Ashcroft 510-511 All-Welded Diaphragm Seals

The Ashcroft® 510 and 511 compact, 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 when space and safety are stressed.

Key Features:

  • All-welded, compact size and lightweight
  • Continuous duty
  • All-welded construction; prevents inadvertent disassembly
  • All-stainless steel construction; other materials available
  • Flush port (type 511) provides easy cleaning / flushing due to process media prone to clogging


  • Style:
    Type 510: threaded
    Type 511: threaded with flushing port
  • Process size: 1/2" NPT male
  • Rated up to 1,500 psi; optional 5,000 psi with high-pressure rings

The 510 and 511 all-welded diaphragm seals are ideal where fugitive emission and hazardous process protection are essential.     

Process Market:

  • Oil and Gas
  • Refineries (Hydroflouric / Sulfuric Alkalines)
  • Chemical and Petrochemical
  • Water and Wastewater

Process Applications:

  • Oil and Gas Fracking
  • NACE Compliant Processes (Sour Gas Separation)
  • Biogas and Biodiesel

Please Contact Us for more detail