Pressure Screen vs Vibrating Screen: Which Works Better?

A pressure screen usually works better when a paper mill needs continuous, high-capacity, enclosed, and relatively precise pulp screening. A vibrating screen is often more suitable for simpler coarse screening, reject handling, or lower-capacity applications where low equipment complexity and lower installed power are important. The two machines therefore should not be treated as direct substitutes.

The correct choice depends on screening position, pulp consistency, production capacity, contaminant size, required accepts quality, available space, energy consumption, and maintenance strategy. In many mills, both machines can appear in the same stock-preparation system because they solve different screening problems. Sun Hong Group supplies both technologies through its Pulp Screening Equipment range for virgin pulp, recycled fiber, straw pulp, chemical pulp, and other papermaking furnishes.

What Is the Main Difference Between a Pressure Screen and Vibrating Screen?

The main difference is the way pulp passes through the screening surface.

A pressure screen operates as an enclosed pressurized system. Stock enters the screen housing under pressure and acceptable fibers pass through holes or slots in a cylindrical screen basket. A rotating rotor or foil system creates pressure fluctuations close to the basket surface, helping keep the apertures open and reducing fiber mat formation. Reject material that cannot pass through the basket remains on the feed side and is discharged separately.

A vibrating screen generally uses a relatively simple flat or inclined screening surface. The screen frame vibrates continuously, causing stock and coarse contaminants to move across the screen plate. Acceptable pulp passes through the holes or slots while oversized material moves toward the reject end. Spray water can be used to wash useful fiber from the rejects and keep the screen surface cleaner.

This difference in operating principle affects almost every other comparison.

The better machine is therefore the one matched to the required screening task rather than the one with the lower purchase price or larger motor.

How Does a Pressure Screen Work?

In a modern pressure screen, pulp enters a closed housing and flows around a cylindrical basket. The pressure difference between the feed side and accepts side drives usable fiber and liquid through the basket openings. Contaminants that are too large or have unsuitable shape remain outside the apertures and move toward the reject outlet.

The rotor is critical to this process. As the rotor foils pass close to the screen surface, they generate alternating hydraulic pulses. One part of the pulse promotes fiber passage, while the following negative-pressure effect helps clean fibers away from the basket surface. Without this self-cleaning action, narrow slots can become covered by fiber mats and lose capacity quickly.

Sun Hong's Paper Pulp Screening Equipment Inflow Pressure Screen uses an inflow configuration in which stock enters around the outside of the screen basket and accepts pass toward the inside. The range is designed for low-consistency screening and includes configurations for wood pulp, straw pulp, and waste-paper pulp. Because the system is enclosed and designed for relatively low pulsation, it can be used close to the paper machine where stable flow is important.

Pressure screens can use drilled-hole baskets or slotted baskets depending on the contaminant-removal target. Hole screens are often associated with coarser separation, while narrow slots can provide more precise separation of shives, plastics, stickies, and other undesirable material according to their size and shape.

How Does a Vibrating Screen Work?

A vibrating screen uses mechanical movement rather than a high-speed internal rotor to maintain the screening process. Pulp enters the screen box and moves across a perforated or slotted plate while the entire screen frame vibrates. Smaller fibers and liquid pass through the openings into the accepts collection area, while coarse contaminants remain on the screen and gradually travel toward the reject discharge.

Sun Hong's Paper Pulp Coarse Screen Vibrating Screen consists mainly of an inlet box, vibrating screen frame, shock absorbers, pulp tank, spray pipe, and drive unit. The product can use perforated or slotted screen plates according to furnish and process requirements. The screen area ranges from approximately 1 to 4 m², with motor power from 2.2 to 5.5 kW across the current model range.

The design is mechanically simpler than a pressure screen because it does not require a cylindrical basket with a close-clearance rotor. That simplicity can reduce investment, motor power, and certain maintenance requirements. However, its capacity and screening precision are generally lower, particularly when narrow apertures or high-throughput continuous screening are required.

Vibrating screens are therefore commonly more suitable for coarse screening, reject recovery, or process stages where the mill wants a robust and relatively simple machine rather than high-precision pressure screening.

Which Screen Provides Better Screening Accuracy?

For fine pulp screening, a pressure screen generally provides better control.

