DN 15 – DN 200 | NPS ½ˮ – 8ˮ
The SDV diaphragm valve is suitable for shutting off, regulating, and throttling corrosive process media in liquid or gaseous form. Its fully gas-tight design and proven diaphragm technology ensure reliable operation in demanding applications.
The SDV diaphragm valve stands out for its modular design and offers flexible configurations for various piping systems. The body and top sections are available either in cast steel 1.0619 (WCB) with a RAL 5005 Signal Blue finish or in cast stainless steel 1.4408 (CF-8M). PFA and conductive PFA-AS linings are available for use with particularly demanding media.
The PTFE/EPDM diaphragm is designed to ensure that the mechanical components remain reliably isolated from the process medium. An integrated force limiter protects the diaphragm from excessive stress and cold flow. The stem protection simultaneously reduces the effects of atmospheric corrosion and contributes to the valve’s long service life.
For easy operation and monitoring, the valve features a highly visible yellow position indicator. The maintenance-friendly design also allows for easy replacement of parts directly on site. The standard handwheel actuation can be supplemented with appropriate actuators and control elements depending on the application.
| Design | DIN | ANSI |
| Nominal Sizes | DN 15 – DN 200 | NPS ½" – 8" |
| Flanges | EN 1092-1 B1 PN 16 / PN 40 |
ASME B16.5 RF CL 150 |
| Overall Length | EN 558-1 Series 1 | ASME B16.10 |
| Housing |
Cast steel 1.0619, RAL 5005 |
ASTM A216 WCB, signal blue ASTM A351 CF8M |
| Lining | PFA, PFA-AS (conductive) | PFA, PFA-AS (conductive) |
| Diaphragm | PTFE, PTFE-AS (conductive) | PTFE, PTFE-AS (conductive) |
