Ultimate Guide to basket strainer

The mesh size is a crucial element in determining the filtration efficiency of a basket strainer. The right mesh size needs to be selected to effectively filter out undesired debris and will dictate the size of particles that can be removed. Therefore, always opt for a mesh size smaller than the smallest particle you wish to filter out.

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Different industries and applications have varied requirements, which means the suitable basket strainer will also differ. Let’s delve into the factors to consider, starting from the outside.

The initial choice involves selecting the filter housing for the basket strainer. Key considerations include: the positioning of the inlet and outlet, the desired connection type for your filter and application, and the most appropriate sealing material. These external factors are essential.

Moving to the interior of the basket strainer, our focus shifts to the strainer basket itself. Brother Filtration provides both standard top type and slanted top type options for strainer baskets. The slanted top type is specifically designed for simplex basket strainers with inlets and outlets positioned at the same height.

Duplex Strainer: The Comprehensive Guide for Importers

Graphs representing pressure drop and strainer sizing curves are critical tools for designing strainers:

Another term for a strainer is a coarse filter.

In essence, while the words filter and strainer are semantically related, they represent different concepts depending on the design and specifications of the duplex filter.

Before moving forward, it’s valuable to review a brief comparison of the structural differences between filters and strainers.

A strainer body may contain a single basket element or several smaller basket elements installed with precision.

The table below, provided by Hydac, summarizes standard technical specifications for filter housing:

This design philosophy yields a variety of advantages:

Modern technology has prompted many manufacturers to adopt the modular structural design concept, which allows for the utilization of fabricated bodies.

The chambers are equipped with permanent strainers, and the duplex unit can be mounted horizontally or vertically.

Now that you’re better informed about duplex strainers, it’s essential to grasp its structure.

The body plays a pivotal role in the duplex strainer's assembly.

Let’s identify some fundamental structures:

The following units constitute the primary structure of a duplex strainer:

This configuration ensures optimal in-pipeline protection across various sectors, such as chemical, petrochemical, processing plants, and refineries.

Over the years, significant advancements have been made in duplex strainer construction to cater to diverse system or medium requirements.

Thus, selecting a duplex strainer with an improved design structure is wise.

These can include compressors, pumps, valves, and other delicate components.

The primary objective of installing a duplex strainer is to safeguard downstream equipment and accessories.

The functionality of a duplex strainer is straightforward:

Fluid flows until one chamber becomes clogged, at which point the flow reroutes to the standby chamber.

Simultaneously, the clogged chamber undergoes cleaning.

When the second chamber clogs, an alarm may trigger, or you may observe a significant pressure drop.

Essentially, fluid enters the duplex strainer through the inlet.

However, be cautious not to conflate this situation with a pressure drop due to a sudden decrease in fluid flow rate.

When both chambers are clogged, the alarm rings, indicating it’s time to switch and clean the basket strainer.

Indeed, some duplex strainers integrate alarm systems to monitor pressure changes within the chambers.

Typically, a clogging indicator takes the form of a differential pressure gauge.

This device will inform you when to switch to the alternate chamber and clean the clogged one.

This preventive measure helps avoid back pressure or potential bursting of the basket strainer due to excessive inlet pressure.

It is imperative to keep an eye on the basket strainer for high pressure drops so you can address them timely.

When one duplex strainer is active, consider transferring to the next (the standby one).

This ensures continued operations even as the strainer demands cleaning.

During fluid passage through the duplex strainer, contaminants accumulate within the basket.

At this juncture, the basket strainer will contain very few if any contaminants.

Initially, there is minimal pressure drop across the basket strainer.

Once the preset threshold is reached, fluid flow shifts to the other chamber without any interruption in filtration.

The filter chamber remains under pressure, allowing the fluid to move through the basket filter element as designed.

The two duplex strainer chambers feature either pleated or smooth filter elements, guiding fluid from the inner to the outer piping.

The inlet and outlet on the duplex strainer are clearly marked.

Logically, the proper fluid orientation begins at the 'inlet,' flowing peripherally towards the 'outlet.'

