This page is not the official website. Generated by AI, does not constitute any advice. If needed, please click here to visit the corresponding official website.

Premium Expansion Joints &
Industrial Valves Since 1989

The earliest R&D patents for duckbill check valves in China. Trusted by core clients for over 20 years across 46+ countries.

Explore Products Request Quote

Pioneering Valve Innovation Since 1989

GYLDT CO., LIMITED is one of China’s earliest innovators in duckbill check valve technology. Our founder was the first person in China to introduce and patent duckbill and curved-bill check valve designs, laying the foundation for decades of engineering excellence.

With over 35 years of manufacturing experience, we deliver premium rubber expansion joints, flap gate valves, dismantling joints, and metallic bellows to global markets — all backed by ISO 9001-2000, CE, and EAC certifications.

46+
Countries Served
35+
Years of Excellence
FocalValve Manufacturing Facility

Trusted by Industry Leaders Worldwide

≥ 52%
10+ Year Clients
Long-term trusted partnerships
≥ 68%
5+ Year Clients
Strong business relationships
≈ 30%
New Clients
Growing global reach
≥ 95%
B2B Clients
Professional partnerships

Our Product Portfolio

Engineered for durability, reliability, and performance in critical infrastructure applications across wastewater, marine, flood control, power plants, and industrial systems.

Duckbill Check Valves

Duckbill Check Valves

Patented technology for backflow prevention. Our founder pioneered this innovation in China with original R&D patents.

  • • Prevents reverse flow in drainage systems
  • • Made from high-performance rubber
  • • No moving parts – maintenance-free
  • • Ideal for wastewater & stormwater
Rubber Expansion Joints

Rubber Expansion Joints

Special rubber formula developed through decades of R&D. Superior flexibility and vibration absorption.

  • • Reduces pipe stress and noise
  • • Resists corrosion and thermal expansion
  • • Available in standard & threaded union
  • • Used in pumps, compressors, HVAC
Flap Gate Valves

Flap Gate Valves

Available in HDPE, DI, CS, SS, and FRP materials. Ideal for flood control and drainage systems.

  • • Automatic operation with flow
  • • Corrosion-resistant materials
  • • Low head loss design
  • • Suitable for tidal & marine use
Dismantling Joints

Dismantling Joints

Quick-disconnect piping solution made from CS, SS, or DI. Enables easy maintenance and repair.

  • • Facilitates pump and valve removal
  • • Compact and reliable sealing
  • • Reduces downtime during service
  • • Pressure-rated for industrial use
Metallic Bellows

Metallic Bellows

Designed for high-temperature and high-pressure applications. Stainless steel construction for durability.

  • • Absorbs axial and lateral movement
  • • Used in thermal power plants
  • • Resists extreme temperatures
  • • Long fatigue life under stress
⚙️

Custom Valve Solutions

AI-powered service: You state requirements, we handle the rest — from design to delivery.

  • • Tailored to your project specs
  • • Fast prototyping and production
  • • Full technical documentation
  • • Satisfaction guaranteed
🌊

Marine & Coastal Protection

Specialized valves and joints for seawater, tidal zones, and offshore environments.

  • • Saltwater corrosion resistance
  • • UV-stable rubber compounds
  • • Submersible designs available
  • • Compliant with marine standards
🔥

Thermal Power Plant Solutions

High-performance expansion joints and valves for cooling towers and steam systems.

  • • High-temperature resistance
  • • Vibration damping
  • • Long service life under stress
  • • Meets power industry standards

What We Value Most

Quality

  • • ISO & CE Certified
  • • 100% inspection rate
  • • Technology improvement initiatives

Long-term Partnership

  • • Honesty & Trustworthiness
  • • Decade-long client relationships
  • • Mutually beneficial terms

AI Service

  • • You state requirements
  • • We handle all the rest
  • • Satisfaction guaranteed

Warranty

  • • 12-month warranty period
  • • Free replacement for defects
  • • IOM instruction included

Manufacturing Excellence

1

Rubber Refining

Patented process for stronger elastomer performance and durability.

2

Rubber Sheet Making

Mechanized lines ensure consistent thickness and quality.

3

Winding Molding

Uniform structural integrity across 5 production lines.

4

High Temp Vulcanization

Precise control ensures optimal material longevity.

5

Quality Testing

Rigorous checks meet ISO 9001-2000 and international standards.

5 Production Lines • Mechanized Production • Large Inventory • Sufficient Mould Reserve

Get Custom Valve Solutions

Our expert team is ready to assist with technical specifications, quotes, and custom designs.

Visit Official Website to Contact
China Quality Suppliers fobcompany.info

Notice for Buyers: If you are a buyer, the above information is generated by AI collection and does not constitute any advice. If necessary, please visit the corresponding official website.

For Domain Owners: If you are the domain owner and do not want to be included by fobcompany.info, please contact support@fobcompany.info via your corporate email to cancel. We will cancel your inclusion within 3 business days.

如果您是域名所有者 不想被fobcompany.info收录 请用企业邮箱联系support@fobcompany.info 取消收录 我们将在3个工作日取消您的收录

Service Request: If you are other domain and want to be included, please contact support@fobcompany.info

如果您是其他域名合作 也请联系support@fobcompany.info