Construction of a Y Strainer

The simple construction and reliability of Y Strainers have led to their widespread use in engineering systems and industry for the mechanical filtration of flow from solid inclusions.

Mechanical filters consist of a housing and a filtering element. The housing of the filter is usually Y-shaped, made of bronze, brass, cast iron, or steel, with a flanged or threaded connection to the pipeline. The filtering element is a perforated sheet or stainless steel mesh rigidly attached to the cover of the sludge collection reservoir.

Bronze and brass filters are used for nominal passage diameters up to DN50 inclusive. Brass pipeline fittings are characterized by low cost and high reliability. The downside of brass filters is zinc leaching, which is selective corrosion where zinc is removed from the brass, leaving the copper. Manufacturers of high-quality brass filters have solved this problem by using brass resistant to zinc leaching.

Y Strainers made of cast iron and stainless steel are typically used for pipeline diameters starting from DN40, although smaller sizes are also available. Cast iron filters are known for their low cost, while stainless steel filters are highly resistant to aggressive media.

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