The enclosed design allows the process to maintain a controlled pressure differential across the basket. Narrow slotted baskets can be manufactured with precise opening dimensions, while the rotor continuously disrupts fiber mats that would otherwise block those fine apertures. This makes pressure screening suitable when the mill needs to remove small shives, fiber bundles, plastics, stickies, and other contaminants before sensitive downstream equipment.

Vibrating screens can also use slotted plates, but very fine screening becomes more difficult because the screen relies on mechanical vibration and surface washing rather than close-clearance rotor pulses. Narrow openings reduce throughput and increase the risk of fibers accumulating on the screen surface.

The practical difference is important near the paper machine. Contaminants that pass through stock preparation can eventually reach the headbox and forming section, where they may contribute to sheet defects, deposits, nozzle blockage, and contamination of paper machine clothing. Fine pressure screening is therefore more valuable when product quality requirements are high.

A vibrating screen is not inferior simply because its separation is coarser. It is performing a different function. Removing large contaminants before fine screening protects downstream equipment and prevents the more expensive pressure-screen basket from being overloaded with material that should have been removed earlier.

Which Screen Handles More Production Capacity?

Pressure screens generally offer substantially higher capacity per unit of equipment.

Sun Hong's vibrating screen range currently lists hole-screen capacities from approximately 7.5 to 100 T/D, while slot configurations range from about 3.5 to 30 T/D depending on screen area. The Inflow Pressure Screen range extends much further, with hole-screen models reaching several hundred tonnes per day and larger units designed for substantially higher continuous throughput.

The reason is not simply motor power. A cylindrical basket provides a large active screening area within a compact housing, while continuous rotor action keeps more of that area available for fiber passage. Pressure differential also provides a consistent driving force through the basket.

A vibrating screen with a larger flat screening area can process more stock, but increasing capacity usually requires a larger frame and greater floor area. At some point, using several large vibrating screens becomes less practical than one appropriately sized pressure screen.

For a small stock-preparation line, this difference may not matter. For a high-speed paper machine consuming hundreds of tonnes of pulp per day, capacity becomes a decisive advantage for pressure screening.

Pressure Screen vs Vibrating Screen for Different Pulp Consistencies

Pulp consistency affects hydraulic behavior, screen loading, fiber mat formation, and required machine size. Neither pressure nor vibrating screens should be selected without knowing the inlet consistency.

Sun Hong's vibrating-screen specifications distinguish between perforated and slotted operation. Current models are designed around approximately 1–1.5% consistency for hole screening and approximately 0.5–0.8% for slotted screening. Pressure-screen operating ranges vary by design. Low-consistency inflow screens are intended for relatively dilute stock, while middle-consistency pressure screens can process significantly higher consistency.

Higher consistency is important because reducing dilution water can decrease the amount of water that must be pumped through the stock-preparation system. However, screening higher-consistency pulp is more demanding because fibers interact more strongly and are more likely to form flocs.

The correct machine therefore depends on both dry production and volumetric flow. A mill producing the same tonnes of paper per day can require very different screening equipment at 0.8% consistency compared with 3% consistency.

Which Screen Is Better for Recycled Paper Mills?

Recycled-paper mills often need multiple screening stages rather than one machine.

OCC and mixed recovered paper can contain plastics, adhesive material, tape, staples, sand, fiber bundles, hot-melt contaminants, and other debris. Attempting to remove all of these contaminants in one fine pressure screen can create excessive basket loading, wear, plugging, and reject fiber loss.

A more practical stock-preparation sequence can use coarse separation first, followed by progressively finer screening. A vibrating screen can be useful where larger rejects need to be removed or where useful fibers need to be recovered from coarse reject streams. A pressure screen can then perform more precise separation before stock reaches later preparation stages or the paper machine.

This staged approach is also consistent with the wider Sun Hong stock-preparation system, where hydrapulpers, trommel screens, cleaners, fiber separators, vibrating screens, pressure screens, thickeners, and refiners perform different functions rather than competing for the same process position.

For recycled-fiber mills, the question should therefore usually be:

“Where should the pressure screen and vibrating screen be positioned?”

rather than:

“Which one should replace the other?”

Which Screen Is Better Before the Paper Machine?

A pressure screen is generally the better choice for screening close to the paper machine.

Approach-flow stock needs to be clean and stable before entering the headbox. High-speed paper machines are sensitive not only to contaminants but also to hydraulic pulsation because stock-flow variations can influence basis-weight uniformity and sheet formation.

