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Metal Diaphragm Valves

Areas of application

Depending on design, these valves are specifically suitable for highly-pure to heavily contaminated liquid and gaseous, inert and corrosive media. Just as classical control valves, diaphragm valves also have good control properties, especially for media which are contaminated or contain particles. The major areas of use are processes in a vast range of different industrial applications.

Operating pressure 

0 – 10 bar

Operating temperature 

10 – 180°C

Nominal size 

DN 4 – 300

Body materials 

Cast iron, S.G. iron, cast steel, brass, stainless steel (investment casting, forged bodies, block material)
Lined with hard and soft rubber, PP, PFA, PVDF, glass, halar etc.

Seal materials 

CSM (Hypalon), NBR (Perbunan), FPM (fluorine rubber), IIR (butyl), CR (neoprene), EPDM, EPDM/PTFE (laminated and loose, concave and convex)

Connection types 

Butt-weld spigots, clamps and union ends, threaded sockets, threaded spigots, flanges
Connection types are generally available with different standards and norms (DIN, ANSI, BS, JIS etc.)


Manually operated, pneumatically or hydraulically operated or motorized

Body configuration 

2/2 way body (2/2 way valve), T valve (3/2 way valve), tank valve (B600), multi-port valve (M600)


Surface finishes for stainless steel bodies down to 0.25 μm Ra and electropolished are available