Uwell Crown 4 Replacement Coils - 4 Pack | Double Helix Mesh Technology

Experience the pinnacle of sub-ohm vaping excellence with Uwell Crown 4 replacement coils - featuring revolutionary double helix mesh design, surgical-grade SS904L stainless steel, and patented self-cleaning technology. These premium replacement coils represent the most advanced atomizer technology available, delivering unparalleled flavour purity and exceptional longevity.

Engineered exclusively for the Crown 4 Sub-Ohm Tank, combining Pro-FOCS flavour optimization with luxury watch-grade materials for the ultimate vaping experience.

Why Choose Uwell Crown 4 Coils?

Revolutionary Double Helix Mesh Design

Our Crown 4 coils feature an innovative double helix mesh structure that maximizes surface area contact with e-liquid while ensuring perfectly even heat distribution. This cutting-edge design eliminates hot spots and provides instant, consistent vapour production with every draw.

Surgical-Grade SS904L Steel Construction

Each coil is crafted from SS904L stainless steel - the same premium material used in luxury Swiss watches and surgical instruments. This superior alloy offers exceptional corrosion resistance, enhanced flavour purity, and extended coil lifespan far beyond conventional materials.

Patented Self-Cleaning Technology

Crown 4 coils incorporate Uwell's breakthrough self-cleaning system that automatically collects excess e-liquid in a condensation chamber and re-vaporizes it during use. This eliminates waste, prevents leaking, and maintains optimal flavour clarity throughout the coil's life.

Pro-FOCS Flavour Optimization

The advanced Pro-FOCS (Pro-Flavour Optimized Coil System) recycles drawn air through the coil twice during each intake, saturating every puff with maximum flavour density and delivering an incredibly rich taste experience.

Available Crown 4 Coil Specifications

Dual SS904L Coil - 0.2Ω

• Resistance: 0.2 ohms

• Power Range: 70-80W (optimal 75W)

• Construction: Dual SS904L double helix mesh

• Best For: Intense flavour with massive cloud production

• Vaping Style: High-power DTL vaping

• Temperature Control: TC compatible due to SS construction

Dual SS904L Coil - 0.4Ω

• Resistance: 0.4 ohms

• Power Range: 60-70W (optimal 65W)

• Construction: Dual SS904L double helix mesh

• Best For: Balanced performance with excellent flavour

• Vaping Style: Moderate-power DTL vaping

• Temperature Control: TC compatible due to SS construction

FeCrAl UN2 Mesh Coil - 0.23Ω

• Resistance: 0.23 ohms

• Power Range: 60-70W (optimal 65W)

• Construction: FeCrAl honeycomb mesh design

• Best For: Enhanced flavour extraction with rapid heating

• Vaping Style: DTL vaping with instant response

• Temperature Control: Variable wattage mode only

Advanced Coil Technologies

Double Helix Mesh Innovation:

The double helix mesh structure delivers superior performance through:

• Increased surface area - up to 300% more e-liquid contact points

• Even heat distribution - eliminates hot spots and dry hits completely

• Instant heating response - immediate vapour production on activation

• Enhanced durability - mesh structure resists degradation and burning

• Optimal wicking - improved e-liquid flow through mesh geometry

SS904L Material Advantages:

Surgical-grade SS904L stainless steel provides:

• Superior corrosion resistance - 20x better than standard steel

• Flavour neutrality - no metallic taste interference

• Extended lifespan - significantly longer than conventional coils

• Temperature stability - consistent performance across power ranges

• Food-grade safety - medical/surgical grade material standards

Self-Cleaning System Benefits:

Patented self-cleaning technology automatically:

• Collects condensation in dedicated chamber at coil base

• Re-vaporizes excess e-liquid during normal vaping operation

• Prevents tank leaking by eliminating liquid accumulation

• Maintains flavour purity by recycling rather than wasting e-liquid

• Reduces maintenance requirements significantly

Pro-FOCS Technology Integration:

Pro-FOCS system enhances flavour delivery by:

• Double air circulation - each puff passes through coil twice

• Flavour saturation - maximum taste extraction from e-liquid

• Consistent performance - uniform flavour intensity throughout coil life

• Enhanced vapor quality - richer, more satisfying clouds

Tank Compatibility & Requirements

Primary Compatibility:

• Uwell Crown 4 Sub-Ohm Tank (5ml/6ml versions)

• Crown 4 Kit Tanks (included with starter kits)

• Crown 4 Pro variations (if applicable)

Installation System:

• Plug-and-pull design - no threading required

• Reinforced seals - liquid-tight fit and finish

• Simple replacement - intuitive installation process

• Secure connection - reliable electrical contact

Device Requirements:

These professional-grade coils require:

