206 In-Line Flanged Diaphragm Seals

The Ashcroft® 206 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments. Mounted in-line to the process piping, it is used on applications where continuous flow prevents process clogging or accumulation, while preventing process fluid loss in the event the measuring instrument is removed or fails. An ideal choice for satisfying challenging installation requirements.

Key Features:
  • Wide selection of diaphragm and lower housing materials
  • Diaphragm welded (metallic) or bonded (elastomer) to top housing
Specifications:
  • Process size: 1/2″ to 8″
  • Flange rating: 150 class

The 206 in-line 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 Transportation-Pipelines
  • NACE Compliant Processes (Sour Gas Separation)
  • Biogas and Biodiesel
  • ATEX
  • CRN
  • GOST
  • NACE
 

Related Products

702-703 Flanged High Displacement Diaphragm Seals

The Ashcroft® 702 and 703 high-displacement diaphragm seals or isolation devices are used with low pressure or differential pressure gauges with low differential pressure and elevated static pressure.

DFE-ASME All-Welded Flanged Diaphragm Seal

The Ashcroft® DFE all-welded flanged diaphragm seal uses a diaphragm welded directly to the assembly flange and a light weight flange inlay.

DT-ASME Truncated Flanged Diaphragm Seal

The Ashcroft® truncated flanged diaphragm seal model DT protects pressure measuring instruments on isolated pipes or tanks.

DFE-EN All-Welded Flanged Diaphragm Seal

The Ashcroft® DFE all-welded flanged diaphragm seal uses a diaphragm welded directly to the assembly flange and a light weight flange inlay.

DF-EN Flush Flanged Diaphragm Seal

The Ashcroft® DF flush flanged diaphragm seal uses a flush diaphragm welded directly to the assembly flange, eliminating the need for a bulky lower housing.

202-203 Flanged Diaphragm Seals

The Ashcroft® 202 and 203 diaphragm seals or isolation devices protect pressure measuring instruments.

DT-EN Truncated Flanged Diaphragm Seal

The Ashcroft® truncated flanged diaphragm seal model DT protects pressure measuring instruments on isolated pipes or tanks.

302-303 Flanged Diaphragm Seals

The Ashcroft® 302 and 303 diaphragm seals or isolation devices protect pressure measuring instruments.

104 In-Line Threaded Diaphragm Seals

The Ashcroft® 104 in-line diaphragm seal or isolation device protects pressure measuring instruments.

106 In-Line Flanged Diaphragm Seals

The Ashcroft® 106 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments.

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.

Frequently Asked Questions

Get quick answers to common questions. Choose your topic:

See all FAQs »