702-703 Flanged High Displacement Diaphragm Seals

702-703 Flanged High Displacement Diaphragm Seals

The Ashcroft® 702 and 703 high-displacement diaphragm seals or isolation devices are used with low pressure or differential pressure gauges with low differential pressure and elevated static pressure.
The Ashcroft® 702 and 703 high-displacement diaphragm seals are used with low differential pressure gauges rated for elevated static pressures up to 50 bar. Used to ensure material compatibility, they are also applied when process media exhibit pulsation or the potential to clog an instrument connection. An ideal product for satisfying low pressure measurement needs.

Key Features

Flush port (optional) provides easy cleaning / flushing for process media prone to clogging

Enlarged welded diaphragm; high displacement allows high sensitivity to pressure fluctuations

Selection of wetted materials

Material certificates to EN 10204:2004 3.1

Markets & Applications

Water and Wastewater

Chemical and Petrochemical

Oil and Gas

Refinery

NACE Compliant Processes (Sour Gas Separation)

  • Specifications
  • Downloads

Wetted Parts Material

Tantalum

Stainless steel 316L (1.4404)

Monel

Hastelloy C

Hastelloy B

Titanium

Carpenter 20 (2.4660)

Pressure Rating

150 ... 600 lbs.

Case or Body Material

Stainless steel 316L (1.4404)

Process Connection Style

Flange according to ASME B16.5

Accuracy

Added Tolerance ±0.5% typical

Process Connection Size

1/2" ... 3"

Instrument Connection Style

Welded

Threaded

Data Sheets
Installation + Maintenance
Selection Guides
Product + Technical Information
Safety Data Sheets

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