PFA Swing Check Valve (DIN-ANSI)

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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

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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 Tabular Overview

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
1 5

Find all our Swing Check Valves & Request a Quote

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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Technical Specifications

Dimensional Measurements

Size A2 B (mm) C (mm) D (mm) E (mm) Inner Pipe Min Inner Pipe Max Opening Max
DN 40 33mm 20mm 35mm 95mm 70mm 35mm 46mm 52°
DN 50 43mm 30mm 52mm 110mm 90mm 46mm 56mm 52°
DN 80 46mm 42mm 64mm 142mm 124mm 73mm 82mm 52°
DN 100 52mm 65mm 80mm 180mm 152mm 95mm 100mm 60°
DN 150 56mm 111mm 128mm 295mm 260mm 192mm 195mm 60°
DN 250 68mm 184mm 224mm 348mm 317mm 242mm 260mm 52°
DN 300 78mm 232mm 272mm 398mm 367mm 292mm 310mm 52°
DN 350 92mm 252mm 297mm 426mm 397mm 315mm 330mm 48°
DN 400 102mm 327mm 370mm 510mm 470mm 380mm 390mm 45°
Size A2 B (mm) C (mm) D (mm) E (mm) Inner Pipe Min Inner Pipe Max Opening Max
NPS 1 1/2" 33mm 20mm 35mm 95mm 70mm 35mm 46mm 52°
NPS 2" 43mm 30mm 52mm 110mm 90mm 46mm 56mm 52°
NPS 3" 46mm 42mm 64mm 142mm 124mm 73mm 82mm 52°
NPS 4" 52mm 65mm 80mm 180mm 152mm 95mm 100mm 60°
NPS 6" 56mm 111mm 128mm 207mm 145mm 150mm 150mm 60°
NPS 8" 60mm 133mm 175mm 295mm 260mm 192mm 195mm 60°
NPS 10" 68mm 184mm 224mm 348mm 317mm 242mm 260mm 52°
NPS 12" 78mm 232mm 272mm 298mm 267mm 292mm 310mm 52°
NPS 14" 92mm 252mm 297mm 426mm 397mm 315mm 330mm 48°
NPS 16" 102mm 327mm 370mm 510mm 470mm 380mm 390mm 45°

Materials Table & File

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

P‑T Diagram

P-T-Diagram for the Swing Check Valve

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