1) Snamprogetti® is a registered trademark of Saipem S.p.a.
The model 990.49 diaphragm seal is designed to be screwed into a threaded flange. Due to the extended diaphragm, the diaphragm seal can be used at thick-walled or insulated locations in pipeline and vessel construction.
For this model, WIKA offers a special steel alloy which is primarily used in the fertiliser industry.