Duplex filter, also known as parallel switching filter, uses two three-way ball valves to assemble two single cylinder filters on a single base. It is a device that cannot be missing in the pipeline system for conveying media, and its function is to filter mechanical impurities in the media. Duplex filter is often installed on the low-pressure pipeline or return pipeline of the hydraulic system, which can prevent rust, sand particles, and Filter a small amount of solid particles in the liquid to protect the accessories on the equipment pipeline from wear and blockage, in order to protect the normal operation of the equipment.

This DN50 duplex filter is used in the hydraulic oil system of Indonesian customers to filter impurities and rust particles in the engine oil. The filter is equipped with a pressure balancing device and a pressure difference indicator. When the pressure drop increases due to clogging of the filter element, the indicator will send a signal to clean or replace the filter element.