An inflow pressure screen can provide controlled fine screening within a closed system while using rotor geometry and outlet design to reduce undesirable pulsation. The basket can use relatively fine slots when the process requires more precise contaminant removal.

A vibrating screen is usually less suitable for this position because its open vibrating operating principle is designed primarily around physical separation rather than stable approach-flow hydraulics.

The quality of screening at this stage can influence downstream conditions. Clean stock reduces the amount of contaminant material reaching forming fabrics and other paper machine clothing. The forming fabric cleaner still has an important job removing fibers, fillers, pitch, and deposits from the fabric, but it should not be expected to compensate for inadequate stock screening upstream.

Good paper-machine operation therefore depends on both stock cleanliness and effective clothing cleaning.

Which Screen Uses Less Power?

A vibrating screen normally has much lower installed motor power than a pressure screen of industrial production scale. Sun Hong's current vibrating-screen range uses motors from approximately 2.2 to 5.5 kW, while larger pressure screens may require tens or even hundreds of kilowatts.

However, motor nameplate power does not provide a fair efficiency comparison because the machines do not process the same capacity or perform the same screening duty.

The better metric is closer to:

Energy Consumption per Tonne of Acceptable Pulp

If one pressure screen processes several hundred tonnes per day while a vibrating screen handles a fraction of that output, directly comparing 75 kW with 5.5 kW gives little useful information.

Fine screening itself also requires more energy than basic coarse separation because narrow apertures create greater hydraulic resistance and the rotor must maintain basket cleanliness. A mill should therefore evaluate energy relative to the required contaminant removal and production rate.

The lowest-power machine is not necessarily the lowest-cost machine if it requires several parallel units, larger floor space, additional pumping, or cannot provide the required pulp quality.

Which Screen Has Lower Maintenance Requirements?

Vibrating screens have a simpler internal structure, which can make routine maintenance relatively straightforward. Typical maintenance points include the screen plate, bearings, motor, coupling, damping system, and spray-water system. The vibration mechanism itself needs regular inspection because worn bearings or damaged damping elements can increase noise and unstable movement.

Pressure screens have more precision components. Maintenance commonly focuses on:

• Screen basket condition

• Rotor or foil wear

• Rotor-to-basket clearance

• Bearings

• Mechanical seals

• Lubrication

• Drive system

• Pressure instrumentation

• Seal-water system

The basket and rotor are particularly important because gradual wear can change both capacity and separation performance. Enlarged slots or damaged basket surfaces can allow contaminants into the accepts stream even if the screen continues operating.

Sun Hong groups these critical replacement components within its Screen Baskets & Rotors product category. When purchasing a pressure screen, mills should evaluate basket and rotor replacement cost and delivery time together with the main machine.

Maintenance cost therefore depends on operating duty. A vibrating screen may be mechanically simpler, but a mill should not choose it solely to reduce maintenance if doing so creates poor screening quality or insufficient capacity.

Which Screen Occupies Less Space?

For equivalent high production capacity, a pressure screen generally provides a more compact solution.

The cylindrical screen basket creates a large active screening surface inside a relatively small housing. A vibrating screen needs a wider or longer flat screening deck as capacity increases. Multiple vibrating screens may also be required to equal the output of one larger pressure screen.

Floor-space differences become increasingly important in existing paper mills where stock-preparation areas are already crowded with tanks, pumps, cleaners, refiners, pipes, and access platforms.

However, pressure screens also need sufficient service clearance for basket and rotor removal. A machine may occupy limited operating floor space but still require overhead or side clearance for maintenance.

Plant layout should therefore evaluate both operating footprint and maintenance-access envelope.

Which Screen Produces More Reject Fiber Loss?

Reject fiber loss depends more on process control than machine name alone.

Any screening machine must discharge contaminants, and some useful fiber inevitably follows the reject stream. The objective is to remove enough contaminants without throwing away excessive good fiber.

A vibrating screen commonly uses spray water to recover fiber from coarse reject material as it moves toward the discharge end. Pressure-screen reject flow can be controlled through valves, cascade arrangements, dilution, and secondary screening stages.

Reject rate that is too high wastes valuable fiber. Reject rate that is too low can concentrate contaminants inside the machine, increase plugging, or allow unacceptable material into the accepts.

For recovered-paper mills, secondary or tertiary screening of rejects can improve fiber recovery. This is another reason screening systems often contain several machines rather than relying on one single-stage screen.

