Pall HLP6 Oil Purifier
Designed from over 30 years of field experience, the Pall HLP6 oil purifier combines high mass transfer efficiency with exceptional reliability and ease of use.
Efficient removal of water contamination in lubrication and hydraulic systems to prevent operational and maintenance issues.
Water contamination causes critical system problems
Water contamination in oil systems is responsible for major maintenance and operational problems in lubrication and hydraulic circuits, including:
Increased corrosion, especially at bearing locations
Increased oil oxidation and acid build-up
Sluggish response of control systems
Removing free water is not enough
Field experience shows that removing only free water using centrifuges or coalescers does not protect against corrosion and fluid degradation.
To ensure proper system protection, both free water and dissolved water must be controlled.
Free water vs dissolved water
In typical oil systems, temperature variations continuously affect dissolved water levels.
At the reservoir:
Both free and dissolved water must be removed
Otherwise, dissolved water may become free water when oil cools
This is especially critical when oil passes through cooler parts of the system.
Key system features
Separation Tower
- Designed to maximize air-oil exchange surface
- Enhances water removal efficiency through mass transfer
Vacuum Pump (Claw Design)
- Not susceptible to oil carryover
- Requires minimal maintenance (annual)
Mist Eliminator
- Stainless steel packing prevents oil carryover
- Returns coalesced oil back into the system
Oil Delivery System
- Pressurized delivery via dedicated inlet pump
- Independent of head pressure for flexible installation
Level Control System
- Automatically adjusts flow rate
- Maintains optimal internal tower level
- Prevents fluid level trips
Integrated Water Sensor
- Continuous and precise monitoring of oil moisture
Filtration Technology
- Equipped with Ultipleat® SRT filtration
- Advanced particle control
Automation
- Fully PLC controlled
- Designed for unattended operation
The HLP6 purifier is designed to:
Remove 100% of free water and gases (under steady-state conditions)
Remove up to 80% of dissolved water and gases
Remove solid contaminants with 99.9% efficiency (down to 3 microns)
The HLP6 demonstrated a 40% faster dehydration rate compared to a leading similarly sized purifier.
Why dissolved water control matters
If only free water is removed:
- Cooling of oil can increase harmful free water
Mass transfer dehydration:
- Reduces water below saturation point
Keeps water levels low even after cooling
👉 This prevents the formation of damaging free water.
Key advantages
Improved system performance
- Fewer operational delays
- Increased reliability
- Reduced downtime
- Lower power consumption
- Suitable for high viscosity oils (up to 1,000 cSt)
Extended fluid life
- Reduced oil change frequency
Reduced system wear
- Less frequent component replacement
- Reduced spare parts inventory
Reduced disposal costs
- Lower waste oil disposal
- Reduced contaminated fluid handling
Applications served
Power Generation
- Main turbine lube oil
- Boiler feed pump reservoir
- Transformer oil
- EHC systems
Pulp and Paper
- Wet end/dryer lubrication
- Press section systems
- Steam turbine lubrication
Primary Metals
- Roll mill hydraulics
- Gear and pinion lubrication
- Roll grinder systems
Light Industrial
- Bulk oil reclamation
- Blow molding
- Injection molding
- Machine tool hydraulics
- Automotive transfer lines
Fuels and Chemicals
- Extruder gear boxes
- Compressors
- Turbine lubrication
- Pump reservoirs
Why dissolved water control matters
Specifications:
- Flow rate: 6 GPM (22.7 L/min)
- Viscosity range: 3 to 1000 cSt
- Max inlet temperature: 76°C (170°F)
- Ambient temperature: 3.9°C to 40.6°C
- Max outlet pressure: 80 psig
- Heater: 4KW (PLC controlled)
- Filtration: 3–22 microns at 99.9% efficiency
- Dimensions: 72” H x 48” L x 32” W
- Weight: 1150 lbs
Reliable oil purification backed by 30+ years of expertise
A proven solution for efficient, reliable, and continuous control of water contamination in oil systems.
- projects@afeservices.us
- Sunrise, FL
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