Hydraulic Filter

Hydraulic Filters – Manufacturers & Suppliers in India

Contamination is still the main reason for trouble and down times of a hydraulic system. Contamination is already created during the manufacturing the components and in addition the fluid has basic contamination. During operation of the system further contamination is created by abrasion and seal material. Filters in a hydraulic system have to reduce this contamination to an acceptable level. Thus by filter, conditions are created for a trouble free and low-maintenance operation.

A hydraulic filter, Hydraulic Filter Manufacturer consists of the element, the housing and additional accessories like by pass valve, contamination indicator, reverse flow valve etc. The housing is made up of the head and the bowl. The element consists of the internal body, the pleated star and the end plates. With only few exceptions, the fluid flows in filter -out- to- in.

The hydraulic filter needs additional accessories like by pass valve and indicators. Since operating pressure is high, it is necessary to change the element (or clean the element in case of re-usable) as soon it reaches its limited differential pressure. To indicate the same, indicator is required in the filter. Many varieties of indicators are available – Visual indicator & electrical indicator. Electrical indicator gives indication by blowing the bulb or alarm. If somebody ignore the indications, it is obvious that the differential pressure of filter will increase and in worst case filter may burst! To avoid such situation, by pass valve is required to by pass the fluid and protect the filter. It is important that in such case, un-filtered fluid will go in to the system.

The type of filter medium used is very important for the success of hydraulic fluid and lubricant filtration, particularly in the case of pressure line filters for the most part, the type of filter medium used are:

• Impregnated Cellulose Paper
• Micro fiberglass or
• S.S. Wire Mesh.

Pressure line filters must be installed downstream of the pump and pressure relief valve to protect upstream of the components. If systems dose not aloud interruption, we need to put duplex filter.

Return line filters are those filters, which are installed in the lines leading back to the tank. The filter head is permanently mounted to the tank and the outlet port of the filter projects into the tank itself. Return line filters collect all those contaminants, which are flushed out of the system and not captured by pressure line filters.

For un-interrupted operations, duplex filters are required in hydraulic system. This is a sat of filter connected with inter connecting valves to keep one as a stand-by and one filter in operation.

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