These types of diaphragm seals are designed for either direct mounting on the process flange or by clamping the seal between process flange and a cover flange. They are available in all kind of international flange standards, ASME B16.5, EN1092-1, API 6A ISO 10423 or JIS B2220.
The FSO construction has the weld seal body-diaphragm as a wetted part, therefore diaphragm materials are mostly chosen the same as the body (disc) material. The FSO is recommended when special flange grades are required.
Sanitary seals are designed for pressure, level and flow measurements in food and pharmaceutical industries where the formation of bacteria needs to be prevented by reducing or eliminating blind spaces where process product could remain and thus creating impurities, bacteria by e.g. fermentation. As such these seals allow for easy cleaning by means of either threaded or clamp quick couplings.
The selection of a fill fluid for a diaphragm seal application requires a careful review of the application conditions. The fill fluid characteristics determine to a large extent the diaphragm seal system performance in terms of response time and temperature effect. Several fill fluid characteristics need to be taken into account to make the appropriate selection of the fill fluid.
7. Flush rings and flanges, reducer flanges, and accessories
The flushing flange or ring is used for flushing solution combined with diaphragm seals. This type of flushing flange or ring is clamped between process nozzle and diaphragm seal. The reducer flange is used to mount a larger diaphragm seal to a smaller process connection. This type of reducer flange is clamped between process nozzle and diaphragm seal.
Diaphragm Seal Accessories are carefully designed to optimise the use of the Diaphragm Seal in your process conditions, or to ease the installation and protect it against damaging during installation.
Diaphragm Seal Solutions are specifically designed for more extreme process conditions, such as high temperatures or very low pressures. There are also specific solutions to improve the overal performance or durability of the Diaphragm Seal.