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.
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

Flush-mounted diaphragm prevents clogging of process media

Cost effective

Rupture protected due to embedded convolution behind the diaphragm

Material certificates to EN 10204:2004 3.1

Wide variety of pressure connection thread options

Markets & Applications

Chemical and Petrochemical

Food and Beverage

Pharmaceuticals

Pulp and Paper

  • Specifications
  • Downloads

Process Connection Style

Threaded with flush diaphrahm

Process Connection Size

1/2" ... 2"

Accuracy

Added Tolerance ±0.5% typical

Instrument Connection Style

Welded

Threaded

Pressure Rating

PN400

Wetted Parts Material

Hastelloy C

Stainless steel 316L (1.4435)

Case or Body Material

Stainless steel 316L (1.4404)

Hastelloy C

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