The correct economic comparison should include fiber yield because a small percentage of unnecessary fiber loss multiplied across hundreds of tonnes per day can exceed differences in machine purchase price.

How Do Screen Plates and Baskets Affect Performance?

Both machines depend on the quality of their screening surface, but the components are constructed differently.

A vibrating screen generally uses a flat perforated or slotted screen plate. Aperture size controls the maximum size of material that can pass through the deck, while vibration and spray water maintain movement across the surface.

A pressure screen uses a cylindrical basket that may have drilled holes, machined slots, or wedge-wire profiles. Narrow slotted baskets can provide high screening precision, but manufacturing tolerance becomes critical. If slot width varies around the basket, contaminant removal and hydraulic loading become inconsistent.

The pressure-screen basket must also interact correctly with the rotor. Basket geometry, rotor profile, clearance, rotational speed, pulp consistency, and pressure differential form one screening system. Replacing only the basket with an unsuitable design can reduce capacity even if the nominal slot width appears correct.

For this reason, screen-surface quality is one of the major factors separating low-cost screening equipment from well-engineered equipment.

How Does Each Screen Handle Plugging?

Plugging occurs when fibers and contaminants cover or block screening apertures.

Pressure screens control this problem with rotor-induced hydraulic pulses. As the rotor passes the basket, it generates changes in pressure that help remove fiber accumulation from the aperture surface. This allows narrow slots to operate continuously under suitable process conditions.

Vibrating screens rely on mechanical movement and spray washing. The vibrating deck prevents material from remaining stationary, while water curtains help wash fiber through the screen and move rejects toward discharge.

Neither method eliminates plugging completely. Incorrect pulp consistency, unsuitable apertures, excessive contaminant load, insufficient reject flow, or worn components can still create problems.

If a pressure screen plugs frequently, the mill should check basket aperture, rotor condition, clearance, differential pressure, consistency, flow, and reject setting. If a vibrating screen loses capacity, the screen plate, spray system, feed distribution, vibration amplitude, and contamination level should be inspected.

Simply increasing motor load or water flow without diagnosing the cause can reduce efficiency without solving the underlying problem.

Pressure Screen vs Vibrating Screen: Cost Comparison

A vibrating screen normally has a lower initial equipment cost because its structure is simpler. A pressure screen contains a pressure-rated housing, cylindrical basket, precision rotor, shaft system, bearings, seals, larger motor, and more process instrumentation.

However, purchase price is only one part of the cost comparison.

The correct financial comparison should therefore use total process cost rather than machine price.

For example, replacing a required pressure screen with a cheaper vibrating screen may save capital initially but create poor accepts quality, reduced throughput, additional floor-space requirements, or higher downstream contamination. Conversely, installing an expensive pressure screen where a simple vibrating screen can perform the coarse-separation duty may be unnecessary capital expenditure.

When Should a Paper Mill Choose a Pressure Screen?

A pressure screen is usually the stronger option when the mill requires:

• Continuous screening at medium or high production capacity

• Fine contaminant removal

• Enclosed stock handling

• Controlled process pressure

• Compact equipment footprint

• Screening near the paper machine

• Lower hydraulic pulsation

• Narrow slotted screening

• Automated process monitoring

• High-speed paper-machine operation

It is particularly valuable in positions where poor accepts quality can directly affect sheet quality or paper-machine efficiency.

Fine pressure screening becomes more important as machine speed and paper-quality requirements increase because downstream equipment has less tolerance for contaminants and unstable stock flow.

When Should a Paper Mill Choose a Vibrating Screen?

A vibrating screen can be a better choice when the mill needs:

• Coarse screening

• Lower production capacity

• Reject fiber recovery

• Simple equipment structure

• Low installed motor power

• Easy visual inspection

• Lower capital investment

• A supplementary screening stage

Its simplicity makes it practical for mills where the required screening duty does not justify a more complex pressure screen.

For example, a vibrating screen can remove larger pieces of plastics, fiber bundles, and coarse contaminants before stock moves into later treatment. It can also be used to recover usable fibers from reject streams rather than sending all reject material directly to disposal.

The key is not to ask a vibrating screen to perform fine-screening work beyond the capability of its aperture size, surface area, and operating principle.

Can a Mill Use Both Pressure and Vibrating Screens?

