GFT 9 PFA Transfer Molding Meets Precision Engineering

PFA Lined Ball Check Valve

Prohibron9
The Prohibron9 Ball Check Valve offers secure, maintenance-friendly backflow protection for pipelines transporting corrosive, pure, or vaporous media. Engineered with a virgin PFA lining, it provides superior chemical resistance, minimal permeation, and vacuum-tight sealing. Its pressure-resistant metal body ensures durability in high-pressure systems, while the valve’s center-guided ball design allows automatic closing in both vertical and horizontal installations (with defined minimum flow conditions). With only one moving part and no need for external actuation, the Prohibron9 delivers long service life with minimal maintenance. Optional non-stick linings and custom coatings further enhance adaptability, making it the optimal solution where safety, cleanliness, and reliability are essential. The Prohibron9 stands as a key component in aggressive media systems where conventional materials like stainless steel or plastics fall short.

Key Specifications

Design Norm: DIN/ISO | ANSI
Lining: PFA, PFA/AS, FEP, PP, PVDF
Body: 1.0619 or 1.4308/1.4408/1.4409 | A216/WCB,CF8/CF8M/CF3M
Pressure Range: Vacuum to 10 bar, according to pressure-temperature diagram
Temperature Range: -10°C up to 200°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.

Digital Friendly

Quote, buy & manage documentation in one place.
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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.

बॉल चेक वाल्व Features

Vertical installation & Horizontal Installation


for uncomplicated installation in all environments (min. 1 bar differential pressure required for horizontal installation).

Vertical Installation (up to 60°)


valve closes automatically due to center guided ball

Horizontal Installation (90° to 60°)


valve closes automatically, if backflow is 1,5 - 2,5m/s (water based)

Leakage Class D for Enhanced Process Safety


controlled and minimal leakage (<0,1% of valve capacity).

Low Maintenance


due to only a single moving part

Our बॉल चेक वाल्व Certificates

Pressure Equipment Directive

Pressure Equipment Directive

Learn More
Safety Integrity Level

Safety Integrity Level

Learn More

Prohibron9 Materials

Materials Drawing
Pos. Item Material
1 Body ASTM A216 WCB (1.0619), CF8-M (1.4408)
2 Lining PFA, PFA/AS, FEP, PVDF
3 Ball PTFE massive or hollow
5 Screws A2/A4-70 Stainless Steel
6 Nuts A2/A4-70 Stainless Steel

Prohibron9 Measurements

Measurement Drawing

DIN Standards

Size L H ød øk øD Bolting Weight
DN 15 130 मि॰मी॰ 45 मि॰मी॰ 65 मि॰मी॰ 95 मि॰मी॰ 4 x 14 (M12) 8 कि॰ग्रा॰
DN 25 160 मि॰मी॰ 68 मि॰मी॰ 85 मि॰मी॰ 115 मि॰मी॰ 4 x 14 (M12) 5.6 कि॰ग्रा॰
DN 40 200 मि॰मी॰ 88 मि॰मी॰ 110 मि॰मी॰ 150 मि॰मी॰ 4 x 18 (M16) 9.7 कि॰ग्रा॰
DN 50 230 मि॰मी॰ 102 मि॰मी॰ 125 मि॰मी॰ 165 मि॰मी॰ 4 x 18 (M16) 13 कि॰ग्रा॰
DN 80 310 मि॰मी॰ 138 मि॰मी॰ 160 मि॰मी॰ 200 मि॰मी॰ 8 x 18 (M16) 27 कि॰ग्रा॰
DN 100 350 मि॰मी॰ 158 मि॰मी॰ 180 मि॰मी॰ 220 मि॰मी॰ 8 x 18 (M16) 35 कि॰ग्रा॰
DN 150 480 मि॰मी॰ 212 मि॰मी॰ 240 मि॰मी॰ 285 मि॰मी॰ 8 x 22 (M20) 74.5 कि॰ग्रा॰
DN 200 600 मि॰मी॰ 268 मि॰मी॰ 295 मि॰मी॰ 340 मि॰मी॰ 12 x 22 (M20) 200 कि॰ग्रा॰

ANSI Standards

Size L H ød øk øD Bolting Weight
NPS 1" 127 मि॰मी॰ 50.8 मि॰मी॰ 79.4 मि॰मी॰ 108 मि॰मी॰ 4 x 15.9 4.9 कि॰ग्रा॰
NPS 1½" 165 मि॰मी॰ 73 मि॰मी॰ 98.4 मि॰मी॰ 127 मि॰मी॰ 4 x 15.9 8.9 कि॰ग्रा॰
NPS 2" 178 मि॰मी॰ 92.1 मि॰मी॰ 121 मि॰मी॰ 152.4 मि॰मी॰ 4 x 19 12 कि॰ग्रा॰
NPS 3" 203 मि॰मी॰ 127 मि॰मी॰ 152.4 मि॰मी॰ 190.5 मि॰मी॰ 4 x 19 26 कि॰ग्रा॰
NPS 4" 229 मि॰मी॰ 157.2 मि॰मी॰ 190 मि॰मी॰ 228.6 मि॰मी॰ 8 x 19 35 कि॰ग्रा॰
NPS 6" 216 मि॰मी॰ 241 मि॰मी॰ 279 मि॰मी॰ 8 x 22.2 74.5 कि॰ग्रा॰
NPS 8" 457 मि॰मी॰ 269.9 मि॰मी॰ 330.2 मि॰मी॰ 381 मि॰मी॰ 12 x 25.4 155.5 कि॰ग्रा॰

Pressure Temperature Diagram

Pressure-Temperature diagram

Industry Applications

PFA-lined components are essential in industries that handle aggressive or high-purity fluids. Thanks to PFA’s exceptional chemical resistance, the Prohibron9 can be used with strong acids, bases, solvents, and even permeating agents without degrading. Its high thermal stability, non-stick surface, and low permeability enable safe and efficient operation even in high-temperature and pressure conditions, reducing product contamination and material wear. These properties make PFA-lined ball check valves especially suitable for industries where fluid purity, corrosion resistance, and low maintenance are vital. From chemical plants to pharmaceutical production, the Prohibron9 ensures reliable backflow prevention under chemically and mechanically demanding conditions.

Chemical Processing

Application: Backflow protection in acid dosing lines for sulfuric or hydrochloric acid Need: High chemical resistance, minimal leakage, and vacuum tightness

Fine Chemicals

Application: Safe transfer of high-purity solvents and reactive agents Need: Non-stick PFA surface to avoid contamination and degradation

Pharmaceuticals & Biotechnology

Application: Prevention of reverse flow in ultrapure water and buffer solution lines Need: Contamination-free, non-metallic fluid contact and excellent cleanability

Petrochemical Industry

Application: Non-return valve for chemical injection systems Need: Durability under high-pressure systems and reliable sealing

Pulp and Paper

Application: Reverse flow protection in bleach or dye lines Need: Corrosion-resistant internals and low-maintenance performance

Mining and Metallurgy

Application: Check valve for process slurries with chemical additives Need: Tough, corrosion-proof design with optional non-adhesive lining for solids-containing media

Water & Wastewater Treatment

Application: Preventing contamination in chemical dosing or neutralization systems Need: Corrosion resistance, non-clogging design, and easy service access

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