GFT9 | PFA Lined Swing Check Valve | Corrosion Resistant Backflow Control

Order Swing Check Valve | DIN-ANSI | Corrosion Resistant Backflow Control

Reliable Backflow Protection for Corrosive and High-Pressure Systems

The Vibron9 Swing Check Valve combines a pressure-resistant cast-metal housing with a thick-walled, mechanically anchored PFA lining (3–5 mm) to prevent backflow of aggressive liquids, gases, and vapors. Its center-guided ball design closes automatically in vertical and horizontal service, requiring no springs or external actuation. With a vacuum-proof seal and Class D leakage control (<0.1 %), it offers reliable, low-maintenance performance where stainless steel or plastics would fail.

Beyond its core non-return functionality, Vibron9’s PFA lining ensures extremely low friction and near-zero permeation, making it suitable for fluids from sulfuric acid to slurry suspensions. Optional non-adhesive coatings and retainer rings further enhance its adaptability. Whether you need ultra-pure media integrity or rugged durability in high-pressure chemical loops, Vibron9 delivers both safety and longevity.

About GFT9 – Your Trusted PFA Specialist

Custom Manufacturing Excellence:
Our products undergo rigorous testing and comply with international quality standards, reinforcing our commitment to excellence and instilling confidence in our clients.
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Global Supply Network & Streamlined Ordering:
Leveraging an extensive international network, we ensure reliable delivery and consistent product availability, while our user-friendly, integrated ordering system simplifies procurement for our clients.
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Dedicated After-Sales Support:
Our expert team provides ongoing technical assistance and exceptional customer service, ensuring long-term satisfaction and the operational success of your installations.
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Quality Certifications & Adherence to Industry Standards:
Our products undergo rigorous testing and comply with international quality standards, reinforcing our commitment to excellence and instilling confidence in our clients.
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Proven Performance

Industry Applications

PFA (perfluoroalkoxy) is prized for its outstanding corrosion resistance, wide temperature tolerance, and non-stick surface—essential wherever fluid purity, safety, and uptime cannot be compromised. The Vibron9 leverages these properties to outperform conventional non-lined or metal check valves:

Corrosion Resistance: Handles strong acids, bases, solvents, and permeating agents without degradation.

Thermal Stability: Operates reliably from –40 °C to +150 °C, covering most industrial process ranges.

Non-Stick Surface: Prevents buildup of viscous or sticky media, ensuring prompt valve action.

Vacuum-Tight Seal: Mechanical clamping of the PFA liner guarantees leak-free performance even under negative pressure.

These characteristics make Vibron9 the go-to check valve for any application demanding both backflow prevention and stringent chemical compatibility.

Looking for application guidance?

Swing Check Valve Summary

Parameter	Value
Name	Vibron9
Design Norm	DIN \| ANSI
Size	DN 40-400 \| NPS 1 ½-16
Flange Dimensions	DIN EN 1092-1, PN 16 \| ANSI B 16.5 Cl. 150/B16.42
Face-Face-Dimensions	DIN EN 558-1 Row 20, ISO 5752 \| API 609/BS 5155
Lining Options	PFA Lining 3mm - 5mm thickness), PFA Conducting
Body Materials	1.0619 or 1.4308/1.4408/1.4409 \| A216/WCB,CF8/CF8M/CF3M
Pressure Range	0.1 mbar vacuum to 16 bar
Temperature Range	-40°C up to +150°C
Leakage Rate	Leakage Rate D
Custom Options	PTFE solid retainer ring
Quality Control	Body 15bar, Back Seat 2bar, Spark Test 15kV DC

Request a Quote Easily for Our PFA-Lined Swing Check Valve

Filter the product grid below by size, lining, and body material to find your ideal product. Once selected, add it to your cart to request a free, non-binding quote—adding to your cart does not commit you to a purchase. We’ll promptly provide pricing and estimated delivery times.

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