Additionally, both inlet and outlet openings should align with the piping flow.

It’s essential to order a duplex strainer with the correct pressure and flow rating compatible with your piping systems.

To illustrate:

Video demonstration reveals that duplex strainers have no moving parts while operating.

The duplex strainer's working principle is indeed elementary.

Let’s explore further by examining the workings of duplex strainers.

This design allows access to maintenance during routine inspections without needing to detach the strainer from the system.

This also mitigates risks associated with suction operations, such as air ingress.

The picture depicts various duplex strainer components, credited to Mueller Steam Specialty:

This advancement helps eliminate potentially hazardous and expensive leaks into the unused chamber during maintenance and cleaning.

The integrated ball-valve mechanism provides an instantaneous shut-off and bubble-tight sealing at the diversion point.

Now, let’s focus on the core topic of this chapter.

This knowledge equips you to make informed purchases when assessing different duplex strainer specifications.

Such information is valuable for both duplex strainer importers and buyers.

In this section, you will learn about the functioning of duplex strainers.

I’ll elaborate on how a duplex strainer operates, allowing a seamless transition between the on-line and standby chambers.

Recognizing when your chambers require cleaning will become straightforward.

In fact, a differential pressure component will assist you in monitoring the operational status of the basket chamber.

When purchasing duplex strainers, ensure they come equipped with differential pressure gauges and electrical switch units.

Additional accessories may be included with duplex strainers.

The basket strainer's material choice is incredibly important; relying solely on décor is inadvisable.

Stainless steel stands as the optimal housing material for duplex strainers, especially in corrosive environments. It is commonly utilized in industries like chemicals, beverages, food, and pharmaceuticals.

Bronze offers superior corrosion resistance and can endure mechanical and thermal shocks more efficiently than iron, although it has limited temperature ranges.

Carbon steel is ideal for high-temperature applications and is particularly preferred in petrochemical and oil sectors.

Iron is a widely-used and economical choice due to its affordability and resistance to corrosion.

Please keep in mind:

Generally, the twin strainers are constructed from any of these materials:

Depending on your application’s specific requirements, different straining elements can be deployed.

These designs ensure that fluids progress from the inside to the outside.

As liquids flow through the basket, solid contaminants are captured within the element.

Sometimes, it’s accompanied by mesh widths and wire-cloth material.

The basket straining element could consist of direct or staggered perforated plates.

Alternative liquid filter media are often competitively priced or available for customization.

Standard screens generally cater to filtration needs involving water, oil, and gas (collectively referred to as WOG).

This component holds significant importance within the duplex strainer.

Moreover, double strainers may feature either flanged or threaded end connections.

This unit comprises dual chambers firmly attached by bolts to the central ball-valve assembly.

A duplex strainer is a straightforward apparatus with opposing inlet and outlet flanges.

Depending on the duplex strainer's design, several key advantages can be guaranteed:

In such systems, when a duplex strainer clogs or encounters issues, simply switch to the alternate chamber.

It’s noteworthy that many systems necessitate an uninterrupted flow:

Below is an illustration of duplex strainers credited to Hayward:

Throughout this process, no flow interferences arise.

This provides operators with ample time to manage cleaning and replacing the duplex filtering cartridge.

The diverter cartridge guarantees excellent sealing between the twin chambers.

Of course, medium flow operates as it does in alternative structures.

This special cartridge functions similarly to the diverter plug.

Notably, duplex strainers may have diverter plugs as well.

By actuating the lever with a single motion, you can execute the changeover mechanism.

Each duplex strainer includes an integral ball-valve or plug mechanism.

So, how does one interchange between operational and standby chambers?

Undoubtedly, you might wonder:

Ultimately, operational shutdowns are negligible during cleaning or maintenance routines.

This ensures continuous use of duplex strainers without halting the overarching system.

When an operational chamber becomes clogged, you can effortlessly transition to the standby one.

As one chamber operates, the other remains dormant.

Notice the following:

In fact, each strainer employs a dual basket filter element configuration.

