By Shane Takaki – Triple R America


Ask an engineer to design anything and the response will typically be, “You can have good, you can have fast, you can have cheap; pick two.”

When faced with the challenge of cleaning oil, Triple R’s engineers chose a design that’s good and economical, compromising on speed. Triple R’s bypass oil cleaning systems are designed to take a slow trickle of oil through a 114 mm medium, delivering perfectly clean oil: good and economical. In fact, with Triple R oil cleaning systems your oil can become cleaner than new.

There will be those who say that they already have filtration on their system and don’t need any more. The vast majority are owners of spin on, inline filters. The engineers of this type of filter made a different choice: they chose fast and cheap. These filters take 100% of the flow, so they do their work in one pass. The compromise is that it is impossible to clean efficiently so fast.

Take note that many of these inline filters come with incredible micron ratings. A rating of 1 micron absolute means that in a test environment, in a single pass, the largest particle that can pass through the filter is 1 micron. Note also that ISO has moved away from such tests because they do not reflect actual usage. To the end user, test results from a single pass are largely useless, so ISO developed beta testing, a multi-pass test that better reflects actual usage conditions. This is why Triple R espouses beta testing; it provides the user with information that is relevant to the customer’s needs.


There are three ways that Triple R oil cleaning systems can be installed. All are a kidney loop, returning to tank, but the oil cleaning systems differ to fit the applications. The most common installation is from a high pressure line in a hydraulics application. Triple R BU series housing tees off a working pressure line, often immediately after the pump, and returns to tank. This system incorporates a pressure compensated flow control valve to reduce the flow to a trickle. (An integrated check valve ensures that the pressure inside the housing stays within spec.) The oil flows slowly over the top of the filter element, down through 114 mm of medium to the bottom of the housing, where it returns to tank.

The second installation is in a low pressure system, such as engine lubrication. In an engine, oil from the pump goes through the oil gallery, is fed into the Triple R AL series housing, and again flows slowly from the top of the filter element down through 114 mm of medium to the bottom, where it returns to tank. This system does not require a flow control valve or a check valve and so is more economical.

Finally, we have systems that install completely offline, drawing from tank and returning to tank. These systems have their own pump and motor, making them completely independent of the equipment while cleaning the oil thoroughly and completely. Contamination never sleeps, and Triple R’s SE series of offline systems doesn’t either.


From its simple beginnings, the Triple R product line has grown to be able to accommodate all kinds of oil in a wide variety of applications. Our M series filter elements are commonly used in (high pressure) hydraulics applications where filtration requirements are very high. Our E series filter elements are recommended for (low pressure) engine applications where longer maintenance intervals and extending oil life are priorities. In applications where it is impractical to use system pressure to feed the oil cleaning system, Triple R offers a system complete with its own pump and motor.

Triple R complements our filtration technology with product families of vacuum dehydrators, centrifuges, magnet conveyors, oil separators, water separators and the Quicktron (an air bubble remover). With this complete product line, Triple R is able to meet all of your oil cleaning needs.

Contact your local authorized distributor, OTP Industrial Solutions, for more information on Triple R products and the solutions they can provide to you.