Hydraulic reservoirs "breathe" air in and out as the oil level rises and falls. This circulating air contains particles and moisture that can cause corrosion, increase equipment wear and reduce fluid performance. Breathers protect your hydraulic system by filtering out damaging moisture and particles. Vickers offers H20-gate and Mobile-gate breathers to create moisture barriers and prevent the buildup of damaging water vapor in hydraulic systems. Also available from Vickers are Dirt-gate breathers which are designed to filter out particles.
Return line filters usually have spin-on type elements, cartridge elements in an in-line mounted housing, or cartridge elements within a housing that is mounted directly within the reservoir itself (sometimes referred to as an in-tank filter). Return line filters are an integral part of an effective contamination control solution. Return line filters are ideal for systems where the pump is the sensitive component, and they are an economic means for achieving the target cleanliness level. They are often placed before the fluid enters the reservoir in order to prevent debris and particles from recirculating through the system. Further, they are a crucial ...
In-tank filters are a special type of low pressure return line filter. In-tank filters are mounted directly to the reservoir tank top and have an accessible head that is located outside of the reservoir while the body of the housing is located inside the reservoir. The exposed cover allows the element to be easily replaced as needed.
The filter housing may be equipped with diffusers to ensure that the returning oil energy is gradually dissipated within the reservoir fluid to minimize the potential for aerating or foaming of the oil. In addition, the diffuser helps direct the fluid outward against the walls of the reservoir to aid in the heat ...
Spin-on filters typically consist of a head mounted directly in-line with the return piping and a canister containing an element which screws onto a threaded post. The canister seals to the head to prevent leakage. These are an effective and economical choice of filter where the return line pressure is low and there are no large flow surges with the return line. They are also easily installed without specialty equipment or tooling.
Applications include; agricultural equipment -tractors, spreaders and harvestors, metal forming presses, strapping systems, brush chippers, turf maintenance equipment and small power ...
Pressure filters are used to protect downstream components from contamination levels beyond the recommended cleanliness target. Because they are typically sized for the output of the pump, pressure filters tend to be smaller than return line filters when cylinders are present. In systems using accumulators, pressure filters must be sized according to the large effective flow rates present during parts of the duty cycle.
In some applications, pressure filters are used as isolation filters to protect specific components such as proportional or servo valves. Typically these filters are non-bypass and employ elements that are capable of withstanding ...
Off-line filtration systems (also referred to as a kidney loops or recirculation loops) are typically found in variable volume pump systems where system filters do not see continuous flow or where the return flow volume makes a return filter impractical. These systems typically consist of a seperate pump and filter plumbed to the reservoir along with associated components to provide a continuos recirculating flow of fluid from the reservoir through the filter and back to the reservoir.
There are many advantages to incorporating an off-line filteration package. Because the system is at a low pressure and the flow is continous with little or no flow surges, ...