A duplex strainer operates as a closed system, comprising two separate basket strainer chambers.

By the conclusion of this guide, you will be positioned to import the most appropriate duplex basket strainers.

I'll guide you through every facet, from fundamental definitions and operational principles to installation techniques and technical specifications of duplex basket strainers.

This underscores my commitment to assist you in selecting a suitable duplex strainer.

Shutting down complex systems is often impractical and cost-ineffective.

Indeed, duplex strainers are crucial for maintaining the continuous function of piping systems.

I know you wish to extract debris, dirt, and large particles from oil, water, or fuel without halting operations.

Courtesy of Hayward Filtration

However, this understanding is merely a starting point.

It’s vital to appreciate the relationship between solid particle dimensions and required screen specifications.

Below is a table for strainer mesh sizes, courtesy of Project Materials:

STRAINER MESH AND OPENING SIZE

MESH SIZEPARTICLE DIAMETER, µm

The standard range of mesh screen sizes spans from 20 to 200 mesh.

Keep this in mind.

The mesh size doesn’t always reflect the particle retention ratings of cleanable screens.

The number of wires and their diameter plays a critical role in determining particle size retention.

For critical applications, the selection of a cleanable screen should be tailored for specific particulate retention capabilities.

Here’s a summary of relevant filter elements’ technical specifications, courtesy of Hydac, following industry recommendations:

Type | Connection Size | Materials | Pressure range | Temperature [°C] | Weight [kg] | Volume [l]

Stainless Steel / Carbon Steel Without internal corrosion protection / With internal corrosion protection

PN 16

–10 to 90 / 80 / 20

The volumes shown are for various sizes, notably:

For finer straining mediums, it’s commonplace to reinforce basket perforations with a wire-mesh liner.

This reinforcement is needed because the screen alone may not suffice.

Essentially, the screen filter element performs the actual trapping and collecting of more substantial impurities across any pressured system.

These components are efficiently situated within the strainer bowl.

In industry terms, the opening in the screen is referred to as mesh, while the perforation dimensions through the basket filter media are designated as perforations.

Stainless steel remains the leading choice material.

Next, let’s review the general structure of duplex strainers.

A duplex strainer is fundamentally designed and manufactured with dual-parallel basket strainers, facilitating effective filtering mechanisms.

This design allows for bypassing inline piping during cleaning and routine maintenance.

Duplex Strainer Covers

The cover of a duplex strainer forms an integral component of the assembly and should be accessible for easy cleaning and maintenance.

Types of Strainer Covers

• Bolted Covers

The majority of strainers feature bolted covers. These bolts are designed for easy loosening to easily access the basket inside.

Duplex strainers with bolted covers

Studies suggest that bolt-held covers are the strongest, making them highly recommended for high-pressure systems.

• Clamping Yoke Cover

These covers utilize tee-shaped and threaded handles to secure them to the body of the strainer. Generally, the cover is attached to the vessel via a hinge mechanism for ease of removal.

Duplex strainer with a clamping yoke cover - Photo courtesy: Philips Pump LLC.

This type of duplex strainer is pricier than standard versions.

• Automatic Type

Strainers designed with an automatic feature require no manual cleaning as implied by the name. The basket includes a circular screen that rotates while the water inlet is directed toward the basket.

Such duplex strainers are typically used in large-scale water supply systems, such as those relying on lakes or rivers for process and cooling.

Now, let’s explore various duplex strainer structures.

As discussed in chapter one, we identified a ball-valve and plug system. Four types of duplex strainer structures are differentiated by the medium flow diverter mechanism and size.

Ball Type Duplex Strainer

A ball type duplex strainer efficiently extracts debris and dirt from medium flow while protecting sensitive components. It completely halts fluid flow for cleaning of the filter element.

