COMPANY HEADER
The Ashcroft® 702 and 703 high-displacement diaphragm seals are used with low differential pressure gauges rated for elevated static pressures up to 750 psi. Used to ensure material compatibility, they are also applied when process media exhibit pulsation or the potential to clog an instrument connection. An ideal product for satisfying low pressure measurement needs.
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702 and 703 Flanged High Displacement Diaphragm Seals

702 Flanged High Displacement Diaphragm Seal
702 and 703 Flanged High Displacement Diaphragm Seals

703 Flanged High Displacement Diaphragm Seal with Flushing Port
Description N/A The Ashcroft® 702 high-displacement diaphragm seals are used with low differential pressure gauges rated for elevated static pressures up to 750 psi. Used to ensure material compatibility, they are also applied when process media exhibit pulsation or the potential to clog an instrument connection. An ideal product for satisfying low pressure measurement needs. N/A The Ashcroft® 703 high-displacement diaphragm seals are used with low differential pressure gauges rated for elevated static pressures up to 750 psi. Used to ensure material compatibility, they are also applied when process media exhibit pulsation or the potential to clog an instrument connection. An ideal product for satisfying low pressure measurement needs.
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
Flange Ratings (Maximum Allowable Working Pressure (MAWP)) N/A Per American Society of Mechanical Engineers (ASME) B16.5
Key Features N/A
  • Wide selection of diaphragm and lower housing materials
  • Enlarged welded diaphragm; high displacement allows high sensitivity to pressure fluctuations
 		N/A
  • Wide selection of diaphragm and lower housing materials
  • Enlarged welded diaphragm; high displacement allows high sensitivity to pressure fluctuations
  • Flushing 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 Racking
NACE Compliant Processes (Sour Gas Separation)
Bioassay and Biocides