Subject: Addressing FDA Compliance & Operational Efficiency in Pharmaceutical Sifting with the FDA Approved Coke Vibration Screen

1. PAINPOINT DRIVEN OPENING

Every production manager in pharmaceutical and foodgrade processing knows the cost of contamination. A single batch rejection due to noncompliant particle sizing can cost upwards of $50,000 in raw material loss and rework. For facilities handling carbonbased filtration media (coke), the challenges are acute: abrasive wear on mesh screens causes frequent downtime (averaging 46 hours per changeover), static buildup leads to blinding and reduced throughput, and standard industrial screens fail FDA 21 CFR Part 110 and 211 requirements for material contact surfaces.

Are your current screening solutions forcing you to choose between throughput speed and regulatory compliance? Do you face recurring fines or batch holds due to particle size inconsistency in your coke filtration media? The FDA Approved Coke Vibration Screen is engineered to eliminate these tradeoffs, providing certified sanitary construction while maintaining the highcapacity throughput your plant demands.

2. PRODUCT OVERVIEW

The FDA Approved Coke Vibration Screen is a highfrequency, gyratory sifter specifically designed for the classification and dedusting of activated carbon, calcined coke, and carbon black used in pharmaceutical filtration and food processing.

Operational Workflow:
1. Infeed: Material enters the top cover inlet via pneumatic or gravity feed.
2. Stratification: Highfrequency vibration (adjustable 12003600 RPM) separates fines from oversized particles across a multideck configuration.
3. Sanitary Screening: Material passes through FDAgrade 304/316L stainless steel mesh (20325 mesh) with polished welds (Ra < 0.8 µm).
4. Discharge: Three separate outlets: oversize (reject), onspec product, and fines (dust collection).
5. CIP Validation: System is designed for CleaninPlace (CIP) with no dead zones, ensuring rapid changeover between batches.

Application Scope: Ideal for pharmaceutical excipient blending, API filtration media, and foodgrade decolorization carbon. Limitations: Not recommended for materials exceeding 10% moisture content or particle sizes above 1 inch (25mm) without precrushing.

3. CORE FEATURES

FDACompliant Surface Finish | Technical Basis: Electropolished 316L stainless steel contact surfaces with Ra < 0.8 µm finish | Operational Benefit: Eliminates bacterial harborage points and meets 21 CFR 177.2600 requirements | ROI Impact: Reduces validation audit preparation time by 60% and eliminates surface contamination risk.

QuickRelease Tensioning System | Technical Basis: Pneumatic clamp rings with toolless screen deck removal | Operational Benefit: Screen changeover completed in under 10 minutes versus 45 minutes on bolted systems | ROI Impact: Recovers 350+ hours of production downtime annually in a 3shift operation.

AntiBlinding Bounce Ball Assembly | Technical Basis: FDAgrade silicone bounce balls beneath each screen deck | Operational Benefit: Prevents mesh blinding from fine coke dust, maintaining 95%+ open area | ROI Impact: Increases effective throughput by 18% compared to standard screens without antiblinding mechanisms.

ExplosionProof Vibration Motor | Technical Basis: ATEX/IECEx certified motor with grounding strap and sealed bearings | Operational Benefit: Safe operation in Class II, Division 1 environments where carbon dust is present | ROI Impact: Eliminates need for separate inert gas purge systems, saving $12,000 in installation costs.

Continuous Weld Construction | Technical Basis: Fullpenetration TIG welds on all seams, no gaskets or crevices | Operational Benefit: Prevents material entrapment and crosscontamination between batches | ROI Impact: Reduces cleaning validation costs by 40% per batch changeover.

Variable Frequency Drive (VFD) Control | Technical Basis: 0100% amplitude control via digital VFD | Operational Benefit: Finetune vibration intensity for different coke grades (e.g., 4x40 mesh vs. 8x30 mesh) | ROI Impact: Optimizes energy consumption, reducing power draw by 22% at lower throughput settings.

Integrated Dust Containment | Technical Basis: Negative pressure plenum with HEPAgrade exhaust port | Operational Benefit: Captures fugitive coke fines, maintaining workplace air quality below 0.5 mg/m³ | ROI Impact: Avoids OSHA fines (up to $15,000 per violation) and reduces respiratory PPE costs.

4. COMPETITIVE ADVANTAGES

| Performance Metric | Industry Standard (Standard Carbon Steel Screen) | FDA Approved Coke Vibration Screen | Advantage (% Improvement) |
| : | : | : | : |
| Surface Finish (Ra) | 3.2 µm (standard mill finish) | < 0.8 µm (electropolished) | 73% smoother surface |
| Screen Changeover Time | 45 minutes (bolted frame) | 10 minutes (pneumatic clamp) | 77% faster |
| Throughput (TPH) | 2.5 TPH (on 40 mesh) | 3.2 TPH (on 40 mesh) | 28% higher throughput |
| Blinding Rate (per 8hr shift) | 15% open area loss | 2% open area loss | 87% less blinding |
| Validation Documentation | Standard material certs | Full 21 CFR Part 11 traceability | 100% compliant batch records |
| Motor Enclosure | TEFC (nonexplosion proof) | ATEX/IECEx Zone 21 certified | Full explosion safety |