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The following table presents a size selection for ball-type duplex strainer structures, as referenced by Hydac:

Size | Body & Cartridge Material | Connection | Seat/Seal | Diverter Balls | Rating Standard (Metric)

Iron | Threaded | TFE/Buna N* | Stainless Steel | 125# ANSI 200 PSIG @ 150F (PN16 13.8 bar @66C)

The design typically incorporates a unique ball-valve cartridge flow diverter to isolate the two basket chambers and to prevent medium overflow.

This system is activated by using a handle to divert the flow direction into the other available basket chamber.

Due to the handle requiring low operational torque, it can be easily turned with minimal human effort.

A glance at the sketch of technical details for a ball-type duplex strainer, credited to Hayward Filtration:

Duplex Strainer Sample Technical Schematic

Whenever the strainer basket necessitates cleaning, simply turn the lever-handle to free the used chamber.

The lever's position indicates which chamber is in service.

Plug Type Duplex Strainer

This design of the duplex strainer features an economical, simple, and trouble-free framework fitted with a pressure-rated plug valve for the straining chambers.

The image below illustrates the internal section of a plug-type duplex strainer, courtesy of Hayward:

Duplex Strainer Sections

Similar to the ball-type duplex strainer, a lever-handle is employed to achieve medium changeover by manually rotating it through a 90-degree arc.

The table provides the duplex strainer selection chart from Hayward Filtration:

Size | Body Material | Plug Material | End Connections | Seals | Rating

5”, 6”, 8” | Iron | Iron or Bronze | Flanged 125# | Buna N | 200psi @ 100F | 5” and 6” sizes

150 psi @ 100F for 8” size | Bronze | Carbon Steel | Bronze or Stainless Steel | Flanged 150# | 6” and 8” | Stainless Steel | Stainless | Flanged 150# |

This duplex strainer structural design prevents operational interference by incorporating a special plug port within the diverter mechanism plug.

The entire medium flow diversion takes roughly 30 seconds.

A technical sketch of duplex strainer details, credited to Hayward:

Duplex Strainer Technical Drawing Sample

The integral stop automatically positions the plug precisely each time at the intended location.

When operated, duplex strainers feature an in-built lifting jack that lifts the diverter plug from its port when the lever-handle is operated.

Once the diversion takes place, the same lifting jack is utilized to reposition the plug.

This jack is optimized for performance under extreme pressure conditions.

Let’s proceed with duplex strainers categorized by size:

Large Duplex Strainers

As the size of the duplex strainer increases, ball or plug type diverter designs may become impractical.

In such cases, using sliding-gate valve arrangements to change the direction of fluid flow may be advantageous.

The table outlines various sizes of large duplex strainers from which you can select, credited to Hayward Filtration:

Size | Material | End Connection | Seals | Pressure Rating

10” to 12” | Iron | Flanged 125# | Buna N | 200 psi @ 100F | Bronze | Flanged 150#

14” to 18” | Iron | Flanged 125# | 150 psi @ 100F | Bronze | Flanged 150#

The valves-discs operate accurately and are precisely actuated by hand-wheels that work inversely.

When one basket housing opens to fluid flow, the opposing basket chamber is entirely seal off.

Refer to the technical sketch for a large duplex strainer:

Large Duplex Strainer Technical Drawing

You may encounter other large duplex strainers that utilize synchronized butterfly valves to adjust the medium flow course.

Do you have any inquiries regarding duplex strainer structure and design? Feel free to leave a comment below.

Meanwhile, let’s investigate another crucial aspect of duplex strainers.

Chapter 4: Duplex Filter Element Working Principle

In the previous chapter, we learned about duplex strainers’ operation, and now we will delve into the working principle of duplex filter elements.

Recognizing the subtle distinctions between duplex strainers and duplex filtering cartridges is crucial, even if they serve similar functions.

Filter Basket

The duplex filter assembly is built to guarantee a clean supply of filtered medium in an oil filtration setup under pressure.

Moreover, a robust duplex filter element design should facilitate prolonged oil purification mechanisms before needing replacement.

An ideal duplex filter should enable overhaul of filter media during operation, with redundancy provided by the dual filter elements in the assembly.

