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Your Reliable Partner in the Chemical Industry

With over 30 years of expertise, DOXI delivers high-performance, chemically resistant valves trusted by global leaders like Samsung Electronics. Engineered for safety, durability, and precision.

DOXI Valve Industrial Equipment

High Chemical Resistance & Anti-Corrosion Performance

All DOXI valves are manufactured under strict quality assurance processes to ensure safe transport of aggressive fluids in the most demanding chemical environments.

FDA Certified

DOXI PFA lined valves meet FDA standards for purity and safety in sensitive applications.

SEMI Qualified

Sample passed electronic grade SEMI testing — ideal for semiconductor manufacturing.

Samsung Supplier

Trusted by Samsung Electronics since 2019 for high-reliability valve solutions.

About DOXI

Over three decades of innovation, precision engineering, and unwavering commitment to quality in valve manufacturing.

DOXI Factory and Manufacturing

More Than 30 Years of Experience

  • • 1990: Yongjia Xuanda Anticorrosive Equipment Factory formed — the foundation of DOXI.
  • • 2011: The “DOXI” brand was officially created, marking a new era of innovation.
  • • 2017: DOXI PFA lined valve obtained FDA certification — a milestone in quality.
  • • 2019: Began supplying high-performance valves to Samsung Electronics, South Korea.
  • • 2024: Successfully passed electronic grade SEMI testing — entering the semiconductor market.

DOXI continues to push the boundaries of material science and valve engineering to serve the most critical industrial applications worldwide.

View Full Company History

Our Products

Engineered for extreme chemical resistance, high purity, and long-term reliability across industries from semiconductors to pharmaceuticals.

PFA Lined Ball Valve

PFA Lined Ball Valve

FDA certified, ultra-pure, ideal for semiconductor and pharmaceutical applications.

  • Size: DN15-DN200
  • Pressure: PN10/16
  • Temp: -20°C to +180°C
  • Standards: ISO, SEMI, FDA
PTFE Lined Butterfly Valve

PTFE Lined Butterfly Valve

High anti-corrosion, low torque, suitable for aggressive chemical media.

  • Size: DN50-DN1200
  • Pressure: PN6-PN16
  • Actuation: Manual, Pneumatic, Electric
  • Material: Cast Iron, Carbon Steel
Diaphragm Valve

PFA Lined Diaphragm Valve

Zero leakage design, excellent for ultra-pure and corrosive fluid control.

  • Size: DN15-DN200
  • Ends: Wafer, Lug, Threaded
  • Diaphragm: PFA, EPDM, FPM
  • Applications: Ultrapure Water, Acids, Alkalis
Check Valve

PFA Lined Check Valve

Prevents backflow in corrosive systems with high sealing reliability.

  • Size: DN25-DN300
  • Type: Swing, Lift
  • Material: CS/PFA, SS/PFA
  • Standards: ANSI, DIN, JIS
Globe Valve

PFA Lined Globe Valve

Precise flow regulation in high-corrosion environments.

  • Size: DN15-DN200
  • Pressure: Class 150-300
  • Trim: PFA, PTFE
  • Applications: Chemical Processing, Wastewater
Y-Strainer

PFA Lined Y-Strainer

Protects downstream equipment from particulates in corrosive lines.

  • Size: DN25-DN300
  • Mesh: 1.0mm, 1.5mm, 2.0mm
  • Body: CS/PFA, SS/PFA
  • Ends: Flanged, Threaded
Sanitary Ball Valve

Sanitary PFA Ball Valve

Designed for food, beverage, and pharmaceutical sanitary systems.

  • Size: 1/2" to 4"
  • Connection: Tri-Clamp, DIN, SMS
  • Finish: Ra ≤ 0.8μm
  • Certifications: FDA, 3A
Multi-Port Valve

PFA Lined Multi-Port Valve

Efficient flow diversion in complex piping systems.

  • Configurations: 3-Way, 4-Way
  • Size: DN25-DN150
  • Actuation: Manual, Pneumatic
  • Applications: Process Switching, Sampling

Why Choose DOXI?

From material science to global certifications, DOXI sets the standard in corrosion-resistant valve technology.

Unmatched Quality Assurance

Every valve undergoes rigorous testing under a company-committed statistical quality assurance process to ensure reliability and safety.

Advanced Material Expertise

Leveraging PFA, PTFE, and other fluoropolymers for maximum chemical resistance and purity in even the harshest environments.

Global Recognition

Trusted by Samsung Electronics and compliant with FDA, SEMI, ISO, and other international standards for performance and safety.

30+
Years Experience
2011
DOXI Brand Founded
2019
Supplier to Samsung
2024
SEMI Grade Passed

Frequently Asked Questions

DOXI valves are primarily lined with PFA (Perfluoroalkoxy) and PTFE (Polytetrafluoroethylene), offering exceptional chemical resistance and purity.
Yes, DOXI’s PFA lined valves have obtained FDA certification, making them suitable for food, pharmaceutical, and semiconductor applications.
Yes, DOXI exports globally and has been a trusted supplier to Samsung Electronics in South Korea since 2019.
DOXI valves are used in chemical processing, semiconductor manufacturing, pharmaceuticals, wastewater treatment, and food & beverage industries.
Yes, in 2024, DOXI successfully passed electronic grade SEMI testing, qualifying our valves for use in semiconductor fabrication facilities.

Get in Touch

For product inquiries, technical support, or partnership opportunities, visit the official DOXI Valve website.

Address:

Xuanda Industrial Park, Oubei Town, YongJia County, Zhejiang, China

Email:

[email protected]

Hotline:

86-15967401991

Visit Official Website

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