Duplex Strainers

Duplex Strainers

Many times, critical systems cannot be shut down for strainer basket cleaning. These systems include cooling water, compressors, con- densers, fire lines, fuel lines, chemical process systems, pump suction applications and other similar services. For these applications, the Mueller Steam Specialty Duplex Strainer is the perfect choice. For sizes 3⁄4″ through 6″, the Revolutionary Ball-PlexTM duplex strainer from Mueller Steam Specialty has all of the features you need. Bubble tight seating, true in-line maintainability, extremely easy seat replacement and long, trouble-free service life in a very simple and rugged design. Available from stock in cast iron, bronze, carbon steel and stainless steel. Other alloys are also available. All of the Ball-PlexTM units are standard with 316 SS balls and PTFE seats. Other alloys are also available for the balls. Threaded and flanged units are available with full rated pressures from Class 125 to Class 300 (Class 600 flanges also available). With the floating ball design and relatively low torque requirements, it is very easy to automate these units for remote operation.

Technical Specification


Main Features:

Mueller Steam Specialty Ball-PlexTM Duplex Strainer basic model numbers are based on
ANSI Class connections as follows:

  • 791 for Class 125
  • 792 for Class 150
  • 794 for Class 300
  • 796 for Class 600
  • For Marine and other larger styles:
    690 for 50psi (marine duplex with Class 125
  • 691 for Class 125
  • 692 for Class 150


Main Component

Product Detail



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