Description

Duplex Strainers are ideal when the piping system can not be shut down for basket cleaning. Two screened baskets trap debris, with a lever that switches between the two, allowing one basket to be cleaned with no interruption in flow – a benefit that is sometimes crucial.

The duplex strainers (dual strainers) are available with threaded or flanged connections. Standard screens are provided for WOG (water, oil, gas) service, but other screens are available on request. Different screens can also be used in each of the chambers, so that different batches can utilize the most appropriate screen.

These strainers are usually supplied in one of four materials: iron, carbon steel, bronze, or stainless steel. Iron is used most often because it costs the least, and has good corrosion resistance in water and many other services. Carbon steel is used where higher temperatures, or concern with thermal or mechanical shock is an issue, which makes them popular in the oil and petrochemical industries. Bronze handles thermal and mechanical shock better than iron, and is better in some corrosive applications, but is limited in temperature range. Stainless steel is needed where corrosion could be an issue, and is widely used in the chemical, food, and pharmaceutical industries.