• Sub-ohm capable device with appropriate safety features

• Minimum 60W output for optimal performance

• Temperature control support (for SS904L coils)

• Quality battery capacity for sustained performance

Installation & Priming Guide

Professional Installation Process:

1. Safety preparation - Power off device and allow cooling

2. Tank disassembly - Remove top cap and empty e-liquid

3. Coil removal - Pull old coil straight out using gentle pressure

4. Inspection - Check tank base and connections for debris

5. New coil installation - Push new coil firmly until seated

6. Prime thoroughly - Apply 4-5 drops e-liquid to cotton wicking

7. Tank reassembly - Ensure all O-rings properly positioned

8. Fill and saturate - Add e-liquid and wait 10-15 minutes

9. Initial firing - Start at 50W and gradually increase to optimal

Critical Priming Requirements:

• Generous priming - SS904L coils require thorough saturation

• Extended wait time - Allow 10-15 minutes for complete absorption

• Gradual power increase - Start 20W below optimal range

• Break-in procedure - First 20-30 puffs at reduced power

• Performance monitoring - Watch for optimal flavour development

Self-Cleaning Activation:

• Initial cycles - First few vaping sessions activate cleaning system

• Regular operation - Self-cleaning works automatically during use

• Maintenance benefits - Reduced cleaning frequency required

• Performance optimization - Allow system to work between sessions

E-Liquid Recommendations

Optimal E-Liquid Specifications:

• VG Ratio: 70% VG minimum (higher VG preferred)

• Quality Level: Premium e-liquids for best flavour reproduction

• Viscosity: Medium to high VG for proper mesh saturation

• Nicotine Strength: 3-6mg maximum for sub-ohm vaping

Recommended E-Liquid Categories:

• Premium dessert flavours - Complex profiles enhanced by Pro-FOCS

• Artisan fruit blends - Natural sweetness amplified by SS904L

• Custard and cream varieties - Rich textures work excellently

• Tobacco blends - Sophisticated profiles showcased perfectly

E-Liquids to Avoid:

• High sweetener content - Can reduce coil lifespan significantly

• Dark, heavily coloured - May affect self-cleaning system efficiency

• Very thick max VG - May impede proper wicking in mesh structure

• Poor quality formulations - Can damage premium coil materials

Performance Optimization

Maximizing Coil Performance:

• Appropriate wattage - Stay within recommended power ranges

• Quality e-liquids - Premium formulations for best results

• Proper priming - Never rush the saturation process

• Self-cleaning utilization - Allow automatic system to function

• Regular rotation - Alternate between different flavour profiles

Extending Coil Lifespan:

• Avoid chain vaping - Allow cooling between intensive sessions

• Monitor e-liquid levels - Never vape with low tank levels

• Power management - Don't exceed maximum wattage ratings

• Cleaning schedule - Benefit from self-cleaning technology

• Storage conditions - Keep spare coils in cool, dry environment

Advanced Optimization Techniques:

• Temperature control - Use TC mode with SS904L coils when available

• Airflow coordination - Optimize tank airflow for coil type

• Battery management - Maintain consistent voltage for performance

• Flavour rotation - Prevent single-flavour saturation buildup

Troubleshooting & Maintenance

Common Issues & Solutions:

Muted Flavour:

• Check coil age (replace if over 3-4 weeks old)

• Verify proper priming and saturation

• Ensure wattage is within optimal range

• Allow self-cleaning system to cycle

Harsh Vaping Experience:

• Reduce wattage to lower end of recommended range

• Check e-liquid VG ratio (should be 70%+ VG)

• Verify coil is authentic SS904L material

• Allow longer cooling periods between draws

Short Coil Lifespan:

• Examine e-liquid quality and sweetener content

• Review vaping habits and power settings

• Check device capability and battery condition

• Ensure authentic Uwell coils with anti-counterfeit codes

Self-Cleaning Issues:

• Allow several vaping sessions for system activation

• Ensure proper coil installation and seating

• Check for tank assembly issues affecting condensation chamber

• Verify using appropriate e-liquid viscosity

Pro-FOCS System Deep Dive

How Pro-FOCS Works:

The Pro-FOCS system operates through sophisticated airflow management:

• Primary intake - Initial air draw passes through coil normally

• Secondary circulation - Air is recycled back through heating chamber

• Flavour enhancement - Additional vapour particles added to airflow

• Optimized delivery - Enhanced flavour density reaches taste buds

Maximizing Pro-FOCS Benefits:

