Hengesbach In-Line Seals DM-769

Hengesbach is a company from Deutschland. And Hengesbach develops, manufactures and distributes innovative measuring technology for applications in production processes where functionality, reliability and accuracy of the instruments are of highest priority even under extreme process conditions. This modern understanding of value creation of a medium-sized company already has a long tradition with us. Based on many years of experience, we know that the success and strategic security of the company is the result of a lasting and uncompromising appreciation of all involved stakeholders – and this in a global context.

Hengesbach develop and produce measuring instruments with a clear focus on the worldwide active dairy, food and beverage industry. Especially within these applications, highest hygienic requirements for the production of safe products are essential prerequisites. The product of Hengesbach Such as level measuring, flow measuring, pressure measuring, temperature measuring, analytical measurement, evaluation. One of the product that come from Hengesbach is pressure measuring.

In-Line Seals DM-769

For application-orientated solutions in pressure measuring technology, Hengesbach offers a wide range of mechanical devices and electronic pressure and differential pressure transducers based on modern sensor technology, as well as specific diaphragm seals with corresponding accessories.

In-Line Seals DM-769 is a product from hengesbach. DM-769 is a product that comes from the categories of pressure measuring. This product is a diaphragm tube of stainless steel. And mounting to manometer, pressure switches and pressure transmitter.


  • diaphragm tube of stainless steel 1.4435 (316L)
  • flange- and cellular type for direct integration into the process pipe
  • measuring of highly viscous media, dead-zone free
  • mounting to manometer, pressure switches and pressure transmitter
  • special fitting length optional possible
  • residues-free cleaning of measuring point


General information

Process connection NormSealing Face  Nom. SizeModel
 Cellular type:DIN EN  PN 16 – 100  
    DIN EN 1092-1   
    Form B2,   
    PN 160-400:   
    DIN 2526   
    Form E DN 20...100RDM 7690
    16.5 RF DN 1"...4"RDM 7695
 Flange type:DIN ENDIN EN 1092-1    
    Form B1 DN20...100RDM 7690.1
    16.5 RF DN 1"...4"RDM 7695.1
Basic bodystainless steel 1.4435 (316L)      
Separating diaphragmstainless steel 1.4435 (316L), other materials on request      
Nominal pressurePN 16 to 400 bar und 150 to 2500 lb/sg.in., dependent on model and size, other nominal      
Minimum pressure rangePressure gauge: 0-1 bar or 0-2.5 bar to PN, dependent on model and nominal size      
Instrument connectionstandard: G ½ (½" BSP), DIN EN 837-1      
Filling liquidsilikon oil (FA1), others filling liquid on request      
Separating diaphragmstainless steel 1.4435 (316L), electropolished      
Installation- via cooling element      
 - via capillary line (please specify the length by ordering)      
Certificatesmaterial certificate 3.1, EN 10204 for medium contacted parts      

Download Data Sheet: In-Line Seals DM-769

Ref: hengesbach.com