The Dresser Style 351 is a pipeline tee strainer designed to protect precision devices, such as regulation and metering equipment installed downstream of the strainer, from entrained system debris such as plastic shavings, fine particles of dirt, stones, gravel, rust, pipe scale and weld slag. Low pressure drop is achieved through a large element area and venturi port design. The elements are interchangeable and consist of corrosion resistant stainless steel in 20 and 100 mesh configurations and back-up disc for long service life.