GFT 9 PFA Transfer Molding Meets Precision Engineering

PFA Lined Swing Check Valve

Vibron9
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.

Key Specifications

Design Norm: DIN | ANSI
Lining: PFA Lining 3mm - 5mm thickness), PFA Conducting
Body: 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

Partner with GFT9

Global Reach

Based in Germany, delivering worldwide through our global network.

Manufacturer

Decades of experience in PFA lining & manufacturing

Dependable

Reliable Lead Time, routinely between 1-6 weeks.
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Core PFA Features

Corrosion Resistance

Delivers superior chemical resistance against diverse corrosive agents, extending equipment lifespan.

Low Friction / Non-Stick

Minimizes friction and buildup for smooth flow and reduced wear.

Electrical Insulation

Provides robust insulation for safe, reliable performance in critical applications.

Thermal Stability

Maintains consistent performance across extreme temperatures, reducing maintenance needs.

Swing Check Valve Leaflet Features

No spring or pin


eliminating potential corrosion or mechanical wear.

Non-adhesive lining


ideal for handling sticky or pure media.

Thick-walled
PFA Lining of min 3 mm (optional up to 5mm)

ensures safe handling of corrosive and slightly solids-containing media.

PTFE Retainer Ring


Option for PTFE solid retainer ring to enhance sealing properties.

Low-pressure drop


Enhanced design for improved flow efficiency

Our Swing Check Valve Leaflet Certificates

Safety Integrity Level

Safety Integrity Level

Learn More
Pressure Equipment Directive

Pressure Equipment Directive

Learn More

Vibron9 Measurements

Measurement Drawing

DIN Standards

Size A B C D E Pipe Min Pipe Max Opening
DN 40 33 mm 20 mm 35 mm 95 mm 70 mm 35 mm 46 mm 52°
DN 50 43 mm 30 mm 52 mm 110 mm 90 mm 46 mm 56 mm 52°
DN 80 46 mm 42 mm 64 mm 142 mm 124 mm 73 mm 82 mm 52°
DN 100 52 mm 65 mm 80 mm 180 mm 152 mm 95 mm 100 mm 60°
DN 150 56 mm 111 mm 128 mm 295 mm 260 mm 192 mm 195 mm 60°
DN 250 68 mm 184 mm 224 mm 348 mm 317 mm 242 mm 260 mm 52°
DN 300 78 mm 232 mm 272 mm 398 mm 367 mm 292 mm 310 mm 52°
DN 350 92 mm 252 mm 297 mm 426 mm 397 mm 315 mm 330 mm 48°
DN 400 102 mm 327 mm 370 mm 510 mm 470 mm 380 mm 390 mm 45°

ANSI Standards

Size A B C D E Pipe Min Pipe Max Opening
NPS 1 1/2" 33 mm 20 mm 35 mm 95 mm 70 mm 35 mm 46 mm 52°
NPS 2" 43 mm 30 mm 52 mm 110 mm 90 mm 46 mm 56 mm 52°
NPS 3" 46 mm 42 mm 64 mm 142 mm 124 mm 73 mm 82 mm 52°
NPS 4" 52 mm 65 mm 80 mm 180 mm 152 mm 95 mm 100 mm 60°
NPS 6" 56 mm 111 mm 128 mm 207 mm 145 mm 150 mm 150 mm 60°
NPS 8" 60 mm 133 mm 175 mm 295 mm 260 mm 192 mm 195 mm 60°
NPS 10" 68 mm 184 mm 224 mm 348 mm 317 mm 242 mm 260 mm 52°
NPS 12" 78 mm 232 mm 272 mm 298 mm 267 mm 292 mm 310 mm 52°
NPS 14" 92 mm 252 mm 297 mm 426 mm 397 mm 315 mm 330 mm 48°
NPS 16" 102 mm 327 mm 370 mm 510 mm 470 mm 380 mm 390 mm 45°

Vibron9 Materials

Materials Drawing
Pos. Item Material
1 Lined Body WCB, CF8 - PFA Lined
2 Disc WCB, CF8 - PFA Lined
3 Eye Bolt Stainless Steel

Pressure Temperature Diagram

Pressure-Temperature diagram

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.

Chemical Processing

Sulfuric acid dosing lines Superior acid resistance, leak-free containment

Petrochemical & Refining

Chemical injection skid backflow protection High-pressure durability, non-stick internals

Pharmaceutical & Biotech

Ultrapure water and buffer solution loops Contamination-free, easy validation

Pulp & Paper

Bleach and dye feed systems Abrasion resistance, smooth operation

Mining & Mineral Processing

Slurry transfer and process chemical lines Wear-resistant lining, low maintenance

Oil & Gas Production

Gas-lift and methanol injection circuits Temperature resilience, vacuum-tight seal

Water & Wastewater Treatment

Corrosive wastewater recirculation Chemically inert, long service intervals

Semiconductor Manufacturing

High-purity etchant delivery Ultra-low particle generation, non-contaminating

Interested in this product, questions or custom modifications?

Talk to our engineer or get a custom quote tailored to your application.

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+49 2152 9148591 | sales@gft9.shop