GFT 9
PFA Transfer Molding Meets Precision Engineering
PFA Lined Diaphragm Valve

Key Specifications
Design Norm: DIN/ISO | ANSI
Lining: PFA, PFA/AS, PVDF
Body: WCB/PFA, CF8/ SS 304 , 1.4401
Pressure Range: Depending on Size (see P-T Diagram below)
Partner with GFT9
Global Reach
Manufacturer
Dependable
Digital Friendly
Core PFA Features
Corrosion Resistance
Low Friction / Non-Stick
Electrical Insulation
Thermal Stability
Diaphragm Valve Leaflet Features
Our Diaphragm Valve Leaflet Certificates
Membron9 Measurements
DIN Standards
Size | L | H | ød | øk | øD | Bolting | Weight |
---|---|---|---|---|---|---|---|
DN 15 | 130 mm | 45 mm | 65 mm | 95 mm | 4 x 14 (M12) | ||
DN 20 | 150 mm | 58 mm | 75 mm | 105 mm | 4 x 14 (M12) | ||
DN 25 | 160 mm | 68 mm | 85 mm | 115 mm | 4 x 14 (M12) | ||
DN 40 | 200 mm | 88 mm | 110 mm | 150 mm | 4 x 18 (M16) | ||
DN 50 | 230 mm | 102 mm | 125 mm | 165 mm | 4 x 18 (M16) | ||
DN 65 | 290 mm | 122 mm | 145 mm | 185 mm | 4 x 18 (M16) | ||
DN 80 | 310 mm | 138 mm | 160 mm | 200 mm | 8 x 18 (M16) | ||
DN 100 | 350 mm | 158 mm | 180 mm | 220 mm | 8 x 18 (M16) | ||
DN 125 | 400 mm | 188 mm | 210 mm | 250 mm | 8 x 18 (M16) | ||
DN 150 | 480 mm | 212 mm | 240 mm | 285 mm | 8 x 22 (M20) |
ANSI Standards
Size | L | H | ød | øk | øD | Bolting | Weight |
---|---|---|---|---|---|---|---|
NPS ¾" | 117 mm | 42,9 mm | 69,8 mm | 98,4 mm | 4 x 15.9 | ||
NPS ½" | 108 mm | 34,9 mm | 60,3 mm | 88,9 mm | 4 x 15.9 | ||
NPS 1" | 127 mm | 50,8 mm | 79,4 mm | 108 mm | 4 x 15.9 | ||
NPS 1½" | 165 mm | 73 mm | 98,4 mm | 127 mm | 4 x 15.9 | ||
NPS 2" | 178 mm | 92,1 mm | 121 mm | 152,4 mm | 4 x 19 | ||
NPS 2½" | 190 mm | 104,8 mm | 139,7 mm | 177,8 mm | 4 x 19 | ||
NPS 3" | 203 mm | 127 mm | 152,4 mm | 190,5 mm | 4 x 19 | ||
NPS 4" | 229 mm | 157,2 mm | 190 mm | 228,6 mm | 8 x 19 | ||
NPS 6" | 394 mm | 216 mm | 241 mm | 279 mm | 8 x 22.2 |
Membron9 Materials

Pos. | Item | Material |
---|---|---|
1 | Lined Body | WCB, CF8 - PFA Lined |
2 | Bonnet | WCB, CF8 |
3 | Spindle | SS316 |
4 | Compressor Pin Type | WCB, CF8 |
5 | Handwheel | CF8 |
6 | Opening Indicator Sleeve | HDPE |
7 | Diaphragm (pin Type) | PTFE Backed with EPDM |
8 | Compression Spring | Stainless Steel |
9 | Dowell Pin Spring | Steel |
10 | Stud | Stainless Steel |
11 | Nut | Stainless Steel |
12 | Plain Washer | Stainless Steel |
Pressure Temperature Diagram

Industry Applications
The Membron9 PFA-lined diaphragm valve is engineered to excel in industries that demand precise flow control of corrosive chemicals at temperatures up to 180°C. Its robust construction and superior PFA lining ensure exceptional chemical resistance and durability, making it the preferred choice for applications requiring reliable performance under harsh conditions.
Chemical & Fine Chemical
Effectively manages aggressive acids, caustics, and solvents, ensuring safety and longevity in chemical processing environments
Pharmaceutical & Biopharmaceutical
Maintains purity and prevents contamination when handling ultra-pure media, aligning with stringent industry standards.
Biodiesel Production
Withstands the corrosive nature of biodiesel intermediates, providing reliable performance in renewable energy processes.
Battery Production
Handles corrosive electrolytes safely, contributing to the efficiency and safety of battery manufacturing operations.
Mining & Mineral Processing
Resists wear and corrosion from abrasive slurries and harsh chemicals, ensuring durability in mineral extraction and processing.
Food & Beverage Industry
The Clean Room Edition meets FDA compliance for food-grade processes, ensuring safe and hygienic handling of consumable products.
Electricity Production
Operates reliably in power plants, managing various chemicals used in electricity generation processes.
Water Treatment
Ensures purity and prevents contamination in water treatment and generation facilities.
Oil & Gas Extraction and Refining
Withstands the harsh conditions of oil and gas processing, handling corrosive substances with ease.
Semiconductor Industry
Provides ultra-pure media handling capabilities essential for semiconductor manufacturing processes.
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