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  • Simplex Strainer

    Simplex Strainer

  • Pig Handling

    Pig Handling

  • Pipeline Pig

    Pipeline Pig

  • Strainer Bathtub

    Strainer Bathtub

  • Fabricated Strainer

    Fabricated Strainer

  • Pigging Services

    Pigging Services

  • Fabricated Strainer

    Fabricated Strainer

  • Pig Launcher

    Pig Launcher

Duplex Strainers

Duplex Pipeline Strainers are also known as Twin Basket Strainers and Multi-Basket Strainers. It is a type of Filter built into a liquid or gas piping system and is used to remove particles of dirt and debris from the flow stream and/or the internal walls of the pipe. The Duplex Strainer System consists of two separate strainer elements (or baskets) housed within a special filter body. The system is operated via a valve (or valves in a manifold format) incorporated between the two basket elements to divert the flow of liquid or gas through one Strainer while the other Strainer Element is being cleaned. On some Strainers, the valve will operate automatically at a pre-determined differential pressure setting and the Strainer will perform a self-cleaning operation.

These types of Strainers are installed in pipeline systems where it is not possible to stop the flow to change out the Element or Basket. Depending upon the pipe size, they are capable of filtration down to 40 Microns.

Duplex Basket Strainers are installed in industries where the impurities (particles or debris) are mostly solids and unlike other types of strainers, they are significantly easier to operate and maintain. Industries where duplex basket strainers are commonly used include: power generation, chemical, oil, gas, pulp and paper, petrochemical, pharmaceutical, metals and mining, water and wastewater, fire services, refineries, food, paint and process industries.

In addition to the wide range of Standard Cast Duplex Strainer Assemblies it is also possible to provide strainers as pre-fabricated assemblies using other basic strainer types such as Y-Strainers, Simplex & Fabricated (T-Type) Strainers and Cast and Forged Strainers. These assemblies incorporate valved piping  manifolds using Ball, Butterfly or Gate Valves.

Complete assemblies are designed and produced to suit low, medium and high pressure requirements and a wide range of filtration levels.

Materials of construction


Iron, Steel, Stainless Steel, Duplex, Bronze and Alloy Bronze


Steel, Stainless Steel, Duplex, Aluminium & others

We also supply the following Strainer configurations :

HORIZON Industrial is a recognised leader in the supply of Pipeline Strainers & Filters to customers across all industry groups throughout Australia and Internationally. All strainers are provided with code and statutory compliance along with stringent quality control in accordance with recognised Standards and certifying authorities.