Diaphragm seal with threaded connection

Applications

● For aggressive, hot, corrosive, environmentally hazardous or toxic media

● Oil and gas industry, chemical and petrochemical industries

● Water treatment

● Versatile in application

Special features

● Process connection with thread

● Version with internal diaphragm, diaphragm seal parts fully welded

● Large selection of process connections and materials

● Flushing connections optionally available

● High pressures up to 1,000 bar [14,500 psi] can be achieved

Specification

Process connection

Other process connections on request

Permissible nominal pressure (PN)

The permissible nominal pressure (PN) of the diaphragm seal system results from the selected material and depends on the effective diaphragm diameter of the diaphragm seal (see table below). In addition, the permissible pressure/temperature rating must be taken into account. For the relevant pressure-temperature diagrams.

The maximum permissible process temperature of the diaphragm seal system is also limited by the joining method, by the system fill fluid and by the measuring instrument. 

Pressure-temperature diagram

Effective diameter of diaphragm Mb 52 mm

Pressure-temperature diagram

Effective diameter of diaphragm Mb 40 mm

Pressure-temperature diagram

Effective diameter of diaphragm Mb 29 mm

Pressure-temperature diagram

Effective diameter of diaphragm Mb 22 mm

Diaphragm seal, model DS551.34

Effective diameter of diaphragm Mb 52 mm

Diaphragm seal, model DS551 .34

Effective diameter of diaphragm Mb 40 mm

Diaphragm seal, model DS551.34

Effective diameter of diaphragm Mb 29 mm

Diaphragm seal, model DS551 .34

Effective diameter of diaphragm Mb 22 mm

Diaphragm seal:

Diaphragm seal model / Process connection (process connection standard, thread, nominal pressure rating) / Material (upper body, diaphragm, lower body) / Flushing connection (plug screw) / Connection to the measuring instrument / Level of cleanliness of wetted parts / Origin of wetted parts / Certificates

Diaphragm seal system:

Diaphragm seal model / Process connection (process connection standard, thread, nominal pressure rating) / Material (upper body, diaphragm, lower body) / Flushing connection (plug screw) / Pressure measuring instrument model (per data sheet) / Mounting (direct mounting, cooling element, capillary) / Min. and max. process temperature / Min. and max. ambient temperature / Vacuum service / Pressure transmission medium / Certificates / Height difference / Level of cleanliness of wetted parts / Origin of wetted parts / Instrument mounting bracket