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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.
302 and 303 Flanged Diaphragm Seals
Unit of Measure
Items 302 and 303 Flanged Diaphragm Seals
102
102 Flanged Diaphragm Seal 		302 and 303 Flanged Diaphragm Seals
103
103 Flanged Diaphragm Seal with Flushing Port
Description N/A The Ashcroft® 102 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. N/A The Ashcroft® 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.
Brands N/A Ashcroft®
Process Connection Size N/A 1 in1/2 in1-1/2 in2 in3 in3/4 in
Process Connection Type N/A National Pipe Straight (NPS)
Instrument Connection Size N/A 1/2 in1/4 in
Instrument Connection Type N/A National Pipe Thread (NPT) Female
Typical Added Tolerance (±) N/A 0.5 %
Connection Style N/A Flanged N/A Flanged with Flushing Port
Flange Class N/A 150 300 600 900 1,500
Flange Ratings (Maximum Allowable Working Pressure (MAWP)) N/A Per American Society of Mechanical Engineers (ASME) B16.5
Key Features N/A
  • 316L stainless steel top housing (standard)
  • Wide selection of diaphragm and lower housing materials
  • Diaphragm threaded to top housing
 		N/A
  • 316L stainless steel top housing (standard)
  • Wide selection of diaphragm and lower housing materials
  • Diaphragm threaded to top housing
  • Flush port provides easy cleaning/flushing due to process media prone to clogging
Applications N/A 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