Choosing the Right Strainer: A Guide to Inline vs. Y-Strainers

10 Jun.,2024

 

Choosing the Right Strainer: A Guide to Inline vs. Y-Strainers

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Filtration systems are crucial in various sectors, from municipal wastewater treatment plants to food processing and chemical manufacturing. These industrial filtration processes are designed to remove unwanted solid particles that can cause wear on pump equipment, leading to breakdowns and work stoppages. Among the methods employed, industrial strainers are the primary defense line to ensure product quality, prevent premature breakdowns, and maintain operational efficiency.

Y-line strainers and inline strainers are the two most commonly used types for industrial applications. Given strainers' significant role in these systems, having a good grasp of their functionality within pumping systems is vital for pump operators and maintenance workers. While understanding the differences between a Y-strainer and an inline strainer is key, knowing which one suits a specific purpose is equally important.

Two Strainer Types & How They Differ

Strainers are used to filter solid contaminants from a variety of fluids. They remove particles suspended within a liquid to protect downstream equipment from damage, including pumps. Two of the most widely used types are often referred to as y-strainers and inline strainers. Unlike filters, which remove smaller solids from fluids, strainers remove larger particulate matter.

A strainer&#;s primary purpose is to protect equipment from damage. Y-strainers and basket-shaped inline strainers are used in water distribution systems, affecting the quality of drinking water received. While both have advantages and disadvantages in certain applications, both essentially do the same job of removing larger particles within a flowing liquid.

Both types of strainers are named according to their positioning in the pumping system and shape. Basket-style inline strainers work only when installed horizontally, while Y-strainers have greater flexibility in how they&#;re installed and can even be installed vertically. Additionally, both types of strainers can be positioned inline, which can involve bolting, threading, or welding a strainer &#;with parts arranged in a line.&#;

What is an Inline Strainer? 

Also known as T-strainers, T-line strainers, or simplex strainers, inline strainers - or basket strainers due to their shape - are placed before nozzles, pumps, or valves to trap debris that could damage sensitive equipment. Typically resistant to solvent solutions with salt and mineral-based acids, inline strainers are easy to clean and maintain with minimal monitoring.

Materials from which inline strainers are made often determine their application: 

  • Cast copper inline strainers: Durable and corrosion-resistant, inline strainers made from cast copper are used in instrument control systems, dental equipment, and apparatus used for processing beverages, to protect equipment like pumps and control valves.
  • Nylon inline strainers: Able to resist corrosion, humidity, and high temperatures, nylon inline strainers protect sensitive equipment like pumps and valves within sprayers for agriculture, pressure washers, and medical devices.
  • Polyamide inline strainers: A thermoplastic that&#;s reinforced with fibers made from glass, polyamides offer inline strainers greater rigidity and strength while providing better corrosion and heat resistance; used to protect pumps, control valves, and other similar equipment inline, the strainers are used in higher flow industrial processes.
  • Polypropylene inline strainers: A lightweight thermoplastic polymer, inline strainers made from this material resist abrasions, corrosion, and impact while also offering greater surface hardness; these strainers are typically used to protect control valves, pumps, and regulators in process equipment for food processing, wastewater treatment, and similar industrial applications.
  • Stainless steel inline strainers: Able to withstand corrosion from harsh chemicals and corrosive fluids, stainless steel is often used in applications involving corrosive gases, fluids, and oils where high temperatures and pressures are issues; inline strainers made from stainless steel are used to protect an array of processing equipment for chemical manufacturing, food processing, pharmaceutical manufacturing, water management, and other industrial applications.

Other materials can also be used for making inline strainers, including steel, other ferrous alloys and even brass. The material's properties will often determine what application an inline strainer would best serve.

What is a Y-Strainer? 

Y-strainers mechanically filter out solids from pipelines carrying liquids or occasionally gases, albeit with a distinct shape. Unlike the conventional basket design in inline strainers, Y-strainers boast a straining component crafted from wire or perforated mesh. These strainers are employed in pipelines to safeguard control valves, meters, pumps, regulators, steam traps, and other processing equipment. In numerous scenarios, Y-strainers emerge as the most cost-effective choice, particularly when dealing with a relatively small volume of material that necessitates removal.

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Y-strainers require less frequent cleaning than inline strainers due to their lower material collection. This infrequency is advantageous, although cleaning involves shutting down the line and manually washing the screen after removing the strainer cap. Typically utilized for fluids or gases with fewer impurities, Y-strainers can also have a connector for screen cleaning without disassembling the strainer body.

Industries that use Y-strainers include: 

  • chemical processing
  • food and beverage
  • marine
  • natural gas
  • petroleum
  • pharmaceuticals
  • pipelines
  • power generation
  • water treatment

Y-strainers play a crucial role in safeguarding downstream components across various sectors. Primarily employed in water systems, they effectively filter out gravel, sand, and debris that could obstruct or harm equipment. Thanks to their design, they excel in high-pressure settings like steam applications. Moreover, Y-strainers adeptly manage pressurized air, natural gas, and the elevated temperatures typical in such operations.

Materials for Y-strainers can also differ considerably due to the wide variance in applications and industries in which these strainers are used. For this reason, Y-strainers meant for applications involving steam or natural gas won&#;t be made from carbon steel, which doesn&#;t stand up well under high pressures and temperatures. Instead, Y-screens might be made of Chromoly steel, such as , that can withstand furnaces or natural gas production conditions.

A Comparison: Y-Strainers vs. Inline Strainers

Besides their shape and where they&#;re positioned, other basic deviations exist between Y-strainers and inline strainers. Generally, Y-strainers provide greater flexibility, though they can handle less flow, so should be used for applications that involve straining out fewer contaminants. Inline strainers of the basket variety work better for applications where downtime isn&#;t an issue and materials contain far more contaminants.

Advantages Y-strainers offer include: 

  • Allows for more compact straining.
  • Flexible positioning, allowing for either horizontal or vertical installation.
  • Made generally from stainless steel.
  • Operates well under higher pressures and temperatures.

Advantages of inline strainers include: 

  • Can handle flowrates over 150 gallons per minute.
  • Comes in both simplex and duplex varieties.
  • Enables servicing without interrupting flow.
  • Made from a wide range of materials.
  • Works well for pipelines that handle constant flow.

Y-strainers and inline strainers are commonly used in pipelines. Y-strainers are versatile, suitable for filtering both liquids and gases, whereas inline strainers are more effective at filtering liquids.

Hayes Pump: Your Source for Pump Strainers

Regardless of what inline strainer you&#;re looking for, Hayes Pump has what you need to keep contaminants out of your pumping system. We carry all inline strainers, including duplex, metallic, plastic, simplex, and Y-strainers. To learn more about our inline strainers and other pump system implements, contact the pump experts at Hayes.

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