Additionally, the duplex filter element’s surface plays a vital role in determining differential pressure and is equipped with an electrical switch to alert an obstructed filter.

The duplex filter element consists of numerous housings containing a pair of 3 µm filters, a check valve, and a differential pressure switch system.

For offshore applications, a compact design is vital to ensure smooth operations along with backup options in a single duplex unit.

In practice, a duplex strainer utilizes one filter chamber while leaving the other in standby.

The lever-handle controls the choice of which filter and chamber is active.

Duplex filter technical data

Before deploying a duplex filter element, ensure it is filled and vented. Also, verify the flow direction as indicated on the filter element.

This practice guarantees the medium enters the duplex filter element from the top.

Keep in mind:

Cylindrical elements are highly effective for filtering coarse solid particulates.

As the oil purification systems filter gallons of fluid, the filter media captures and removes contaminants from the medium stream.

Eventually, it will clog or become contaminated, causing a spike in pressure differential between the duplex strainer input and output flow.

As this differential pressure increases throughout the filter system, once a predetermined limit is reached, pressure switches engage as contacts close.

The dirty filtering cartridge can then be removed, cleaned, or replaced.

The chamber remains on standby for use once one becomes clogged.

Installing two duplex filter element chambers ensures uninterrupted operations, even during maintenance of the duplex filter assembly.

To accomplish low pressure loss, the medium should follow a streamlined flow path, experiencing minimal diversion in directional flow.

A high surface area provided by pleated screens allows for more effective filtration.

You may introduce it along the medium flow path.

Chapter 5: Steps for Cleaning Duplex Strainer

In this chapter, I will guide you on how to clean a duplex strainer, a vital maintenance procedure.

As is typical, the duplex strainer will accumulate solids and particles over time.

As previously stated, this accumulation leads to an increase in pressure difference.

Moreover, it diminishes the duplex strainer's operational efficiency.

During this phase, dirt will also gather within the filtering zone.

The positive aspect about duplex strainers is that system shutdowns are unnecessary during cleaning.

Here’s what you should do:

i. Ensure that you are wearing all necessary safety gear, such as overalls, gloves, goggles, etc. This will safeguard you against potential injuries.

ii. Check both the pressure and temperature of the duplex strainer system. Additionally, confirm that the medium within the duplex strainer is neither hazardous nor poses any risks.

iii. First, identify which chamber needs cleaning. You can locate it using the lever handle's position. Turn the plug handle toward the alternate standby chamber.

Changeover lever handle

iv. Ensure that the handle locks into place securely; this will protect against leaks if a tight shut-off isn’t immediately accomplished. Carefully undo the drain plug in that chamber to relieve pressure before fully accessing it.

Position of the drain plugs

v. Remove the cover nuts to lift out the cleanable screen to expel any sediment or dirt stuck in the screen's perforations.

Nuts holding the duplex strainer housing

vi. Thoroughly clean and flush the chamber using pressured water, but be cautious against deliberately contaminating the basket chamber screen in the process. The bottom section remains the clean part of the duplex strainer.

vii. Replace the washer and drain plug. Additionally, inspect the O-ring for wear and replace if necessary.

viii. Reinsert the screen back into the strainer’s chamber, ensuring that its handle is raised above the strainer body.

ix. Confirm that the cover fits on the handle properly before connecting with the strainer housing. Replace and tighten the cover and nuts accordingly.

x. Restore the plug to its initial position to prevent O-ring damage. Slightly manipulate the lever-handle to allow for partial fluid flow into the cleaned bowl to purge air and ensure accurate reseating of the bleed screw.

xi. Once complete, execute a full turn of the handle to recommence straining on the cleaned chamber.

xii. Alternatively, a balance valve permits operation exclusively for venting the chamber after reinstallation of the top cover. Close the valve once the operation concludes, and the cleaned chamber is prepared for use.

xiii. The aforementioned process should be employed for the other chamber once it clogs.

It’s advisable to begin cleaning screens when the differential pressure reaches 20 psi as they quickly clog, yielding a rapid rise in pressure drops.

