housing small enough to mount almost anywhere, vertically or horizontally. Danfoss designed the PAH series for long service intervals, and this unit is rated for roughly 8,000 hours between inspections when properly filtered and operated within spec, which keeps downtime and part-replacement costs low over the life of the equipment.
Whether it's powering a water mist fire suppression system in a commercial building, supporting a humidification line in a manufacturing facility, or serving as the pressure source in a hydraulic test bench, the 180B0023 PAH 6.3 gives engineers a dependable, oil-free option that's easy to integrate and built to last.
Key Features
- Oil-free operation using water as the lubricating fluid
- Stainless steel AISI 304 housing for corrosion resistance
- Compact, lightweight design suitable for vertical or horizontal mounting
- High mechanical efficiency eliminates the need for a separate cooling circuit
- Long service interval, up to 8,000 hours between inspections
- Certified to ISO 9001 and ISO 14001 quality standards
- ATEX, ABS, and DNV GL certification available on request
- Low noise and vibration when mounted correctly with dampers
Applications
- High-pressure water mist fire suppression systems
- Industrial and commercial humidification systems
- Stationary and mobile hydraulic systems
- Flushing and cleaning processes
- Reverse osmosis and desalination pretreatment
- Aeroponic and horticultural irrigation systems
- Hydraulic test benches and research equipment
Specifications
- Part Number: 180B0023
- Model: PAH 6.3
- Pump Type: Axial piston pump
- Housing Material: AISI 304 Stainless Steel
- Geometric Displacement: 6.3 cm³/rev (0.38 in³/rev)
- Max Outlet Pressure: 160 barg / 2,321 psig
- Continuous Inlet Pressure: 0–4 barg / 0–58 psig
- Speed Range: 700–1,800 rpm
- Ambient Temperature Range: 0°C to +50°C
- Pressure Port: G 1/4, 11 mm deep
- Tank Port: G 1/2, 15 mm deep
- Recommended Filtration: 10 µm absolute, β10 > 5000
FAQS
Q: What makes the Danfoss PAH 6.3 different from a standard oil-lubricated piston pump?
A: The PAH 6.3 uses the process water itself for internal lubrication instead of oil, which eliminates the risk of oil contaminating the pumped fluid and removes the need for a separate lubrication or cooling system.
Q: What type of water quality does the PAH 6.3 require?
A: Danfoss recommends filtering the supply water through a 10 µm absolute filter with a β10 value greater than 5000 to protect internal components and extend service life.
Q: Can the PAH 6.3 be mounted in any orientation?
A: Yes, its compact and lightweight housing allows it to be mounted either vertically or horizontally, though it should be secured to a frame with dampers to reduce noise and vibration.
Q: How often does the 180B0023 pump need servicing?
A: Under normal operating conditions and proper filtration, Danfoss recommends inspecting the pump after approximately 8,000 hours of operation to check for wear on pistons and shaft seals.
Q: Is the Danfoss PAH 6.3 suitable for fire protection systems?
A: Yes, its high-pressure output and reliable, oil-free operation make it a common choice for water mist fire suppression systems in both commercial and industrial buildings.
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