202-203 Flanged Diaphragm Seals

The Ashcroft® 202 and 203 diaphragm seals or isolation devices protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibits high temperature or the potential to clog an instrument connection. Ideal for satisfying many challenging applications.

Key Features:
  • Wide selection of diaphragm and lower housing materials
  • Diaphragm welded (metallic) or bonded (elastomer) to top housing
  • Flush port (type 203) provides easy cleaning / flushing due to process media prone to clogging
Specifications:
  • Style:
    Type 202: flanged
    Type 203: flanged with flushing port
  • Process size: 1/2″ to 3″
  • Flange rating: 150, 300, 600, 900 & 1500 class

The 202 and 203 diaphragm seals are ideal where process protection is 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
  • ATEX
  • CRN
  • GOST
  • NACE
 

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Tools

  • Distributor Locator

    Locate an authorized Ashcroft distributor in your area.
  • Materials Selector

    Use the selector to review compatible wetted materials and requirements of your application.
  • Unit Convertor

    Need to convert measurement units? Check out our quick and easy approach to pressure, temperature and flow unit conversions.

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