Flange-type per EN and ASME, flush-mounted separating diaphragm

Type series DA1120

Flange-type per EN and ASME, flush-mounted separating diaphragm - DA1120


  • Flush-mounted separating diaphragm of stainless steel or special material
  • Volume optimised diaphragm base
  • Alternative with reinforced diaphragm in LTC technology (reduced temperature influence)
  • System fillings for different applications
  • Measuring device connection: directly welded, directly screwed, with temperature decoupler, with capillary


  • Material certificate acc. to EN 10204-3.1

Technical Data

Constructional design / case
Basic body: Volume reduced diaphragm base
  Material: stainless steel mat.-no. 1.4404/1.4435 (316L)
Diaphragm: Flush-mounted diaphragm, laser welded; alternative with reduced temperature influence and reinforced diaphragm in LTC technology. (LTC=Low Temperature Coefficient)
  Further details see General technical information TA_031.
Material wetted parts: Diaphragm: See order details
  Basic body: Stainless steel mat.-no. 1.4404/1.4435 (316L)
Process connection
Design: Flange connection per EN 1092-1 and ASME B16.5
Further designs upon request.
Nominal pressure/Nominal width: See table
The sealing is not included in the scope of delivery.
System filling
See order details; further fillings upon request.
Further details about pressure transmission fluids see general technical information TA_038.
Sealing surfaces
- EN 1092-1, model B1, B2, C, D, E
- ASME B 16.5, RFSF, RF 125-250AA, RJF
Special material surface upon request.
Measuring device connection
See order details.
Material stainless steel mat.-no. 1.4301 (304)
Temperature error
In order to optimise the system we provide a detailed error calculation upon request.
See table.
Further information about diaphragm seals see general technical information TA_031.
Flame arrester MF21xx for connection of measuring devices to zone 0 see data sheet D6-025.
Type series
DA1, DA2, DA4, DA3, DA7, DA5, DA51, DA6


  • D5-030

    Data Sheet

  • TA_038

    Technical Information - Pressure Transmission Fluids