Get in touch with ECOFILTRONE™ Company
Polyester (PE) Felt Filter Bags for Industrial Liquid Filtration
- Technical quotation within 24 hours
- Replacement matching
- Custom configuration
- Sample and trial support
Our polyester (PE) felt filter bags are designed for industrial liquid filtration, not for dust collection. Prior to finalizing an ECFB configuration, we check the liquid, solids, temperature, target micron grade, bag size, top seal, housing interface and required documents.
Send what you already have. An existing part number, drawing, data sheet, photo or sample gives us a practical starting point for replacement matching.
Stable Liquid Filtration Starts with the Right Bag Specification
Although a felt filter bag may bear the name of the correct process material, performance may be unacceptable due to incorrect rating, diameter, length, and/or ring. We emphasize evaluating the process operating conditions rather than treating a catalogue label as a complete specification.
A finer grade is not automatically the better filter. Particle size, shape, concentration, loading and the required downstream result determine whether a 25 micron option belongs in the shortlist.
The support basket, collar, ring material and seating surface form part of the filtration system. That is why our review verifies these details instead of expecting media selection alone to prevent bypass at an incorrect interface.[6]
Polyester compatibility changes with the fluid, pH, concentration, water content, temperature and exposure time. The material review considers these variables together before we recommend polyester.
Two bags with a similar shape may use different top seals, seams or dimensions. Our replacement check matches the available part number, measured size, photo, drawing or physical sample to the offered construction.
ECFB Polyester Felt Bag Configurations and Selection
For this ECFB product family, our product reference identifies the filter medium as polyester/PET while using PE in the model name. The term PE is used in multiple contexts in filter media and thus an explicit definition is necessary.
Your starting point
What to send
What we confirm
Known existing model
What to send
Part number, manufacturer reference and quantity
What we confirm
Cross-reference scope, dimensions, top seal, construction and required documents
Existing bag without a model
What to send
Overall length, diameter, ring/flange measurements, seam photos and sample if available
What we confirm
Physical fit, support basket interface and replacement configuration
Known housing only
What to send
Housing model, basket dimensions, flow direction and current operating data
What we confirm
Bag size, ring or collar interface and installation details
New application
What to send
Fluid, solids, temperature, flow, viscosity, target result and batch or continuous duty
What we confirm
Material route, rating discussion, size, surface finish, seal option and trial plan
Standard reference
Our review starts from the recorded ECFB dimensions and SS or PP ring options, then verifies the offered model against your housing.
Replacement route
The replacement route compares the old bag and housing information instead of promising universal compatibility from one nominal size.
Custom route
Before production release, our review covers size, top seal, sew or weld requirement, finish, quantity and documentation.
PET Needle Felt, Surface Finish and Seal Options
Polyester fibers form depth-filter media and can capture particulate at several locations throughout the media. The outcome is dependent on the type of fibers used, their surface treatment, shape, and the level of loading.
| Configuration point | Selection logic | Quotation output |
|---|---|---|
| PET needle felt | Reviewed against liquid chemistry, temperature, particulate and required cleanliness | Material identified on the offered data sheet |
| Surface condition | A requested singe, glaze or other finish is reviewed for availability and the intended solids-release behavior | Finish named only when confirmed for the offered model |
| Sewn construction | Seam path and thread exposure are checked against the process and bypass concern | Sew details confirmed on drawing or data sheet |
| Welded construction | The weld requirement is reviewed where seam geometry or loose fiber control matters | Availability confirmed for the selected size and material |
| SS ring | Stainless steel ring option is checked against housing fit and fluid contact requirements | Ring material and dimensions stated in the offer |
| PP ring | Polypropylene ring option is checked against interface geometry, temperature and chemical exposure | Ring material and dimensions stated in the offer |
Construction review before quotation
A seam or ring mismatch creates bypass risk because the felt, top seal and housing interface act as one system. ECOFILTRONE™ confirms the requested finish, seam route and ring geometry for the offered 25 µm or other grade; send your drawing or sample for a specific review.