Caution: Avoid exceeding the threshold differential pressure to prevent screen collapse.

Chapter 6: Duplex Basket Filter Element Changeover Process

While earlier chapters emphasized the ability of duplex strainers to operate continuously without interruption, this doesn’t negate the fact that basket filter elements may wear out or require maintenance.

Step 1: Monitor the Clogging Indicator for Potential Changeover

Indeed, basket filter elements have limited service lives, prompting eventual replacement.

Normally, pressure gauges surround the filter basket to ascertain the strainer’s contamination capacity.

Once the clogging indicator triggers an alert, it’s prudent to promptly execute the basket filter element changeover procedures.

Generally, duplex strainer basket filter elements lacking contaminant indicators should be changed biannually.

Conversely, those with contamination indicators should be replaced once yearly.

Clogging indicator

If the strainer's contaminant indicator fails to ever signal a need for basket filter element replacement, it may suggest a malfunction of the bypass valve.

Operators should maintain vigilance to avoid the use of worn-out filter elements.

Step 2: Release Pressure and Alter Flow

Before attempting to remove the basket filter element, it’s crucial to relieve the pressure within the strainer and ensure that the specific unit has cooled down.

This precautionary measure is vital for safety.

The isolation valves on the strainer facilitate the cutting off of pressure supply from the source.

This containment prevents potential injury and avoids flood risks when extracting the strainer plug.

Balance valve

During this phase, flow is adjusted slowly into the alternate standby basket via the equalizing valve.

Before rushing to open up the strainer, make sure to inspect for leaks; if absent, proceed to the next step.

Alas, if leakage is discovered, shut off the equalizing valve, vent, and drain the basket filter element chamber.

Remove the cover from the basket chamber and address any leakage before reassembling the unit.

Step 3: Extract the Old Basket from the Housing and Install a New One

Once fluid drains below the basket filter element’s top, close the drain valve and proceed with removing the basket.

Hold the basket filter element elevated over the chamber to allow proper dripping.

Remove old basket from the housing

Once removed, take your time unpacking the new basket filter element, disposing of all packaging materials and reinstalling the basket into the same position.

If the basket filter element is constructed from stainless metal, complete replacement is imperative.

Additionally, check the strainer cover seal and replace it if damaged.

Step 4: Reassemble the Duplex Strainer Unit

Put the unit back together and secure the basket chamber cover.

To confirm the strainer’s chamber remains leak-free, open the equalizing valve to allow the fluid to flow through the vent valve.

Take time to assess for any leaks, and if none exist, close the vent valve.

Parts of a duplex strainer

Any leakage present around the strainer housing often stems from improperly tightened bolts, cover knobs, damaged or contaminated cover seals, drain plugs, or vent plugs.

Ensure that the threads of the drain and vent plugs are smooth and clean during the reinstallation process.

When using thread sealants, they should be compatible with the fluid line medium.

Once the newly fitted basket filter element and cleaned housing are ready, changeover operations can commence.

Chapter 7: Applications of Duplex Strainers in Piping Systems

Duplex strainers find usage across numerous industries.

As previously noted, they serve to protect downstream components.

These components may include relief valves, pressure-reducing valves, and more, which must remain clean.

Utilizing duplex strainers significantly enhances service longevity.

Moreover, they contribute to improved occupational health, occupational safety, and environmental protection.

They play a key role in oil purification systems.

Several primary applications for duplex strainers include:

7.1 Duplex Strainers in Power Generation

For optimal performance from fossil power generation engines, their fuel-gas combustion chambers must receive clean, dry gas supplies.

Insufficient pre-filtration may allow aerosols and solid particulates to enter the combustion chambers directly.

The resulting abrasion and wear can lead to costly repairs and maintenance.

Hydropower Generation Plant

For this reason, duplex strainers are indispensable in both refining fuel and safeguarding machines, as well as ensuring clean water flow for cooling.

They are equally necessary for straining transformer oil to mitigate system clogging.

7.2 The Petrochemical Sector

Turbo machinery, complex pieces of equipment, are extensively utilized in the petrochemical field.

