Hydrogen Flush Flanged Diaphragm Seal DF

by Ashcroft Inc.

  • Flush flanged diaphragm seal prevents clogging of process media
  • Flush design minimizes the use of expensive specialty wetted materials
  • Available with a wide range of wetted materials
  • Available with optional Flushing Ring
  • Compact design eliminates need for lower housing
  • Protects process and instrumentation with materials to fit your application
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Hydrogen flush flanged diaphragm seal DF

  • The Ashcroft DF flush flanged diaphragm seal uses a diaphragm welded directly to the assembly flange.
  • This eliminates much of the cost associated with bulky lower housings made from exotic and expensive wetted materials.
  • The flush-mounted diaphragm prevents clogging and is available in a full range of metallic and coated materials.
  • There is also flushing ring option for flush flanged diaphragm seals.
  • Flushing ring is available for various ASME B16.5 flange sizes.

Key features

  • Flush mounted diaphragm seal prevents clogging of process media
  • Flush design minimizes the use of expensive specialty wetted materials
  • Continuous-duty construction
  • Available with a wide range of wetted materials
  • Available with optional Flushing Ring
  • Compact design eliminates need for lower housing
  • Protects process and instrumentation with materials to fit your application
  • The flushing ring provides a process flushing option for flush flanged diaphragm seals
  • Flushing ring can be used to flush, sample, or vent process when used with isolating valves
  • Dual ½ NPT flushing ports for flush (DF) diaphragm seals
  • Flushing ring is machined from bar stock
  • Flushing ring is available for various ASME B16.5 flange sizes

Specifications

  • Connection style: Flanged, flush diaphragm
  • Process connection size: 1, 1½, 2, 3 or 4 NPS
  • Instrument Connection: ¼ or ½ NPT Female
  • Flange: 150, 300, 600, 900 & 1,500 class
  • Flange Ratings (MAWP): Per ASME B16.5

Materials

  • For wetted components:
    • Diaphragm: 316L SS, Monel® 400, Tantalum, Hastelloy®C-276, Halar® coated 316L SS, Gold plated 316 SS, Teflon coated 316SSL, Hastelloy C-276 Teflon coated, Inconel 625, Inconel 825, Teflon coated Tantalum, Duplex 2205
  • For non-wetted components:
    • Top housing and flange: 316L Stainless Steel

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.
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Technical datasheet

Hydrogen Flush Flanged Diaphragm Seal DF_technical datasheet

Installation and Maintainence Manual

Hydrogen Flush Flanged Diaphragm Seal DF_Installation and Maintainence Manual

Technical datasheet

Flushing Ring

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      Ashcroft Inc.

      You shouldn't have to be an expert in pressure and temperature instrumentation to get the right components for your hydrogen applications. You need a partner with expertise in the hydrogen industry who can help you meet instrument quality and safety requirements. Ashcroft has decades of experience partnering with customers and offering solutions for their hydrogen applications including pressure sensors (transducers and transmitters), pressure gauges, pressure switches, diaphragm seals and temperature sensors. Let us help you navigate the expanding hydrogen market and its demands.

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