BROLERN Plastic Filter Cartridges - the product family this guide covers
Core points
- Most quotation delays come from incomplete RFQs - a photo and "please quote" forces the supplier to guess, and every guess becomes a clarification round [Filter Element industrial buying guide].
- The 12 details that decide the quote: medium, micron rating, dimensions, end-cap style, seal material, core, flow, pressure, temperature, cleaning method, quantity, delivery terms [Filter Element industrial buying guide][custom cartridge parameter checklist].
- End-cap language must be precise: DOE, SOE 222 flat/fin, SOE 226 flat/fin, threaded, flanged are not interchangeable [Praimo RFQ specification table].
- Seal materials (EPDM, NBR, FKM/Viton, silicone, PTFE-encapsulated) are chosen by fluid chemistry and sterilisation cycle, not by habit [Praimo RFQ specification table].
- For custom sintered media - plastic, bronze, stainless steel, PVF, fiber - a drawing or a used sample beats every written description [Industrial Metal Filters RFQ review process].
The 12-item checklist
| 1. Medium | Liquid or gas, chemical name and concentration |
|---|---|
| 2. Rating | Micron rating and whether nominal or absolute |
| 3. Dimensions | OD, ID, length - nominal and actual installation size |
| 4. End style | DOE, SOE 222 flat/fin, SOE 226 flat/fin, threaded, flanged |
| 5. Seals | EPDM, silicone, FKM/Viton, PTFE-encapsulated - by chemistry |
| 6. Core | Inner core material and support requirements |
| 7. Flow | Operating flow rate at the required viscosity |
| 8. Pressure | Operating pressure and maximum differential pressure |
| 9. Temperature | Continuous and maximum, including sterilisation cycles |
| 10. Cleaning | Backwash, ultrasonic, CIP - and reuse expectations |
| 11. Quantity | First order and estimated annual demand |
| 12. Delivery | Destination, schedule, packaging and documentation needs |
Media-specific notes
For sintered plastic (GMP/FDA grades), state the compliance documents required. For bronze and stainless, give the atmosphere and temperature so the alloy is right. For PVF, the target precision matters more than the pore number - it is tuned in production. For melt-blown and pleated elements, the surface finish and membrane chemistry are part of the quote. BROLERN manufactures all of these families, so one RFQ covers the whole train.
FAQ
Can suppliers quote from a photo?
A photo starts the conversation; drawings, dimensions and operating conditions finish it. Industry buying guides are explicit on this [Filter Element industrial buying guide].
Why seal materials matter?
EPDM, NBR, FKM and silicone are chosen by the fluid and sterilisation cycle - a wrong seal fails long before the media does [Praimo RFQ specification table].
Do we need a drawing?
For custom sintered media, yes - or send a used sample and we reverse-engineer it [Industrial Metal Filters RFQ review process].
Conclusion
A complete RFQ gets a complete quote - and makes supplier offers comparable against the same specification. Use the 12-item list, attach your drawing or sample, and BROLERN will return a technical proposal, not just a price.
FAQ
What information does a filter cartridge RFQ need?
Medium and concentration, target micron rating, dimensions, end-cap style, seal material, operating conditions (flow, pressure, temperature), quantity and delivery terms - plus a drawing or sample if available.
Can suppliers quote from a photo alone?
A photo starts the conversation but is not a specification - industry buying guides recommend drawings, dimensions and operating conditions for an accurate quote.
Why do seal materials need specifying?
EPDM, NBR, FKM, silicone and PTFE seals are not interchangeable - compatibility depends on the fluid, cleaning chemicals, temperature and sterilisation cycle.