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

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

Flush-mounted diaphragm prevents clogging of process media

Markets & Applications

Pharmaceuticals

Pulp and Paper

Chemical and Petrochemical

Food and Beverage

  • Specifications
  • Downloads

Process Connection Size

1/2" ... 2"

Accuracy

Added Tolerance ±0.5% typical

Instrument Connection Style

Welded

Threaded

Pressure Rating

PN400

Wetted Parts Material

Stainless steel 316L (1.4435)

Hastelloy C

Case or Body Material

Hastelloy C

Stainless steel 316L (1.4404)

Process Connection Style

Threaded with flush diaphrahm

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