GYLDT
Patented Technology

Flat Bottom Duckbill Check Valve

Professional-grade flat bottom duckbill check valve engineered for superior backflow prevention in demanding industrial applications. Trusted by global enterprises since 1989.

View Specifications
Flat Bottom Duckbill Check Valve

Why Choose Our Flat Bottom Duckbill Valves?

Engineered with patented technology and over 30 years of manufacturing excellence

Patented Design

Proprietary flat bottom design ensures optimal sealing performance and extended service life in critical applications.

Zero Maintenance

Self-cleaning mechanism eliminates debris buildup, reducing operational costs and maintenance requirements.

Custom Engineering

Tailored solutions for specific applications with custom flanges, materials, and dimensional requirements.

Global Standards

Compliant with ANSI, BS, JIS, and AS standards. CE, ISO9001, and EAC certified for international markets.

Cost Effective

Lower total cost of ownership through reduced maintenance, energy efficiency, and extended operational life.

Proven Reliability

Over 30 years of field-proven performance in harsh environments across 46+ countries worldwide.

Advanced Engineering for Critical Applications

The Flat Bottom Duckbill Check Valve represents the pinnacle of backflow prevention technology. Our patented flat bottom design creates an enhanced sealing surface that ensures complete closure under all operating conditions.

Manufactured using premium elastomers and precision molding techniques, these valves deliver unmatched reliability in the most demanding industrial environments. The unique flat bottom configuration eliminates the common failure points found in traditional duckbill designs.

Each valve undergoes rigorous quality testing including pressure cycling, temperature resistance, and chemical compatibility verification to ensure decades of trouble-free operation.

Working Principle

The flat bottom design creates a stable sealing surface that responds to minimal pressure differentials. When forward flow occurs, the flexible elastomer opens smoothly. Upon flow reversal, the flat bottom configuration ensures complete closure with zero leakage, preventing costly backflow incidents.

Performance Metrics

  • 99.9% backflow prevention efficiency
  • Low cracking pressure (0.5-2.0 PSI)
  • 20+ year service life expectancy

Material Options

  • EPDM (temperature: -40°C to +120°C)
  • Neoprene (chemical resistance)
  • Nitrile (oil & fuel applications)

Technical Specifications

Comprehensive technical data for engineering and procurement teams

Standard Specifications

Size Range 2" - 96" (50mm - 2400mm)
Pressure Rating Up to 150 PSI (10.3 bar)
Temperature Range -40°C to +120°C (-40°F to +248°F)
Flange Standards ANSI, BS, JIS, AS, DIN
Flange Material SS316, SS304, Carbon Steel
Elastomer Options EPDM, Neoprene, Nitrile, NR
Installation Type Flanged End Connection
Flow Direction Unidirectional

Key Features

  • Flat bottom design for superior sealing
  • Self-cleaning mechanism prevents clogging
  • Silent operation with minimal pressure loss
  • Corrosion and abrasion resistant materials
  • Lightweight design reduces installation costs

Applications

  • • Wastewater & stormwater discharge systems
  • • Marine & coastal protection structures
  • • Industrial process water systems
  • • Cooling tower applications
  • • Flood control & tidal barriers
  • • Municipal water treatment facilities

Quality Assurance & Certifications

Rigorous quality control and international certifications ensure reliable performance

ISO 9001:2015

Quality Management System Certified

CE Marking

European Conformity Certified

EAC Certificate

Eurasian Conformity Certified

R&D Patents

Proprietary Technology Patents

Manufacturing Excellence Since 1989

Our state-of-the-art manufacturing facility features 5 dedicated production lines with standardized processes and rigorous quality control at every stage. From rubber compounding to final assembly, each valve undergoes comprehensive testing to ensure optimal performance.

46+
Countries Served
30+
Years Experience
High-temperature vulcanization process
100% pressure testing before shipment
Traceability documentation for each batch
Material certification and compliance records
Automated production with human oversight

Installation & Technical Support

Comprehensive support from specification to installation and beyond

Engineering Support

  • Application-specific sizing calculations
  • Custom CAD drawings and specifications
  • Material selection guidance
  • Performance modeling and analysis

Installation Services

  • Detailed installation manuals
  • On-site installation supervision
  • Commissioning and testing support
  • Training for maintenance personnel

Ongoing Support

  • 24/7 technical helpline
  • Rapid spare parts availability
  • Performance monitoring guidance
  • Warranty and service programs

Ready to Discuss Your Project Requirements?

Our technical team is standing by to provide customized solutions for your specific application. Get expert guidance on sizing, materials, and installation requirements.

+86 18703845698
Info@focalvalve.com
✓ Free technical consultation • ✓ Custom engineering solutions • ✓ 24-hour response guarantee