Racor Air Filters/Crankcase Ventilation
Racor Crankcase Ventilation & Air Filtration: Engine Protection You Can Trust
When it comes to managing the invisible threat of engine blow-by gases, few names carry more authority than Racor — a division of Parker Hannifin and a globally recognized leader in filtration technology. Within the Air Filters/Crankcase Ventilation category, Racor has built a reputation for engineering solutions that go far beyond simple filtration, actively protecting engines from the damaging effects of oil mist, blow-by vapors, and uncontrolled crankcase pressure.
The Science Behind Racor CCV Systems
At the heart of Racor's crankcase ventilation lineup is their proprietary Vaporbloc™ media — a depth-loading, micro-glass fiber filtration material engineered specifically to capture oil aerosols and contaminants from engine blow-by gases. Racor CCV filters remove contaminants down to 0.3 microns to protect engine parts and operate reliably across a wide temperature range, from -40°F to 240°F.
Racor offers both open and closed crankcase ventilation configurations. In an open system, the crankcase breather connects to a CV filter assembly with the outlet open to atmosphere — an effective oil mist removal approach for applications that allow crankcase venting. In a closed system, things get more sophisticated: blow-by gases are not allowed to vent to the atmosphere — instead, the cleaned and filtered gases are routed back to the inlet of the turbocharger to be burned in the engine.
CCV Series: Purpose-Built for Turbocharged Diesels
Racor's CCV Series is the cornerstone of their crankcase ventilation product range, covering a wide spectrum of engine sizes and industries. Especially suited for turbocharged diesels, Racor CCVs provide superior oil coalescence and crankcase pressure control under severe conditions, while also reducing NOx and hydrocarbon emissions by lowering combustion temperatures.
The engineering details reveal just how much thought goes into these units. Parker Racor CCV4500 units include stainless steel latches for tool-less element change, a die cast head, glass-filled nylon and black powder epoxy-coated steel bowl, and a drain check valve that allows collected oil to return to the crankcase. CCV units feature a unique crankcase pressure regulator with an integral bypass valve that protects against crankcase over-pressure and under-pressure, preventing damage to seals and oil loss.
For maintenance, the only routine maintenance required for a Racor crankcase ventilation system is filter replacement, with a typical service life of 750 hours in diesel applications. Filter elements are available in high, low, and ultra-density media options to suit varied application demands, and the systems support high flow rates suitable for engines up to 2,000 HP.
Broad Application Coverage
Racor CCV systems are suited for on- and off-highway use, including truck and bus, construction, agriculture, and marine applications. Marine diesel engines in particular can benefit from a combination CCV and air filter/silencer system, with Racor's AF Series marine air filter/silencers featuring washable media and rugged construction for extended service life.
Whether you're maintaining a commercial diesel truck, a turbocharged marine inboard, or an agricultural powerplant, Racor's Air Filters and Crankcase Ventilation solutions deliver proven performance backed by the engineering depth of Parker Hannifin. Explore the full range of Racor filtration products to find the right system for your engine.