100-101 Threaded Diaphragm Seals from Ashcroft

Ashcroft 100-101 Threaded Diaphragm Seals
The Ashcroft® 100 and 101 threaded diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibit high temperature or has the potential to clog an instrument connection. Ideal for satisfying many challenging applications.


100-101 Threaded Diaphragm Seals Features:

  • 316L stainless steel top housing (standard)
  • Wide selection of diaphragm and lower housing materials
  • Diaphragm threaded to top housing
  • Flushing port (type 101) provides easy cleaning/flushing for process media prone to clogging



100-101 Threaded Diaphragm Seals Applications:

  • 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



100-101 Threaded Diaphragm Seals Specifications:

Process Connection Size
  • 1/4 to 1 NPT Male
  • 1/4 to 1-1/2 NPT Female
Instrument Connection¼ NPT Female, ½ NPT Female
Pressure Ratings2,500 psi; 5,000 psi (OPT.)
Added Tolerance±0.5% typical
Connection Style
  • 100: Threaded
  • 101: Threaded with flushing port
Industrial/OEM MarketsHydrogen Systems


Download Ashcroft 100/101, 200/201, 300/301 Threaded Diaphragm Seals Datasheet


Contact us at (855) 737-4714 to learn more, or fill out our online form.
Process Control
A lesson for me is that I need to involve you earlier in the program.

You were tireless in your support and it will not be forgotten!

Valin Was There For Us
When we needed technical assistance and applications support, Valin was there for us. Their knowledgeable engineers saved us an invaluable amount of time, helping us get up and running quickly. We are very happy with their services.