These systems are fitted with dry-gas seals that are exceedingly sensitive to particulates such as aerosols, condensates, and solid particles.

Section of Turbo Machinery

The shaft movement produces exceedingly slight openings, nearly 3 µm on the seal, which allows the seal gas to circulate. Protecting these seals extends their lifespan, requiring that the seal gases undergo proper straining.

7.3 The Petroleum Domain

Just like in power generation, duplex strainers prove useful within petroleum pipelines as well.

They excel at removing and cleaning unwanted impurities from gasoline and crude oil.

Fuel oil may occasionally include impurities such as gums and tars, obstructing fuel burner nozzles.

Consequently, duplex strainers are installed in every oil burner to filter out these undesirable materials.

Section of a Pipeline

Similar applications occur at refineries and within oil pipelines to safeguard meters and pumps from unwelcomed debris.

7.4 Duplex Strainers Used in Marine and Offshore Drilling

For ship engines and subsystems to function effectively, clean and dry fuel and gas are crucial.

Thus, duplex strainers hold significant value in purifying water extracted from oceans or seas to prevent abrasive wear on system components.

Marine Applications

In offshore oil and gas drilling, duplex strainers are recommended for enhancing the mining process’s efficiency.

7.5 The Chemical Manufacturing Sector

The chemical industry stands as the largest user of duplex strainers across their pipelines.

Indeed, operations within chemical pipelines cannot be optimized without the integration of duplex strainers.

Chemical Manufacturing Plant

In diverse areas, duplex strainers are vital for protecting equipment, producing cleaner products, and facilitating the separation of unwanted solid particles from liquids.

7.6 Water Treatment Facilities

Similar to the chemical sector, water pipelines also benefit significantly from duplex strainers.

They are essential for removing gravel, sand, and debris from sources like wells, lakes, and streams.

Additionally, they capture birds’ feathers, insects, and leaves to block their entry into cooling towers exposed to the environment.

Duplex strainers further filter out hairs and lint from large swimming pools before allowing water to flow through.

They also play a critical role in desalination equipment by filtering unwanted solids prior to the salt removal process.

Water Treatment Plant

Moreover, industrial park sewer pipelines include strainers to extract solid materials that can collect and eventually obstruct waterways.

7.7 Pharmaceuticals and Cosmetic Industries

Numerous products within the cosmetic and pharmaceutical realms may contain undissolved or undispersed particles, passing through pipeline strainers.

These strainers effectively eliminate such undesirable substances that would otherwise ruin the products.

7.8 The Paper and Pulp Sector

To meet market demand for smooth paper finishes, the issue of unseen clumps within coatings must be addressed.

Paper Pulp Industry

As such, paper and pulp strainers capture these hidden lumps and clean paper traces from wastewater effluents during discharge.

7.9 Process Plants

In many scenarios, process systems represent substantial financial investments, necessitating robust protective measures during operation.

This minimizes damage from residues, dirt, and scale, consistently averting costly downtime through the installment of pipeline duplex strainers.

Typically, duplex strainers are positioned before condensers, heat exchangers, and pumps to avert clogs in nozzles and flow meters.

7.10 Food Industry

In this sector, pipeline duplex strainers remove skins, pulp, and foreign substances from blended fruit juices. They are even employed to sift lumps from honey and chocolate syrup.

While not all applications can be detailed here, duplex strainers remain vital in any pipeline where continuous operation is critical.

Conclusion

This guide underscores the integral role duplex strainers play across numerous industries.

I trust the information provided herein will aid you in identifying efficient and reliable duplex strainers.

Numerous aspects warrant consideration, including material type, design, and the capacity to filter water, oil, or other fluids.

Feel free to reach out with any inquiries regarding duplex strainers.

We are committed to helping you, offering free consultations concerning duplex strainers and various filtration systems.

Contact us to discuss your requirements for Water treatment basket strainer China. Our knowledgeable sales team is ready to help identify the best options regarding your specific requirements.

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