Duplex Basket Strainer

Cast Duplex Basket Strainer
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Duplex basket strainers are pipeline strainers used in applications where the process cannot be stopped to clean the baskets. Duplex basket strainers are available in cast iron, cast steel, cast stainless steel, aluminum bronze as well as fabricated carbon steel, stainless steel and other alloys to handle almost every application.

Fabricated Duplex Basket Strainers

Duplex basket strainers are used where increase basket sizes are desired. Fabricated basket strainers can be designed to fit custom dimensions. This is particularly beneficial when replacing an existing strainer, thus keeping replacement costs low.

Fabricated Duplex Basket Strainer

• Fabricated carbon steel strainer body with bolted style cover
• 304 stainless steel basket with perforated (1/32”, 1/16”, 1/8”, 5/32” openings)
• Butterfly valve with cast iron body Buna-‘N’ seats, ductile iron disc, and stainless steel stem
• Lever operated valves with inter-connected linkage
• Positive seal valving

• Design pressure 150 psig @ 150°F
• Welded to ASME Section IX, certified welders
• Complete package is hydrostatically tested

Compact design allows for low installation cost.
Large capacity, heavy duty basket design for a long life.
Low pressure drop that provides for high flow capacity.
Efficient design requiring few moving parts and low maintenance costs.
Simple, easy, and effective switching of flow with positive shut-off.

Numerous vessel materials of construction such as stainless steel, copper nickel, monel, and others for corrosive environment

Variation in flange connection alignment
ASME Section VIII, Division 1, Code Stamp – supplied with complete material traceability
Vessels designed for high pressure/ temperature applications.
Special internal and external coatings
Cover lift (davit) assembly
Quick opening hinged covers
Latch bolt closures
Basket material of 316 stainless steel, brass,  monel, and others
Mesh lined basket – 20 x 20 to 500 x 500 mesh In-line connection arrangement – Model 544

In-Line Duplex Basket Strainer

Custom duplex strainer

The Model 544 inline duplex basket strainer is used when the existing piping cannot be offset.

Cast Duplex Basket Strainers

Engineered for optimal flow patterns, Cast Duplex Strainers, divert the pipeline flow from one basket to the other allowing the inactive basket to be cleaned without shutdown.

No special tools are needed to operate the handle or remove the straining element reducing in-line maintenance.

Duplex Strainers are available with threaded and flanged ends in a variety of materials. All cast iron and carbon steel units are epoxy painted to resist rust. They can be fitted with virtually any configuration of perforation or mesh lined straining elements. Straining elements can also be constructed from special materials such as Alloy 20.

Cast Iron

Cast Iron Duplex Basket Strainer
  • Class 125
  • 3/4″ – 2-1/2″ NPT
  • 1″ – 4″ Flanged

Stainless Steel & Carbon Steel

Stainless Steel Duplex Basket Strainer
  • Class 150
  • Class 300
  • 3/4″ – 8″
  • Threaded & Flanged

Aluminum Bronze

Aluminum Bronze Duplex Basket Strainer
  • Class 150
  • 3/4″ – 2-1/2″ NPT
  • 1″ – 4″ Flanged

Pipeline Strainer & Valve Catalog

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