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Dedicated Filtration

Varnish Removal System

Varnish is a common problem for a wide range of hydraulic fluids and lubricants, especially in turbine and plastic injection molding applications. It results in stickiness around the valves, shorter fluid life, shorter filter life and unscheduled downtime.

This is the most complete varnish removal and prevention system on the market. It removes oxidation by-products and prevents varnish formation during the cool down.
Dedicated Filtration Varnish Removal System 1 vx2c_350_jpg


Varnish is a common problem often seen in applications that use the new group II & III base oils. It’s a result of water problems, air problems, temperature fluctuations and oil degradation. This is often a problem in a variety of industrial applications like…
• Power generation (turbines)
• Steel, copper, aluminum (presses)
• Pulp and paper (paper machines)
• Plastic injection molding and blow molding
• Automotive and tires (stamping / forging / curing)
• Petrochemical (compressors)
• Aerospace (flight simulators)



• Reduces the rate of additive consumption
• Reduces and prevents servo valve sticking
• Removes oxidation by-products
• Does not add water or other by-products to the system
• Operates at a wide range of oil temperatures
• Compatible with all mineral and phosphate ester fluids
• Operates on fluids containing more than 500 ppm of water
• Can be configured for applications with fluid volumes up to 36,000 liters (9,500 gallons)
• Due to its modular design, you can choose from a variety of housing lengths or combine multiple housings for a larger system


Nominal Flow
• 1 l/min (0,26 GPM) per cartridge
By-pass Opening Pressure
• 5 bar (72,5 psi)
Pump Safety Valve
• 15 bar (217 psi)
Fluid Temperature
• 20° – 80° C (68° – 176° F)
Power Supply
• 10.00 / 254
Inlet Connection
• Depending on the pump, contact a Des-Case sales representative
Outlet Connection
• 1/2’’ BSPP female
System Seal
• FPM (Viton)
Fluid Compatibility
• Mineral oil, synthetic ester, phosphate esters (for other fluids, please contact us)
• Unit dependent, contact a Des-Case sales representative
• Unit dependent, contact a Des-Case sales representative

Element Specs
Cartridge Material
• Long Fiber Cellulose / Polypropylene
Apparent Dirt Holding Capacity
• 1.955 g (4,3 lb)
Water Absorption
• 2.6 liters (0.69 gal)

Dedicated Filtration Varnish Removal System
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