What REALLY separates one filter manufacturer from another? Is it quality...performance...service...value...a warranty you can really trust? With Donaldson, you don’t have to choose one over the other – because you get it all. There are no compromises. What REALLY separates one filter manufacturer from another? We’re the first-fit choice of equipment manufacturers around the world – and we put the same technology and care into every Donaldson branded product. Over 100 years ago – we invented the first air filter for a heavy-duty engine. Today, OE’s around the world trust us as a first-fit manufacturer of top-performing, highly-innovative filtration systems for a wide range of on- and off-road equipment. For us, quality isn’t just a buzzword – it’s a foundational principle that drives design, manufacture and delivery of every product we make. We measure – and perform – to the most stringent quality standards in the industry. It’s something that simply comes standard with ALL Donaldson products.

We maintain the best in-stock filter and exhaust coverage for all your equipment – so you can get the parts you need, when you need them. We’ve built a strong manufacturing and distribution network, so the filter or part you need is never far away. With more than 15 manufacturing plants in the Americas – and a centralized distribution center in Rensselaer, IN – if your distributor or dealer doesn’t have a part in stock, we can get it to them quickly.ionic comfort compact air purifier review Our knowledgeable and extremely helpful sales, technical and customer support teams are available to help whenever you need us.air duct cleaning sunnyvale ca Support begins and ends with people. air purifier methane

We're told by our customers that we're the best in the industry on this measure. And there's a dedicated network of sales, technical and customer support people working diligently – every day –to make sure it stays that way. Different and Better Distribution We’re selective about who qualifies to represent Donaldson as distributor or dealer. It’s important to us – because it’s important to you. We've built one of the largest, strongest and most responsive distribution networks in the filter business. Because who you get your filters from locally can be as important as who manufactures them. You'll find Donaldson distributors and dealers to be proactive, responsive and there to help – day-in and day-out. No word-play, gimmicks or stalling here. We deliver a comprehensive warranty that covers our filters and your equipment – and works FOR you. Bottom line – any warranty is only as good as the company that’s standing behind it. At Donaldson, we understand that your vehicles and equipment are critical to your livelihood.

We’re passionate about helping you protect your investment. We stand behind the products we sell and the engines they're used on.The innovative three-stage filter DF-T(hree) is used for the purification of compressed air and gases in smallest places. The unique filter element combines 3 purification stages in one filter housing– a coalescence filter, an activated carbon adsorber and a high performance particle filter. It achieves quality class 1 acc. to ISO 8573-1:2010. The DF-T is ideally suitable as terminal filter, where the highest quality of compressed air is necessary and only small place for installation is available. TECH TALK - DECEMBER 2011 click here download brochureEngines are used in a variety of different environments, many of them where high or extreme amounts of dust are present. Dust and other contaminant needs to be removed before the air reaches the engine to prevent premature engine failure. Engines are fitted with air cleaners to remove this contamination from the incoming air.

Sometimes, the amount of contamination or dirt being removed from the incoming air is so great, the air cleaner reaches capacity very quickly and requires servicing. It is possible to extend this service interval greatly by using a pre-cleaner. What is a Pre-Cleaner? A pre-cleaner is a device which is installed in the intake system of an engine before the air cleaner. It removes much of the contamination and dirt from the incoming air. They are effective at removing the larger dirt particles and water droplets. As a result, they will greatly reduce the dirt reaching the air cleaner, resulting in extended filter life. How does a Pre-Cleaner work? There are many different types of pre-cleaners available. Most of them use some form of inertial separation process to remove dirt without using a replaceable filter Dirt particles are heavier than air and will try to continue traveling in the same direction even if the air flow is made to change direction. Effectively, the flow of dirt splits from the flow of air.

The heavier the particle, the more effective this process is. Does the choice of Pre-Cleaner matter?Apart from the different types of pre-cleaners, all pre-cleaners need the air flow to be moving at a reasonable speed for the separation process to work effectively. If the pre-cleaner is too large for the engine’s air flow, the air will not be traveling rapidly enough for the dirt to separate. The dirt will stay mixed with the incoming air. If it is too small, the level of restriction of the intake system will be too high for the engine. DIFFERENT TYPES OF PRE-CLEANERS An air ram, is the simplest form of pre-cleaner and is effective in removing dust and water at high speeds and is most suited to highway operation. They have the added advantage of reducing restriction to the air system at high speeds. It is important that they are installed correctly. They are ineffective at low speed and on stationary equipment. Often used as a second pre-cleaner for on-highway vehicles these are effective at removing larger dirt particles and water at speed.

They have a set of vanes that cause the air to spin as it passes through the unit with cleaner, dryer air continuing on to the air cleaner, with the dirt and water being expelled. These pre-cleaners have angled vanes that cause the incoming air to spin rapidly around the pre-cleaner. Dirt and water is collected in the outer bowl, while the cleaner air passes down the centre of the unit to the air cleaner. Once the bowl is full it needs to be emptied. Full view style pre-cleaners operate at about 75% efficiency. They are suitable in low speed and stationary applications. While they can be used on high speed vehicles, they will increase the level of restriction to the incoming air. This style of pre-cleaner works in a similar way to full view except they are self emptying. Working at 85% efficiency, they have a rotating vane that expels the separated dust out the side of the pre-cleaner. Again, while they can be used on high speed vehicles, when used at highway speeds they will cause an increase to the level of incoming air restriction.