Duplex Strainers

Duplex Strainer Cutaway IllustrationDUPLEX STRAINER

CUTAWAY VIEW 

OVERVIEW:  Stayflow Duplex Strainers are ideal when the piping stystem can not be shut down for basket cleaning. There are two screened baskets that trap debris, with a lever that switches between the two, allowing one basket to be cleaned with no interuption 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.

  

                                                                             Duplex Strainer Choices

  • The DIF and DIT model duplex strainers have iron bodies for use in continuous flow applications to avoid shutting down the system for cleaning. Flanged and thread ends respectively.  Not recommended for steam service. 3/4" to 4" diameters.

  • The DCF and DCT model duplex strainers have carbon steel bodies for use in continuous flow applications to avoid shutting down the system for cleaning. Flanged and thread ends respectively.  Not recommended for steam service. 3/4" to 4" diameters.

  • The DSF and DST model duplex strainers have stainless steel bodies for use in continuous flow applications to avoid shutting down the system for cleaning. Flanged and thread ends respectively.  Not recommended for steam service. 3/4" to 4" diameters.

     

  • The DBF and DBT model duplex strainers have bronze bodies for use in continuous flow applications to avoid shutting down the system for cleaning. Flanged and thread ends respectively.  Not recommended for steam service. 3/4" to 8" diameters.

  • The larger DIFL model duplex strainers have cast iron steel bodies for use in continuous flow applications to avoid shutting down the system for cleaning. Not recommended for steam service. Special low torque design. 6" and 8" diameters.

  • The larger DCFL model duplex strainers have cast carbon steel bodies for use in continuous flow applications to avoid shutting down the system for cleaning. Not recommended for steam service. Special low torque design. 6" and 8" diameters.

  • The larger DSFL model duplex strainers have cast stainless steel bodies for use in continuous flow applications to avoid shutting down the system for cleaning. Not recommended for steam service. Special low torque design. 6" and 8" diameters.

  • Stayflow fabricates high quality special duplex strainers in every configuration possible. 2" to 24" diameters.