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Military Duplex Basket Strainers

Military Simplex Strainer

Military Duplex strainers are used in lines that continuously run and do not need to be shut down. The military duplex strainer uses a tapered plug design with twin baskets and is equipped with a diverter handle to switch from one basket to the other. The military duplex basket strainer not in use can be removed and cleaned without interrupting the pipeline flow. S & P duplex strainers utilized an increased wall thickness, are offered in 150# and 250# class, and have been shock tested to MIL-S-901D.

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Military Duplex Basket Products

SizeOperationFlowTechnical Drawing
1″ – 8″DuplexStraightStaplesAndPfeiffer_123_1501.pdf

Model 123 

Duplex Basket Strainer, In-Line Flow, Bronze

Duplex Strainers are available in sizes starting at 1″ and can be as large are 8″. Hellan Military Duplex Basket Strainers can be supplied in ANSI, DIN or Navy Drilled to MIL-F-20042D flanges.



Hellan Strainers are used in all industries that require the collection and removal of particulate from fluid systems.  Listed below, are just a few of the ways Hellan provides industrial solutions to the global market.

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Our Quality

Hellan Strainers' self cleaning fluid strainers are ISO9001 certified, meet all Navy Mil-Spec requirements, are approved by the American Bureau of Shipping and Lloyd’s Register, listed by Underwriters Laboratories and designed in accordance with API, ASME and PED.

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