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SLLF series filter is composed of two single bowl filters and one 2-position 6way directional valve. It is simple in construction and easy to use. There is a by-pass valve and two contamination indicators in it, for protecting the lubricating system safety.

The feature of this filter allows continuous operation even if the clogged element needs replacing for a clean one, After opening the balance valve and then turning the directional valve, the other filter will begin to work in the lubricating system; the clogged element should be changed at that time. This series filter is used in lubricating systems of heavy duty, mining and metallurgical machines.

The filter consists of two single-cylinder filters, two one-way valves, a reversing valve, a transmitter, etc. It can replace the filter element without shutting down the system, and is suitable for medium and low pressure hydraulic systems that work continuously.

SDRLF series filter is composed of two single Bowl filters and a 2-posi-tion6-way directional valve. It is simple in construction and easy to use. There is a by-pass valve and a contamination indicator in it, for protecting the hydraulic system safety. The feature of this filter allows continues operation even during element is changed for which is clogged by contaminants. After opening the balance valve and then turn the directional valve, the other filter begins to work, the clogged element should be changed in time. This series filter is widely used in the hydraulic systems of heavy-duty mining and metallurgical machines.

The filter is composed of two single-cylinder filters, a reversing valve, a bypass valve, a transmitter, a diffuser, etc. It is installed on the top of the oil tank and can replace the filter element without shutting down the system. It is suitable for fine filtration of return oil in continuously working hydraulic systems. It is used to filter out metal powder produced by the wear of various components in the hydraulic system and rubber impurities in seals. etc., to keep the oil flowing back to the tank clean to facilitate the circulation of oil in the system.

DRLF series filter is used in return line; it can remove all the contaminants from the hydraulic system, keeping the oil back to the tank clean. The element of this series is made of glass fibre; it has high efficiency and filtration, large dirt capacity and lower initial pressure drop. There is a by-pass valve and a contamination indicator. The indicator will act when the pressure drop across filter element attains 0.35MPa. The element should be cleaned or changed in time, if the system cannot be stopped or nobody replaces element, the by-pass valve will open to protect the hydraulic system safety.

This series of filter is widely used in the hydraulic and lubrication system of heavy duty machine, mining machine, metallurgical machine and so on.

ZU-H, QU-H series filters are of high pressure type and used in the pressureline of hydraulic system. Filter element is made of glass fibre or paper. Differentialpressure indicator signals when the pressure drop across filter element reaches.

PLFA series filters are of high pressure type and used in the pressure line of hydraulic system. Filter element is made of glass fibre or paper, Differential pressure indicator signals when the pressure drop across filter element reaches 0.5MPa.

PLF series filter is of high pressure type, and used in the pressure line of hydraulic system. It can remove all the contaminants from the hydraulic system. The element of this series is made of glass fibre, it has high efficiency and filtration, large dirt capacity and low initial pressure drop. Beta ratio is over 200. It has two protection equipment which are by-pass valve and contamination indicator, he indicator will act when the pressure drop across element attains adjust-able pressure. The element should be cleaned or changed in time. Compare to other filters, this kind of filter is designed into small size. It can be used in different pressure levels and can be easily installed and the filter element also can be easily changed.