102-103 Flanged Diaphragm Seals from Ashcroft

102-103 Flanged Diaphragm Seals from Ashcroft
The Ashcroft® 102 and 103 flanged diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, they are also applied when media exhibit high temperature or the potential to clog an instrument connection. Ideal for satisfying many challenging applications.


102-103 Flanged Diaphragm Seals Features:

  • 316L stainless steel top housing (standard)
  • Wide selection of diaphragm and lower housing materials
  • Diaphragm threaded to top housing
  • Flush port (model 103) provides easy cleaning / flushing due to process media prone to clogging



102-103 Flanged Diaphragm Seals Applications:

  • Process Market:
    • Oil and Gas
    • Refineries
    • Chemical and Petrochemical
    • Water and Wastewater
  • Process Applications::
    • Oil and Gas Fracking
    • NACE Compliant Processes (Sour Gas Separation)
    • Biogas and Biodiesel



102-103 Flanged Diaphragm Seals Specifications:

Process Connection Size½, ¾, 1, 1½, 2 or 3 NPS
Instrument Connection¼ or ½ NPT Female
Added Tolerance±0.5% typical
Connection Style
  • 102: Flange
  • 103: Flange with flushing port
Flange150, 300, 600, 900 & 1,500 class
Flange Ratings (MAWP)Per ASME B16.5


Download Ashcroft 102-103 Flanged Diaphragm Seals Datasheet


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