DF-EN Flush Flanged Diaphragm Seal

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.
The Ashcroft® DF-EN 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.

Key Features

Available with optional Flushing Ring

Material certificates to EN 10204:2004 3.1

Rupture protected due to embedded convolution behind the diaphragm

NACE compliant assemblies

Flush design minimizes the use of expensive specialty wetted materials

Selection of wetted materials

Flush-mounted diaphragm prevents clogging of process media

Markets & Applications

Oil and Gas

Refinery

NACE Compliant Processes (Sour Gas Separation)

Machine Automation

Pumps and Compressors

Chemical and Petrochemical

Water and Wastewater

Energy

Biogas and Biodiesel

  • Specifications
  • Downloads

Pressure Rating

PN10 ... PN100

Process Connection Style

Flange according to EN 1092-1

Accuracy

Added Tolerance ±0.5% typical

Instrument Connection Style

Welded

Threaded

Wetted Parts Material

Inconel

Hastelloy C

Tantalum

Halar coated

Gold plated

PTFE coated

Stainless steel 904L (1.4539)

PFA coated

Stainless steel 321 (1.4541)

Stainless steel 316L (1.4404)

Monel

Duplex

Process Connection Size

DN25 ... DN125

Case or Body Material

Stainless steel 316L (1.4404)

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