5. TECHNICAL SPECIFICATIONS

| Specification | Value |
| : | : |
| Model | FDS48SS (FDA) |
| Capacity (Coke, 40 mesh) | 3.2 tons per hour (max) |
| Screen Area | 4.0 m² (single deck) |
| Number of Decks | 13 (configurable) |
| Mesh Range | 20 mesh to 325 mesh (FDA 316L) |
| Vibration Frequency | 1200 3600 RPM (VFD controlled) |
| Amplitude | 2 6 mm |
| Motor Power | 2.2 kW (3 HP), 460V / 3phase / 60Hz |
| Material of Construction | 304L / 316L Stainless Steel (contact), 304 SS (support frame) |
| Surface Finish | Ra < 0.8 µm (electropolished) |
| Seals/Gaskets | FDAgrade Silicone (white) or EPDM |
| Operating Temperature | 10°C to 80°C (14°F to 176°F) |
| Ingress Protection | IP65 (motor), IP54 (control panel) |
| Dimensions (L x W x H) | 1500 mm x 1200 mm x 1400 mm |
| Weight | 450 kg (empty) |
| Certifications | FDA 21 CFR 177.2600, ATEX II 2D, CE, 3A Sanitary (optional) |

6. APPLICATION SCENARIOS

Pharmaceutical Activated Carbon Filtration | Challenge: A major API manufacturer faced 8% batch rejection due to oversized carbon particles ( > 150 µm) clogging downstream filter presses, costing $120,000 annually in rework. | Solution: Installed a 2deck FDA Approved Coke Vibration Screen with 100 mesh top deck and 200 mesh bottom deck, integrated with a VFD for precise amplitude control. | Results: Reduced oversized particles to < 0.5% of output. Filter press cycle time decreased by 35%. Batch rejection rate dropped to 0.2%. Annual savings: $114,000.

FoodGrade Decolorization Carbon Processing | Challenge: A sugar refinery needed to dedust activated carbon to prevent airborne contamination in their white sugar production line. Standard screens caused 20% material loss to dust collection. | Solution: Deployed a singledeck FDA screen with antiblinding bounce balls and a closedloop dust containment system. | Results: Captured 98% of usable carbon from the dust stream. Material recovery increased from 80% to 96%. Reduced HEPA filter replacement frequency from monthly to quarterly. ROI achieved in 7 months.

Calcined Coke for Electrode Manufacturing | Challenge: A carbon anode plant required consistent 4x40 mesh coke for anode paste. Their existing screen suffered 15% blinding after 4 hours, requiring manual cleaning. | Solution: Upgraded to a 3deck FDA screen with pneumatic tensioning and VFD control. | Results: Screen blinding reduced to 2% after 8 hours. Throughput increased from 2.1 TPH to 2.9 TPH. Manual cleaning eliminated, saving 2 labor hours per shift.

7. COMMERCIAL CONSIDERATIONS

Equipment Pricing Tiers:

• Base Model (FDS48SS): $28,500 – Single deck, 304 SS, standard FDA finish.
• Enhanced Model (FDS48SS316L): $34,200 – 316L contact parts, electropolished, ATEX motor.
• Premium Model (FDS48SSCIP): $41,800 – Full CIP capability, 3A sanitary, integrated PLC.

Optional Features:

• Automated Screen Tension Monitor: $3,200 – Realtime tension feedback to prevent screen failure.
• HEPA Filtration Module: $5,800 – For zeroemission dust control.
• Validation Documentation Package: $1,500 – Full IQ/OQ/PQ protocols and material traceability.

Service Packages:

• Standard Warranty: 12 months parts and labor.
• Extended Service Plan (ESP): $2,400/year – Includes annual inspection, screen replacement, and priority technical support.
• OnSite Commissioning: $4,500 – Includes installation, calibration, and operator training (2 days).

Financing Options:

• Net 30/60 terms for qualified buyers.
• Leasetoown: Starting at $1,200/month (36month term).
• Volume Discount: 5% off for orders of 3+ units.

8. FAQ

Q: Does the FDA Approved Coke Vibration Screen meet 21 CFR Part 211 for pharmaceutical manufacturing?
A: Yes. The screen is constructed with 316L stainless steel, electropolished to Ra < 0.8 µm, and uses FDAgrade silicone gaskets. Full material traceability and surface finish certification are included with each unit.

Q: Can this screen handle abrasive coke without excessive mesh wear?
A: Field data from 18 months of operation shows mesh life of 68 months on 40 mesh screens processing calcined coke. The pneumatic tensioning system maintains consistent tension, reducing mesh fatigue. We recommend using a sacrificial wear liner on the inlet for extended life.

Q: What is the maximum throughput for 200 mesh coke screening?
A: At 200 mesh, expect approximately 1.8 TPH on a singledeck unit. Throughput decreases with finer mesh due to reduced open area. The VFD allows you to optimize amplitude for your specific mesh size.

Q: How does the CIP system work?
A: The CIP model includes spray balls on each deck and a sloped bottom pan. Connect to your existing CIP skid (minimum 2 bar pressure, 60°C water). The system is designed with no dead zones, achieving a 99.9% cleaning efficiency in a 15minute cycle.

Q: What is the lead time for a custom mesh configuration?
A: Standard mesh configurations (20, 40, 60, 80, 100, 200, 325) ship within 2 weeks. Custom mesh sizes require 46 weeks for manufacturing and FDA certification.

Q: Is the screen compatible with existing pneumatic conveying systems?
A: Yes. The inlet is designed for standard 4inch triclamp connections. The outlet can be configured for rotary valve or direct gravity feed. We provide adapter kits for most common systems.

Q: What is the ROI timeline for replacing a standard industrial screen with this FDA model?
A: Based on a 2shift operation processing 5 TPH of coke, the typical ROI is 812 months. Savings come from reduced downtime (screen changeovers), lower rejection rates, and elimination of validation delays.