Yes, and this is often the better solution.

Pulp screening normally works best as a sequence of increasingly precise separation stages. Large contaminants should be removed early so that downstream equipment can focus on smaller and more difficult contaminants.

A simplified recovered-paper screening sequence may look like:

Hydrapulper → Coarse Separation → Vibrating Screen / Reject Screening → Cleaner → Pressure Screen → Fine Screening → Paper Machine

The exact sequence varies according to furnish and mill design, but the principle is important: each machine should remove the contaminants it handles most effectively.

Using a vibrating screen upstream can reduce the coarse contaminant load reaching the pressure screen. This protects the basket and rotor and can improve stable capacity. Using a pressure screen later provides the finer separation that the vibrating screen cannot efficiently achieve.

This staged design usually provides better process economics than overspecifying one machine to perform every screening function.

How Does Screening Affect Paper Machine Clothing?

Stock screening takes place well before the sheet is formed, but its performance affects the forming section directly.

When contaminants, stickies, plastics, or fiber bundles remain in the stock, they can reach the headbox and deposit on forming fabrics. This may reduce drainage, create local plugging, disturb sheet formation, and increase cleaning demand.

The forming fabric cleaner performs the downstream job of removing deposits from the fabric surface and openings during operation. It is important for maintaining water permeability and fabric cleanliness, but it cannot replace proper stock screening. The best approach is to prevent as much contamination as practical before the pulp reaches the paper machine and then maintain clothing cleanliness during operation.

The same principle applies to an air bellow used for felt or wire guiding. It helps maintain stable clothing position, but it cannot correct pulp-quality problems caused by inadequate stock preparation.

Pressure screens, vibrating screens, clothing cleaners, guiding systems, and paper machine clothing therefore perform different but connected roles in maintaining paper-machine runnability.

How Should Mills Compare Pressure and Vibrating Screen Quotations?

A mill should first confirm that the suppliers are quoting equipment for the same process duty. Comparing machine prices without aligning process requirements leads to misleading results.

Use a comparison table such as:

If the two machines are being quoted for completely different screening duties, comparing only the total price provides little useful information.

Common Selection Mistakes

One of the most common mistakes is assuming that a lower-cost vibrating screen can replace a fine pressure screen because both machines remove contaminants. Their separation mechanisms, throughput, and process roles are different.

Another mistake is assuming a pressure screen is automatically superior and should replace every screen in the stock-preparation system. Using an expensive pressure screen for a simple coarse-reject duty can increase capital and maintenance costs without creating a meaningful quality benefit.

Other common mistakes include selecting by motor power, ignoring inlet consistency, choosing the smallest possible slot, overlooking reject fiber loss, and failing to consider replacement baskets or screen plates.

Mills should also avoid evaluating screening independently from the rest of the process. Cleaner performance, pumping, pulp consistency, furnish quality, storage chests, and downstream paper-machine requirements all influence the correct screen choice.

How to Choose Between a Pressure Screen and Vibrating Screen

The decision can be simplified by starting with five questions.

First, what needs to be removed? Large contaminants favor coarse screening, while small shives and stickies require finer separation.

Second, how much pulp must be processed? High production rates generally favor pressure screening because it provides more capacity in a compact footprint.

Third, where is the screen installed? Approach-flow and other critical fine-screen positions normally favor pressure screens, while coarse stock-preparation and reject duties may favor vibrating equipment.

Fourth, what accepts quality is required? Higher paper grades and high-speed machines typically place greater demands on screening precision.

Fifth, what is the lifetime cost? Consider power, spare parts, fiber loss, maintenance, floor space, downtime, and downstream contamination—not just equipment price.

The result can be summarized as:

Choose a pressure screen for precision, capacity, enclosed continuous operation, and critical downstream screening. Choose a vibrating screen for simpler coarse separation, lower-capacity duties, and reject recovery. Use both when the stock-preparation system benefits from staged screening.

Why Choose Sun Hong Group?

Sun Hong Group was established in 2010 in Xuzhou, Jiangsu Province and supplies equipment and spare parts for pulp and paper production. The company's early manufacturing focus included forming fabric, press felt, and dryer fabric, after which its product range expanded into stock-preparation machines, screen baskets, rotors, cleaners, spray nozzles, doctor blades, rolls, rotary joints, dewatering components, and other paper-machine parts.

