What is strainers and installation of strainer?

What is strainer?

Strainers are important components of piping systems to protect equipment from harm caused by dust and other objects that the process liquid can carry. Simply strainers are kind of filter that is installed to prevent foreign matter that damage pipeline equipment.

Types of strainers:

There are mainly two types of strainer Y-type strainers and Basket Strainer:

Y-Type Strainer:


These are Y shaped equipment used to remove foreign matter from pipelines and provides protection for pumps, meters, valves, and other similar mechanical equipment.

The Strainer enhances medium clearance and extends valve life, protects costly pumps, meters and other equipment. It can be used for air, air, gas, oil, steam and other liquids.

Basket Strainer:

Basket strainers are intended for horizontal line assembly. They are frequently used in apps for fluid service. They remove material that is not wanted in the fluid and this can be a valuable product that can be saved at some point.

What’s the difference between a Filter & a Strainer?

A filter is a tool that extracts particles from a fluid or gas in question. It involves a disposable medium to remove designated micron size particles.

Simply, A strainer is also a filter; however, to extract bigger particles from process flow, it utilizes a perforated tray or display panel. A Strainer’s main benefit is that it can be reused.

Installation consideration of strainer:

Location selection:

  • Stainer should be installed at a position that allows valve maintenance

  • The strainer should be mounted in the correct orientation with the angled portion of valve pointing.

  • To get maximum efficiency, strainer should be mounted in the direction of flow. An indication arrow will be cast on the valve body.


  • Check all machined surfaces to ensure that they are defect-free and that the inside of the strainer is free of foreign objects.

  • All strainers should be mounted with the arrow pointing towards the stream path on the strainer body.

  • A suitable sealant should be used on the tubes for the assembly of threaded strainers.

  • The flanged bolting should be loosened gradually moving back and forth in a circular cycle for the assembly of flanged strainers until all locks are rigid.

  • The system can now be pressurized gradually while checking for any leakage around all connections.

  • If leakage occurs, depressurize the system and start the installation procedure over.

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Very helpful. Thank you!:slightly_smiling_face:

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