• Draw technique - Longer, steady draws allow full system operation

• Power optimization - Proper wattage ensures effective vapour production

• Quality e-liquids - Premium flavours showcase system capabilities

• Regular maintenance - Clean airflow paths maintain system efficiency

Customer Reviews & Testimonials

★★★★★ "Best Coils I've Ever Used" "The SS904L construction is incredible - no metallic taste whatsoever and they last nearly a month! The self-cleaning really works too. Running the 0.2Ω at 75W with amazing results." - Verified UK Customer

★★★★★ "Pro-FOCS Makes All the Difference" "You can actually taste the difference with these coils. The flavour is so much richer and cleaner than anything else I've tried. Worth every penny for the quality." - Verified UK Customer

★★★★★ "Self-Cleaning Technology Works" "My tank stays so much cleaner with these coils. The self-cleaning isn't just marketing - it actually works. Less maintenance and better performance." - Verified UK Customer

Technical Specifications Table

Universal Features:

• Pack Size: 4 coils per package

• Installation: Plug-and-pull design

• Wicking: 100% organic cotton fiber

• Technology: Self-cleaning + Pro-FOCS system

• Anti-counterfeit: Verification codes included

Why Choose Vape Lounge Online?

Authentic Product Guarantee:

• 100% genuine Uwell products with anti-counterfeit verification

• Official distributor status ensuring legitimate supply chain

• Warranty support for all Crown series products

• Quality inspection - every coil checked before dispatch

• Anti-counterfeit codes - verify authenticity with confidence

Expert Technical Support:

• Crown series expertise - specialist knowledge of all Crown tanks

• Installation guidance for optimal coil performance

• Self-cleaning optimization tips and troubleshooting

• Pro-FOCS maximization techniques and advice

• Temperature control setup assistance for SS904L coils

Premium Service Standards:

• Fast UK delivery with comprehensive tracking

• Same-day dispatch for orders placed before cutoff

• Professional packaging prevents shipping damage

• Competitive pricing on all authentic Uwell products

• Customer satisfaction guarantee with full support

Frequently Asked Questions

1. What makes Crown 4 coils different from other Uwell coils?

Crown 4 coils feature unique SS904L surgical steel construction, double helix mesh design, patented self-cleaning technology, and Pro-FOCS flavor optimization - technologies not found in other Uwell coil series.

2. How long do Crown 4 coils typically last?

With the SS904L construction and self-cleaning technology, most users report 3-5 weeks per coil with proper care and quality e-liquids - significantly longer than conventional coils.

3. Can I use temperature control with these coils?

Yes, the SS904L coils (0.2Ω and 0.4Ω) support temperature control mode. The FeCrAl UN2 mesh coil (0.23Ω) is designed for variable wattage mode only.

4. How does the self-cleaning technology work?

The coils feature a condensation chamber that collects excess e-liquid and automatically re-vaporizes it during normal use, preventing waste and maintaining cleaner operation.

5. Are these coils worth the premium price?

Yes, the surgical-grade materials, advanced technologies, extended lifespan, and superior performance make Crown 4 coils an excellent long-term investment for serious vapers.

Coil Selection Guide

For Maximum Performance:

• 0.2Ω Dual SS904L - Highest power, maximum clouds and flavor

• 75W optimal power - Best performance range

• High VG e-liquids essential for proper operation

For Balanced Experience:

• 0.4Ω Dual SS904L - Moderate power with excellent flavor

• 65W optimal power - Good battery efficiency

• Versatile performance across different vaping styles

For Flavor Enthusiasts:

• 0.23Ω UN2 Mesh - Enhanced flavor extraction

• Honeycomb mesh design - Rapid, even heating

• Pro-FOCS optimization maximizes taste experience

For New Crown Users:

• 0.4Ω option - Easier to manage for beginners

• Lower power requirements - Less demanding on batteries

• Forgiving performance - Good results across power ranges

Advanced Maintenance Guide

Self-Cleaning Optimization:

• Regular use - Consistent vaping activates cleaning cycles

• Proper power levels - Adequate wattage ensures effective operation

• Quality e-liquids - Premium formulations work better with system

• Tank positioning - Keep tank upright when possible

Long-Term Care:

• Rotation schedule - Use multiple coils in rotation

• Storage conditions - Cool, dry storage for spare coils

• Installation checks - Verify proper seating and connections

• Performance monitoring - Track coil life and replacement timing

Material Science & Innovation

SS904L Steel Properties:

• Composition - Iron, chromium, nickel, molybdenum alloy

• Corrosion resistance - Superior to 316L and other grades

• Applications - Luxury watches, surgical instruments, marine hardware

• Vaping benefits - Flavor purity, longevity, temperature stability

Double Helix Engineering:

• Geometric optimization - Maximized surface area contact

• Heat distribution - Even temperature across entire mesh

• Structural integrity - Enhanced durability under thermal stress

• Performance consistency - Uniform results throughout coil life