

Diaphragm Valve
PTFE lined diaphragm valves for corrosive chemical and water treatment applications.
A flexible diaphragm separates the operating mechanism from the process medium, allowing the valve to control or isolate flow without conventional stem contact with the fluid. African Valve, a Diaphragm Valves manufacturer in Morocco provides valves that are particularly suited to corrosive, contaminated and abrasive media where minimizing fluid exposure to internal components is important.
Diaphragm Valve Features
Flexible diaphragm provides process-media isolation
Weir and straight-through body configurations
No conventional stem packing in the process flow path
Suitable for corrosive and contaminated fluids
Low internal dead volume in selected designs
Soft-lined and unlined construction options
Throttling and isolation capability
Replaceable diaphragm for maintenance
Technical Specifications
Parameter | Specification |
Valve Type | Weir / Straight-Through |
Size Range | DN15–DN300, depending on design |
Pressure Rating | PN10–PN16 / Application Specific |
Body | Ductile Iron / Cast Iron / Carbon Steel / Stainless Steel |
Lining | PTFE / PFA / Rubber / Application-Specific |
Diaphragm | EPDM / PTFE / NBR / Application-Specific |
Bonnet | Cast / Forged |
End Connection | Flanged / Threaded / Welded |
Operation | Handwheel / Pneumatic / Electric |
Flow Direction | Bidirectional, depending on design |
Standards | EN 13397 / ASME B16.34 / Applicable Standard |
Applications
Diaphragm valves are used in chemical processing, water treatment, wastewater treatment, mining, corrosive-fluid handling and industrial process systems where fluid compatibility and process isolation are important.
Materials
Body and lining materials are selected according to the process medium. Options can include ductile iron, cast iron, carbon steel, stainless steel, PTFE-lined and other corrosion-resistant constructions.



