All welded Hydrogen Diaphragm Seals 510-511

  • Compact and lightweight design allows seals to fit in confined areas
  • All-welded hydrogen diaphragm seals prevents inadvertent disassembly
  • All-stainless steel construction but other materials also available
  • Ensures process compatibility
  • Male connections eliminate adapters/fittings
  • Flush port (type 511) provides easy cleaning / flushing for process media prone to clogging

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All welded hydrogen diaphragm seals 510-511

  • The Ashcroft 510 and 511 compact, all-welded diaphragm seals protect pressure measuring instruments.
  • It is used to when process compatibility is required.
  • They are also applied when process media exhibit high temperature, pulsation or the potential to clog an instrument connection.
  • It is an ideal selection for high pressure application.

Key features

  • Compact size and lightweight
  • Compact design allows seals to fit in confined areas
  • Continuous duty design
  • All-welded construction prevents inadvertent disassembly
  • All-stainless steel construction but other materials also available
  • Minimal fill volume
  • Ensures process compatibility
  • Male connections eliminate adapters/fittings
  • Flush port (type 511) provides easy cleaning / flushing for process media prone to clogging
  • Sufficient displacement to drive a wide variety of instrumentation

Specifications

  • Connection style:
    • 510: Threaded
    • 511: Threaded with flushing port
  • Process connection size: 1/2 NPT Male
  • Instrument Connection: 1/2 NPT Female
  • Connection Type: Threaded
  • Pressure rating:
    • 1,500 psi ++ 100°F (STD.)
    • 10,000 psi ++ 100°F (OPT.)

Materials

  • For wetted components:
    • Diaphragm: 316L SS, 316L SS, Hastelloy® C-276, Monel® 400, Duplex 2205
    • Lower housing: 316L SS, 316L SS, Hastelloy® C-276, Monel® 400, Duplex 2205, Hastelloy B
  • For non-wetted components:
    • Top housing: 316 SS, Hastelloy® C-276, Monel® 400, Duplex 2205

Contact us

  • Ashcroft is a trusted source for pressure, temperature, and test instruments around the world. Interested? Please contact the vendor by filling in the contact request form.
Ashcroft

At Ashcroft, we know safety and compliance are critical for hydrogen applications. That’s why we deliver proven pressure and temperature instruments—backed by over 170 years of expertise—that keep your systems running reliably and your people protected. From sensors and gauges to switches, diaphragm seals and temperature probes, our hydrogen-ready solutions help you avoid downtime, meet regulatory demands, and operate with confidence. With Ashcroft, you have a trusted partner who listens, supports, and delivers when it matters most.

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