Ashcroft, Inc. - 402 and 403 Flanged All-Welded Diaphragm Seals

Unit of Measure

Items	402 402 Flanged All-Welded Diaphragm Seal	403 403 Flanged All-Welded Diaphragm Seal with Flushing Port
Description	N/A The Ashcroft® 402 flanged all-weld diaphragm seals protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit high temperature, pulsation or the potential to clog an instrument connection. An ideal selection for applications requiring minimal potential leak paths.	N/A The Ashcroft® 403 flanged all-weld diaphragm seals protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit high temperature, pulsation or the potential to clog an instrument connection. An ideal selection for applications requiring minimal potential leak paths.
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 Wide selection of diaphragm and lower housing materials All welded construction	N/A Wide selection of diaphragm and lower housing materials All welded construction 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 Fracking NACE Compliant Processes (Sour Gas Separation) Biogas and Biodiesel