500-501 All-Welded Diaphragm Seals

The Ashcroft® 500 and 501 all-welded diaphragm seals or isolation devices protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibits high temperature, pulsation or the potential to clog an instrument connection. An ideal selection for applications needing added product integrity.

Key Features:
  • Recommended where clamped joints are not acceptable
  • All-welded construction; prevents inadvertent disassembly
  • All-stainless steel construction; other materials available
  • Flush port (type 501) provides easy cleaning / flushing due to process
    media prone to clogging
Specifications:
  • Style:
    Type 500: threaded
    Type 501: threaded with flushing port
  • Process size:
    Type 500: 1/4″ to 1″ NPT female; 1/4″ to 3/4″ NPT male
    Type 501: 1/4″ to 1″ NPT female
  • Rated up to 34 bar

The 500 and 501 all-welded diaphragm seals are ideal where fugitive emission and hazardous process protection are essential:

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
 

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740-741 High-Displacement Diaphragm Seals

The Ashcroft® 740 and 741 high-displacement diaphragm seals or isolation devices are used with low-ranged instruments or high static pressure dp gauges with low differential pressure.

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The Ashcroft® 300 threaded diaphragm seals or isolation devices protect pressure measuring instruments.

100-101 Threaded Diaphragm Seals

The Ashcroft® 100 and 101 threaded diaphragm seals or isolation devices protect pressure measuring instruments.

510-511 All-Welded Diaphragm Seals

The Ashcroft® 510 and 511 compact, all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

402-403 Flanged All-Weld Diaphragm Seals

The Ashcroft® 402 and 403 flanged all-weld diaphragm seals or isolation devices protect pressure measuring instruments.

200-201 Threaded Diaphragm Seals

The Ashcroft® 200 and 201 threaded diaphragm seals or isolation devices protect pressure measuring instruments.

330 All-Welded Flush Mini Diaphragm Seals

The Ashcroft® 330 all-welded flush mini-diaphragm seal or isolation device protect pressure measuring instruments.

400-401 All-Welded Diaphragm Seals

The Ashcroft® 400 and 401 all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

Tools

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  • Materials Selector

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  • Unit Convertor

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