FCT PTFE lined diaphragm valves feature a weir-type or straight-through body with full PTFE or PFA lining and a flexible PTFE diaphragm that isolates the valve body and actuator from the process fluid. This design guarantees leak-free, metal-free flow paths—especially important for ultra-clean or chemically aggressive media.
They provide both on/off and throttling service, while their cavity-free interior reduces dead zones and contamination risks.
Design Standards: DIN 3356, ISO 16138, ASME B16.34
Size Range: ½” to 12” (DN15 to DN300)
Pressure Ratings: PN 10 / ANSI 150
Body Materials: Cast Iron, Ductile Iron, Stainless Steel
Lining Materials: PTFE (optional PFA, FEP)
Diaphragm Materials: PTFE / PTFE + EPDM
End Connections: Flanged, Tri-Clamp, Threaded, Welded
Temperature Range: -10°C to +180°C
Operation: Manual Handwheel, Pneumatic, Electric
Leakage Class: Bubble-tight (Class VI)
No metal contact with media — ideal for pure and corrosive fluids
PTFE diaphragm and liner offer superior chemical resistance
Excellent for slurry, viscous, or abrasive flow
Self-draining and dead zone-free interior
Low maintenance and long diaphragm life
Clean, sanitary design available (FDA compliant)
Chemical dosing and transfer systems
Pharmaceutical and biotech production lines
Food and beverage processing
Water purification and deionization
Semiconductor manufacturing
Laboratory and cleanroom environments