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Professional Flange & Valve Guards

Zhejiang HYHG – China’s First Flange Safety Shields Manufacturer with Over 20 Years of Expertise in Chemical Plant Safety Solutions

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About Us

Pioneers in Flange Protection

Zhejiang HYHG Environmental Protection Technology Co., Ltd. is the earliest professional flange guard manufacturer in China, with over 20 years of experience. We are proud to be the first company in China dedicated to manufacturing flange safety shields.

Our mission is to eliminate potential safety hazards in chemical plants by providing reliable, durable, and high-performance flange and valve protection solutions. Our products are designed to meet German precision standards and are trusted by industrial clients worldwide.

From PTFE and PVC flange guards to stainless steel spray shields and fiberglass valve insulation covers, we offer a comprehensive range of safety products that are safe, beautiful, and built to last.

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Flange Guard Manufacturing

20+ Years of Industry Leadership

Our Products

Discover our premium range of flange and valve protection systems engineered for chemical, petrochemical, and industrial applications.

PTFE Polytetrafluoroethylene Flange Guard

PTFE Flange Guard

High-quality splash shield made from pure polytetrafluoroethylene for extreme chemical resistance.

  • Chemical & heat resistant
  • Anti-static & flame retardant
  • Transparent for visual inspection
Three-Layer PVC Flange Guard

3-Layer PVC Flange Guard

Durable chemical splash shield with enhanced structural integrity and leak containment.

  • Multi-layer construction
  • Waterproof & UV resistant
  • With diversion port
Stainless Steel Flange Guard

Stainless Steel 304/316L

High-temperature metal spray shield for extreme environments and high-pressure systems.

  • Corrosion-resistant alloy
  • Withstands >500°C
  • Reusable & durable
Valve Heat Insulation Cover

Fiberglass Valve Insulation

Thermal jacket for valves to reduce heat loss and prevent burns.

  • High-temp insulation
  • Flexible & easy to install
  • Protects personnel
Transparent PVC Flange Guard

Transparent PVC Guard

Clear splash shield with reflective strip for visibility and safety compliance.

  • UV stabilized
  • Reflective warning tape
  • Easy inspection access
Pure PTFE Teflon Spray Shield

Pure PTFE Teflon Shield

Ultra-pure flange protector ideal for pharmaceutical and food-grade applications.

  • FDA compliant materials
  • Non-contaminating
  • Chemically inert
PP Safety Spray Shield

Colorful PP Flange Guard

Polypropylene safety shield available in multiple colors for system identification.

  • Color-coded options
  • Lightweight & impact resistant
  • Cost-effective solution
Ball Valve Flange Protector

Ball Valve Protector

Custom-fit guard for ball valves using polypropylene fiber composite.

  • Custom sizing available
  • Leak containment
  • Quick installation
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Why Choose FlangeGuardChina?

20+ Years Expertise

As China’s first flange guard manufacturer, we bring decades of experience and innovation to every product.

Safety First

Our products are engineered to prevent chemical leaks, protect personnel, and ensure regulatory compliance.

Global Reach

Trusted by industrial clients across Asia, Europe, and North America for reliable, high-performance protection.

20+
Years in Industry
50+
Countries Served
10M+
Units Manufactured
100%
Quality Inspected

Frequently Asked Questions

What materials are your flange guards made from?

We manufacture flange guards from PTFE (Teflon), PVC, polypropylene (PP), and stainless steel (304/316L), depending on application requirements.

Can you customize flange guards for specific sizes?

Yes, we offer custom sizing and design services to fit unique flange dimensions and industrial configurations.

Are your products suitable for high-temperature environments?

Absolutely. Our stainless steel and PTFE guards are designed to withstand extreme temperatures up to 500°C or higher.

Do you provide valve insulation covers?

Yes, we offer fiberglass heat insulation covers for valves to reduce energy loss and improve workplace safety.

What industries use your flange protection systems?

Our products are widely used in chemical processing, petrochemical, pharmaceutical, food & beverage, and power generation industries.

Get in Touch

For inquiries, quotes, or technical support, please visit our official website to connect with our team.

Contact Information

Phone: +86 15355706625

Alt Phone: +86 13357003622

Email: [email protected]

Email: [email protected]

Address: Building 3, No. 8, Donggang 8th Road, Kecheng District, Quzhou, Zhejiang, China

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