Duplex Baskets Gaskets

Duplex

Duplex Basket Filter

Our Duplex Basket Filters are designed to provide uninterrupted filtration of process fluids by allowing continuous operation during cleaning or maintenance. Commonly referred to as Duplex Basket Strainers, these units are ideal for critical applications where system shutdowns are not permissible and process continuity is essential.

Duplex basket filters consist of two identical basket chambers connected through a changeover mechanism, enabling flow to be diverted from one basket to the other without interrupting operation. This design ensures consistent protection of downstream equipment while allowing one basket to be isolated, cleaned, or replaced during service.

Design and Construction

The Duplex Basket Filter features a twin-chamber body construction with an integrated manual or automated changeover arrangement. Each chamber houses a removable basket element designed to trap solid contaminants while maintaining efficient flow characteristics. The changeover mechanism allows smooth and leak-tight flow diversion, ensuring minimal pressure disturbance during switching.

The baskets are accessible through bolted covers, enabling safe and convenient maintenance. Heavy-duty construction, precision-machined internal components, and robust sealing arrangements ensure reliable performance under continuous operating conditions. Duplex basket strainers are particularly suited for high-flow, high-value process systems where equipment protection and uptime are critical.

Fabricated variants of these strainers can also be supplied with PTFE, Rubber, or Glass Flakes Epoxy (GFE) lining for enhanced corrosion resistance in aggressive process fluids.

Our Products Highlights

Available Specifications

End Connections

  • Flanged (RF / FF / RTJ)
  • Butt Weld (Bevel End)
  • Custom end connections on request

Pressure Ratings

  • ANSI Class 150 / 300 / 600 / 900 / 1500 / 2500
  • PN 10 / 16 / 25 / 40
  • Custom pressure ratings available on request

Size Range

  • 2” NB to 36” NB
  • Larger sizes available on request

Basket / Screen Options

  • Perforated baskets
  • Wire mesh baskets
  • Perforated plate with wire mesh lining
  • Reinforced baskets for higher differential pressure
  • Custom micron ratings as per service requirement

Materials of Construction

  • Carbon Steel (WCB, A516 Gr.60/70)
  • Stainless Steel (SS 304, 304L, 316, 316L, 321)
  • Alloy Steel
  • Duplex / Super Duplex
  • Hastelloy
  • Monel
  • Other exotic materials on request

Standards and Compliance

  • Designed in accordance with ASME / ANSI standards
  • Flanges as per ASME B16.5 / ASME B16.47
  • Face-to-face dimensions as per applicable standards or customer requirements
  • Manufacturing and testing as per approved inspection and quality plans

Applications

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