What Are Flanged Marine Navy Duplex Strainers?

A Bronze Marine or Navy Duplex Strainer, sometimes called a twin basket strainer, is a type of filter built into a fuel, oil, or water piping system and it is used to remove large particles of dirt and debris. The bronze marine navy duplex strainer system usually consists of two separate strainer baskets housed. The system also contains a valve handle placed between the two strainer baskets to divert the flow of liquid to one strainer while the other strainer basket is being cleaned or serviced.

How Do Flanged Marine Navy Duplex Strainers Work?

Bronze Marine Navy Duplex Strainers are installed in the pipeline systems where flow cannot be stopped. Unlike other types of bronze strainers, it is easy to conduct maintenance on these strainers. Bronze duplex Strainers are used in Marine industries to remove hazardous elements that might cause partial or complete breakdown of operations if they get into the system. Since bronze Duplex Strainers are used when fluid flow cannot be interrupted it maintains a continuous flow by utilizing two separate basket chambers with integral valves to direct flow into one of the basket chambers. Bronze Duplex strainers are available with various sizes of connections, connection styles (flanged, ffd, threaded, etc.) , materials of construction, gasket composition, valve types, closure methods, and screen openings. Hawk Valve buys a wide range of bronze Duplex Strainers and maintains an inventory of varying sizes, materials and specifications.

Who Makes Bronze Marine Navy Duplex Strainers?

Leslie Duplex Strainers, Bailey Duplex Strainers , Hayward Duplex Strainers, S&P Duplex Strainers, Hellan Duplex Strainers and Tate Duplex Strainers are the most common brands of Duplex Strainers, especially in the Marine and Navy industry.
Each brand has slightly different styles and specifications but they perform the same function. Due to the high cost and lead time of these “made to order units”, customers will often entertain an alternate brand, face to face or drilling if supplied with matching flanges.

Strainer Materials: 


Strainer Pressure Ranges:

  • 125lb Duplex Strainers
  • 150lb Duplex Strainers
  • 200lb Duplex Strainers
  • 250lb Duplex Strainers
  • 300lb Duplex Strainers
  • 600lb Duplex Strainers