This broader product structure is useful for screening projects because pressure screens and vibrating screens do not operate independently from the rest of the mill. Furnish quality, pulp consistency, cleaners, downstream machine conditions, and clothing contamination all influence the correct screening strategy.

Sun Hong can provide both pressure and vibrating screening equipment as well as baskets, rotors, and related stock-preparation components. Mills can provide existing machine information for replacement projects or process conditions for new equipment selection.

For more accurate equipment selection, provide the furnish, screening stage, required production capacity, pulp consistency, contaminant profile, target aperture, available installation space, motor voltage, and required automation. These parameters allow the machine to be selected according to the actual process rather than simply choosing the lower-priced screen.

Conclusion

A pressure screen and vibrating screen serve different functions in pulp and paper production.

Pressure screens provide enclosed, continuous screening with higher capacity and greater potential for fine contaminant removal. Their cylindrical baskets and rotor-generated pulses allow relatively narrow holes or slots to operate continuously, making them particularly suitable for fine screening and paper-machine approach-flow applications.

Vibrating screens use a simpler mechanically vibrating screen plate. They generally offer lower installed power, lower initial investment, and straightforward maintenance, making them useful for coarse screening, smaller production lines, and reject handling.

Neither machine is universally better.

For high-capacity fine screening, the pressure screen usually provides the stronger solution. For basic coarse separation or reject recovery, a vibrating screen can be more economical. In many recycled-paper stock-preparation systems, using both machines in different stages provides better overall performance than forcing one screen type to perform every duty.

Sun Hong Group supplies pressure screens, vibrating screens, screen baskets, rotors, and other pulp-preparation and paper-machine components. For a new screening project, provide the pulp furnish, capacity, consistency, screening position, contaminant type, required aperture, reject target, and available installation conditions so the screening configuration can be matched to the mill's actual production requirements.

FAQ

What is the main difference between a pressure screen and a vibrating screen?

A pressure screen uses pressure differential and rotor pulses to force acceptable pulp through a cylindrical basket. A vibrating screen uses mechanical vibration to move stock over a flat or inclined screen surface while acceptable pulp passes through holes or slots.

Which is better for fine pulp screening?

A pressure screen is generally better for fine screening because it can use narrow slotted baskets while rotor pulses keep the screen surface open during continuous operation.

Which screen is better for coarse pulp screening?

A vibrating screen can be a practical choice for coarse screening and reject handling because its design is simple, robust, and relatively inexpensive.

Which machine has higher production capacity?

Pressure screens generally provide significantly higher capacity per machine and per unit of floor space. Large industrial pressure screens can process several hundred tonnes of pulp per day.

Does a vibrating screen use less electricity?

Its installed motor power is normally much lower, but the machines perform different duties and capacities. Energy should be compared in relation to tonnes of pulp processed and the required screening quality.

Can a vibrating screen replace a pressure screen?

Not in every application. A vibrating screen may replace or supplement coarse screening duties but is generally not a direct substitute for a fine pressure screen close to the paper machine.

Can pressure screens and vibrating screens be used together?

Yes. A vibrating screen can remove coarse contaminants or recover fiber from rejects, while a pressure screen performs finer downstream separation. Multi-stage screening is common in pulp preparation.

Which screen is easier to maintain?

Vibrating screens usually have simpler mechanical construction. Pressure screens require additional attention to baskets, rotors, seals, bearings, and rotor-to-basket clearances.

Which screen is better for recycled paper pulp?

Both can be useful. Recycled-paper lines often use coarse screening first and pressure screening later because recovered furnish contains contaminants of many different sizes and types.

Why is a pressure screen used before a paper machine?

A pressure screen can remove relatively fine contaminants while maintaining enclosed, continuous, controlled stock flow. Low-pulsation designs are particularly useful before the headbox.

Does screen aperture size affect the choice?

Yes. Very fine slots generally favor pressure screening because rotor pulses help maintain basket cleanliness. Larger holes used for coarse separation can work effectively with vibrating screens.

Does better pulp screening protect paper machine clothing?

Yes. Removing contaminants before the forming section reduces the contaminant load reaching forming fabrics and other paper machine clothing. Fabric cleaners are still needed to remove deposits generated during normal operation.

What information is needed to select between the two screens?

Provide the pulp furnish, required capacity, inlet consistency, screening position, contaminant type, required hole or slot size, reject target, available space, and downstream paper-quality requirements.