Micron Ratings, Standard Sizes and Operating Limits
The values cited are for ECFB products, and should not be interpreted as guarantees. Final confirmation of specification is based on our assessment of the end-user’s requirements, including housing and operating conditions.
| Specification | ECFB reference | Confirmation boundary |
|---|---|---|
| Filter material | Polyester/PET needle felt | Confirm against full fluid chemistry and contact conditions |
| 25 micron grade | 25 µm selection context | Confirm nominal/absolute basis, efficiency and test method before using it as an acceptance criterion |
| Temperature reference | 120°C (248°F) | Review pH or concentration, water content and exposure duration together |
| Differential-pressure reference at 20°C | 2.0 bar (29.0 psi) | Review flow rate, viscosity, specific gravity, housing, loading and failure/change-out criterion |
| Differential-pressure reference at 120°C | 1.0 bar (14.5 psi) | Use only with the temperature and chemistry review for the offered configuration |
| Seal ring materials | SS or PP | Confirm ring dimensions, seating geometry and fluid contact requirements |
| Size 1 | Ø180 × L420 mm (Ø7.09 × L16.54 in) | Confirm against housing and basket dimensions |
| Size 2 | Ø180 × L810 mm (Ø7.09 × L31.89 in) | Confirm against housing and basket dimensions |
| Size 3 | Ø105 × L230 mm (Ø4.13 × L9.06 in) | Confirm against housing and basket dimensions |
| Size 4 | Ø102 × L380 mm (Ø4.02 × L14.96 in) | Confirm against housing and basket dimensions |
| Size 5 | Ø150 × L520 mm (Ø5.91 × L20.47 in) | Confirm against housing and basket dimensions |
Micron rating context
Mean, nominal and absolute labels describe different rating concepts, while a controlled performance method also fixes the test fluid, contaminant, loading and measurements.[2][3] A micron number by itself is therefore not a complete capture specification.
Differential pressure context
The pressure response changes as the bag loads and as flow, viscosity and temperature change. Those two reference values become a design-review input, while we set the operating or replacement criterion with the housing and process owner.
ECFB size, micron, ring/seal and operating-limit decision matrix
A buyer can request a 25 micron filter bag but still lack the rating basis, efficiency, challenge particulate and test conditions needed to predict capture performance. The trade-off between a finer grade and usable cycle length depends on loading, flow and the agreed downstream result, so the matrix keeps the grade beside its fit and operating context.
Pricing, Lead Times and Order Terms
Our prices are based on multiple factors including the micron grade, size or seal condition, ring or finish, and quantity. We consider customizations, shipping, and other factors. Your quoted prices reflect an assessment of the offered configuration.
- Technical quotation
- We respond within 24 hours after receiving enough application and specification information.
- In-stock lead time
- 4-5 calendar days for in-stock items, confirmed with the quotation.
- Custom sample
- 7 calendar days after technical confirmation.
- Custom production
- 14 calendar days for custom production after technical confirmation.
- Minimum order
- Trial orders are accepted; standard MOQ depends on the product; custom-order MOQ is 100 pieces.
- Sample policy
- Samples are free; freight is paid by the customer.
- Payment
- 30% deposit and 70% balance before shipment by wire transfer.
Total-cost review, not a savings shortcut
Compare bag consumption, change-out labor, interruption time, disposal volume, product-loss risk and downstream protection. Our team can help organize those inputs, but the cost-effective choice depends on your measured loading and operating result rather than an invented payback percentage.
Quality Inspection and Order Documentation
Procurement teams need order-specific documents (i.e. drawings, inspection records, material certificates, compliance documents, etc.) before they can release an order. We evaluate the offered material, dimensions, construction and inspection scope before production. Our filter bag line includes cutting, sewing and related operations (i.e. assembly and/or sealing), while inspection is selected according to the product requirements.
Documents confirmed before quotation
Applicable datasheets, drawings, inspection records, material certificates and compliance documents are confirmed for the specific product and order before quotation.
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PHASE 01
The quotation, data sheet or drawing is scrutinized to validate it specifies the approved construction and materials.
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PHASE 02
During production, we verify the approved configuration through cutting, assembly and the applicable sewing or welding route.
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PHASE 03
Inspection of the product involves dimensional, integrity, flow or filtration-performance checks as required for the confirmed product.
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PHASE 04
Shipment of the product is effected only after the packaging and documents have been reviewed to confirm they are in order.
