High-Performance Polyurethane-Lined Discharge Spool for Bauer P/N 208806
Polyurethane-Lined Slurry Discharge Flange Spool | 100% Mechanical Interchangeability for Bauer MAT Plants
Disclaimer: All manufacturer names, symbols, part numbers (including Bauer, MAT, BE 100, BE 170, BE 250, BE 400, BE 500, BC 35, P/N 208806, and PN 208806), and descriptions are referenced strictly for cross-reference, technical identification, and mechanical compatibility purposes. Our parts are independent, high-grade aftermarket replacement pipeline components and are neither manufactured nor endorsed by the OEM.
Engineering Deconstruction & Hydro-Wear Protection
In deep diaphragm wall trench cutting, tunnel boring slurry separation, and bored pile desanding, the underflow discharge section of a hydrocyclone experiences severe hydro-abrasive wear. Slurry containing dense quartz sand and abrasive micro-cuttings discharges at velocities exceeding 10 m/s. When an unlined or thin-walled discharge fitting (OEM Part Number: 208806 / P/N 208806 / MPN 208806) suffers liner debonding or localized scouring, turbulent eddies rapidly cut through the steel structure.
A ruptured discharge spool releases pressurized bentonite slurry across the mud plant deck, flooding dewatering screens and bringing excavation to a halt. Sourcing replacement parts through conventional OEM channels regularly requires 10 to 14 weeks of lead time with high import markups.
Our precision-welded Polyurethane-Lined Slurry Discharge Flange Spool (Cross-Reference Part Number: 208806 / PN 208806-EQ) features a thick, hot-vulcanized cast polyurethane liner integrated with a seamless steel shell, delivering 100% mechanical interchangeability on Bauer MAT desanding plants at a 35–45% direct procurement cost reduction.
Technical Specifications & OEM Cross-Reference
| Engineering Parameter | OEM Specification | Aftermarket Replacement Standard | Compliance & Tolerance |
|---|---|---|---|
| OEM Cross-Reference P/N | 208806 / PN 208806 | PN-208806-EQ | 100% Direct Bolt-on Fit |
| Compatible Machinery | Bauer MAT Desanding Units | BE 100, BE 170, BE 250, BE 400, BE 500 | Drop-in Replacement |
| Component Description | Cyclone Underflow Discharge Spool | Polyurethane-Lined Reducer Sleeve | API Spec 13C Compliant |
| Nominal Bore (DN) | DN80 (3") / DN100 (4") / DN125 (5") | Standard Full Bore Passage | Smooth Transition Throat |
| Structural Shell Material | Heavy-Gauge Carbon Steel | Seamless ASTM A106 Gr.B / Q355B | High Yield Strength |
| Protective Liner Material | Abrasion-Resistant Compound | Hot-Cast Polyurethane (CPU Shore 90A) | High Rebound Resilience |
| Internal Liner Thickness | 8.0 mm – 10.0 mm | 10.0 mm – 12.0 mm Thick Wear Barrier | DIN ISO 4649 ≤ 30 mm³ Loss |
| Liner-to-Steel Adhesion | Standard Vulcanized Bond | Chemical Cross-Linked Primer | Peel Strength ≥ 14 kN/m |
| Flange Connection Spec | Bauer Metric Multi-Hole Pattern | DIN EN 1092-1 / ASME B16.5 Compatible | Precision CNC Drilled (± 0.2 mm) |
| Sealing Interface | Requires Gasket | Full Polyurethane Over-Molded Face | Gasket-Free Direct Face Seal |
| Pressure Rating | Up to 1.0 MPa (145 psi) | 1.6 MPa (232 psi) Shock Proof | Hydro-Tested to 2.5 MPa |
Manufacturing Standards & Quality Control
- Integrated Over-Molded Flange Face: The 10–12 mm CPU lining extends continuously over the mating flange face, forming an integrated elastomeric sealing ring that eliminates the need for separate rubber gaskets and prevents interface leaks under high-vibration conditions.
- High-Adhesion Centrifugal Casting: Molten prepolymer is cast under high-vacuum conditions with heated chemical cross-linking agents, preventing void formation and achieving a liner-to-steel peel bond exceeding 14 kN/m.
- Precision CNC Flange Finishing: Flange faces and mounting holes are machined on CNC machining centers to ensure bolt-circle concentricity within ± 0.2 mm, preventing mechanical piping stress during field installation.
Maintenance & Refurbishment Installation Guidelines
- Face Cleaning: Scrape and clean mating manifold faces to remove hardened bentonite cake and scale before mounting the replacement spool (P/N 208806).
- Gasket-Free Assembly: Because the polyurethane liner forms an integrated full-face gasket over the flange face, do not install secondary paper or thin rubber gaskets, which can cause uneven flange bolt loading.
- Gradual Torque Sequence: Tighten bolts across a diagonal cross-star pattern in three progressive torque increments (30% → 70% → 100%) to achieve uniform gasket compression.
Frequently Asked Questions
Q: Can this polyurethane-lined spool (P/N 208806) directly replace original Bauer MAT components without modifying the piping?
A: Yes. Face-to-face height, reduction taper angle, bolt pitch circle diameter, and throat ID match original Bauer P/N 208806 engineering specifications for direct bolt-on installation.
Q: Does the integrated polyurethane flange face eliminate the need for separate flange gaskets?
A: Yes. The CPU 90A polyurethane over-molds the entire flange face, serving as a resilient, leak-tight sealing face that absorbs shaker-induced frame vibration without tearing.
Q: What inspection records are provided with each order?
A: Each shipment includes an EN 10204 3.1 Material Test Certificate, Shore A hardness test records, polyurethane peel adhesion inspection reports, and 2.5 MPa hydrostatic pressure test certificates.
