Ashcroft, Inc. - 400 and 401 All-Welded Diaphragm Seals

Unit of Measure

Items	400 400 All-Welded Diaphragm Seal	401 401 All-Welded Diaphragm Seal
Description	N/A The Ashcroft® 400 all-welded 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® 401 all-welded 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 (National Pipe Thread (NPT) Male)	N/A 1/4 to 1 in
Process Connection Size (National Pipe Thread (NPT) Female)	N/A 1/4 to 1-1/2 in
Instrument Connection Size	N/A 1/2 in1/4 in
Instrument Connection Type	N/A National Pipe Thread (NPT) Female
Pressure Rating	N/A Up to 4,400 psi
Pressure Rating (Optional)	N/A 9,000 psi	N/A 5,000 psi
Typical Added Tolerance (±)	N/A 0.5 %
Connection Style	N/A Threaded	N/A Threaded with Flushing Port
Key Features	N/A Select diaphragm and lower housing materials All-welded construction Carbon steel rings (standard); 300 stainless steel rings (optional) Pressure rated up to 4,400 psi; optional high-pressure rings to 9,000 psi (type 401: 5,000 psi ) Flush port (type 401) provides easy cleaning/flushing for 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