331 All-Welded Flush Mini Diaphragm Seals
331 All-Welded Flush Mini Diaphragm Seals
The Ashcroft® 331 all-welded flush mini-diaphragm seal or isolation device protect pressure measuring instruments.
Features & Properties
Use & Application
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Features & Properties
Use & Application
The 331 all-welded flush mini-diaphragm seals are ideal where corrosion protection and limited-spacing are essential.
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Data Sheets
Installation + Maintenance
Drawings + Models
Safety Data Sheets
The Ashcroft® 331 all-welded flush mini-diaphragm seal protects pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit pulsation and a potential for plugging or freeze-up. An ideal choice for limited space applications.
Key Features
Rupture protected due to embedded convolution behind the diaphragm
Flush-mounted diaphragm prevents clogging of process media
Wide variety of pressure connection thread options
Material certificates to EN 10204:2004 3.1
Cost effective
Markets & Applications
Pulp and Paper
Pharmaceuticals
Food and Beverage
Chemical and Petrochemical
Process Connection Size
1/2" ... 2"
Pressure Rating
PN400
Wetted Parts Material
Stainless steel 316L (1.4435)
Hastelloy C
Instrument Connection Style
Threaded
Welded
Accuracy
Added Tolerance ±0.5% typical
Process Connection Style
Threaded with flush diaphrahm
Case or Body Material
Hastelloy C
Stainless steel 316L (1.4404)
Data Sheets
Installation + Maintenance
Drawings + Models
Safety Data Sheets
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- Category: Threaded Seals
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