PTFE Lined Check Valve Chemical Pipeline Non Return Valve

The Flange Fluorine-Lined Butterfly Valve is a high-performance corrosion-resistant valve designed for controlling and isolating highly corrosive fluids in industrial pipeline systems. The valve adopts a fluoropolymer lining structure, such as FEP, PTFE, or PFA, which provides excellent chemical resistance and prevents direct contact between the medium and the metal valve body.

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Flange fluorine lined butterfly valve Parameter Specifications Industry Applications

Flange fluorine lined butterfly valve

Featuring a compact flange connection design, lightweight structure, low operating torque, and reliable sealing performance, this valve is suitable for handling strong acids, alkalis, solvents, and other aggressive chemical media. It provides long service life and stable operation in harsh environments.

OEM Capability & Customization

We provide comprehensive OEM manufacturing and customized solutions to satisfy different industrial requirements, including:

Customized valve sizes, pressure ratings, and flange standards.
Customized fluorine lining materials (FEP / PTFE / PFA) according to different corrosive media.
Customized valve body materials, including carbon steel, stainless steel, and special alloys.
Customized operation modes, including manual, pneumatic, electric, and hydraulic actuators.
Customized sealing structures for high temperature, high corrosion, and special working conditions.
Customized dimensions, appearance, logo marking, packaging, and technical documents.
Customized solutions for chemical, pharmaceutical, semiconductor, and other demanding applications.

Industry Certifications

Our Flange Fluorine-Lined Butterfly Valves are manufactured under strict quality management systems and comply with international valve industry standards. Available certifications include:

ISO 9001 Quality Management System Certification
CE Certification
API 609 Standards Compliance
API 598 Pressure Testing Standard
EN 12266 Testing Standard
Material Test Certificate (MTC)
Factory Inspection Report
Customized inspection and testing documents available upon request

Parameter Specifications

Parameter	Specification
Product Name	Flange Fluorine-Lined Butterfly Valve
Valve Type	Fluorine-Lined Butterfly Valve
Structure Type	Wafer / Flanged Butterfly Valve
Body Material	Carbon Steel / Stainless Steel / Customized Materials
Lining Material	FEP / PTFE / PFA Fluoropolymer
Disc Material	Fluorine-Lined Stainless Steel
Seat Material	PTFE / FEP / PFA
Nominal Size	DN25–DN1200 (1"–48")
Pressure Rating	PN10–PN16 / Class 150
Connection Type	Flange Connection
Flange Standard	ANSI / DIN / JIS / GB Standards
Operation Method	Manual / Pneumatic / Electric / Hydraulic
Applicable Temperature	-40°C to +180°C (Depending on Lining Material)
Applicable Medium	Strong Acids, Alkalis, Solvents, Corrosive Liquids
Sealing Performance	Bubble Tight Shut-Off
Leakage Standard	API 598 / EN 12266
Flow Control	Open / Close / Regulation
Installation Position	Horizontal / Vertical Pipeline Installation
Corrosion Resistance	Excellent Chemical Resistance
Maintenance	Low Maintenance Design
Service Life	Long-Term Reliable Operation

Industry Applications

The Flange Fluorine-Lined Butterfly Valve is widely used in industries requiring reliable shut-off control and excellent corrosion resistance.

Chemical Industry

Acid and alkali transportation systems
Chemical reaction pipelines
Corrosive liquid storage and processing equipment

Pharmaceutical Industry

High-purity chemical pipelines
Pharmaceutical production systems
Clean process applications

Petrochemical Industry

Solvent handling systems
Chemical refining processes
Corrosive medium control pipelines

Semiconductor & Electronics Industry

Ultra-pure chemical supply systems
Specialty chemical processing equipment

Water Treatment Industry

Industrial wastewater treatment
Chemical dosing systems
Corrosive fluid pipelines

Food & Beverage Industry

Cleaning and sterilization systems
Hygienic fluid control applications

Mining & Metallurgy Industry

Acid leaching systems
Chemical slurry transportation
Corrosive process pipelines

CUSTOMIZED SERVICE Customized Product

Material customization plan

Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.

Structural optimization design

For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.

Interface standard adaptation

Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.