How We Work: Application Review, Replacement Matching and Order Workflow
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Operating or replacement data should identify the fluid, solids, temperature, target micron and flow or housing. Provide the top seal, dimensions, product construction and existing part number. Other required supporting documents and quantity are to be provided as specified.
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During application review, we confirm that polyester felt belongs in the candidate material list and identify missing compatibility inputs.
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Our team verifies that the ECFB size, ring construction and rating language conform to the process and housing.
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A sample or technical confirmation is obtained with a specified data sheet or drawing before a product is produced for the first time.
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During production and inspection, the scope and configuration are maintained as approved.
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Review of shipments verifies that they are packed and prepared for transportation as approved. Review is also conducted to confirm that the shipment is in order before the customer proceeds with installation and after-sales review.
Before the order
Before the order, we provide application review, filter selection, specification verification, OEM replacement matching, customized configuration and sample or trial support.
After installation
After installation, our follow-up examines operating performance, differential pressure, service life, troubleshooting signals and the next filtration configuration.
Industrial Liquid Filtration Applications We Support
We provide industrial filtration consumables and engineering support for industrial water and process applications. For this product, application routing remains subject to the actual liquid, solids, temperature, loading, housing and required documentation.
01
Industrial water treatment
Suspended solids control, polishing and equipment protection where a replaceable liquid filter bag fits the process duty.
02
RO and UF pretreatment
Upstream particulate control reviewed against membrane protection goals, flow, housing and change-out strategy.
03
Wastewater and water reuse
Particulate or precipitated-solid removal before downstream treatment, reuse or recirculation stages.
04
Power and cooling systems
Water or coolant filtration reviewed against temperature, corrosion-control chemistry and equipment-protection requirements.
05
Chemical and petrochemical processing
Chemical compatibility and operating exposure are screened before polyester is selected for a process stream.
06
Food and beverage processing
Process filtration support with all fluid-contact materials and required documents confirmed for the product and order.
Application fit comes before the industry label
The wrong call can move solids downstream or make a suitable bag look ineffective at the seal. Unlike a generic application list, our review keeps material, rating, housing and required documents tied to your process; the right call is application-specific, so send your operating conditions for review.
FAQ: Polyester Felt Filter Bags
For the ECFB product family on this page, PE denotes polyester and the material is described as polyester/PET needle felt. It should not be read as polyethylene, and this page covers liquid filter bag service rather than a baghouse or air-filtration product.
It can be a useful selection point when the target particulate, solids loading, flow and downstream requirement align. Confirmation also covers whether the offered rating is nominal or absolute and what test or efficiency statement applies before we treat 25 µm as an acceptance criterion.
Send the fluid, solids, operating temperature, target micron, flow or housing model, measured dimensions, top seal, current part number, quantity and document needs. A sample, photo, drawing or old data sheet can shorten the replacement review.
The recorded sizes are Ø180 × L420 mm, Ø180 × L810 mm, Ø105 × L230 mm, Ø102 × L380 mm and Ø150 × L520 mm. Final confirmation covers the diameter, length, support basket and ring or flange interface for the offered model.
The product reference is 120°C (248°F). Our review covers chemistry, pH or concentration, water content, pressure and exposure duration because the combined condition controls suitability.
Start with the housing model or old bag part number, then record diameter, length, top-seal geometry, ring material, seam construction and basket details. Our match checklist helps you identify missing inputs before you submit the request.
The ECFB reference lists SS and PP ring materials. Final selection confirms the exact ring dimensions, seating geometry, temperature and fluid-contact requirements for the chosen bag and housing.
Customized filtration requirements are supported based on the operating condition and replacement interface. Custom-order MOQ is 100 pieces, and the drawing or data sheet is confirmed before production.
Samples are free; freight is paid by the customer. Trial orders are accepted, and we first confirm the application and sample specification so the trial answers a defined selection question.
Before quotation, we confirm applicable data sheets, drawings, inspection records, material certificates and compliance documents for the specific product and order. Tell us the destination and release-document list in the first inquiry.
Track clean-start pressure, flow, product quality and the pressure trend as the bag loads. Our comparison uses those observations with solids loading, viscosity, housing and the agreed change-out criterion rather than assigning one universal service-life number.
