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Ashcroft Flanged All-Welded Diaphragm Seal, 402/403

402/403 Flanged All-Welded Diaphragm Seal

Brand: Ashcroft Inc
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The Ashcroft 402 and 403 flanged all-weld diaphragm seals or isolation devices protect pressure measuring instruments.

Used to ensure process compatibility, they are also applied when process media exhibits high temperature, pulsation or the potential to clog an instrument connection.

An ideal selection for applications needing added product integrity.
Features
  • Recommended for use where clamped joints are not acceptable 
  • Assists in controlling plant emissions by helping prevent potential leakage of hazardous chemicals 
  • Prevents inadvertent disassembly 

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Specifications

Brand

Flange Material

  • Carbon Steel
  • Stainless Steel

Temperature Range

  • Filling Fluid: -21° to 398.9° C (-70° to 750° F)

Fill Material

  • Distilled Water
  • Ethylene Glycol & Water
  • Food Grade Silicone
  • Glycerin
  • Halocarbon
  • Propylene Glycol
  • Silicone
  • Syltherm

Flange Size - 1” (DN 25)

  • 1” (DN 25) - 150#
  • 1” (DN 25) - 1500#
  • 1” (DN 25) - 300#
  • 1” (DN 25) - 600#
  • 1” (DN 25) - 900#

Enclosure, Body Material

  • 316L Stainless Steel
  • Hastelloy B
  • Hastelloy C-22
  • Hastelloy C-276
  • Monel 400
  • Titanium

Maximum System Pressure

  • psi: 20 to 6,170 (kPa: 137.9 to 42,541, bar: 1.38 to 425.4)

Flange Size - 3/4” (DN 20)

  • 3/4” (DN 20) - 150#
  • 3/4” (DN 20) - 1500#
  • 3/4” (DN 20) - 300#
  • 3/4” (DN 20) - 600#
  • 3/4” (DN 20) - 900#

Diaphragm Material

  • 316L Stainless Steel
  • Hastelloy B
  • Hastelloy C-22
  • Hastelloy C-276
  • Monel 400
  • Tantalum
  • Titanium

NPT Connection

  • Instrument Connection: 1/2” NPT Female
  • Instrument Connection: 1/4” NPT Female

Ring Material

  • Clamp & Flanged Rings: Stainless Steel

Approvals & Certifications

  • CRN

Flange Size - 1/2” (DN 15)

  • 1/2” (DN 15) - 150#
  • 1/2” (DN 15) - 1500#
  • 1/2” (DN 15) - 300#
  • 1/2” (DN 15) - 600#
  • 1/2” (DN 15) - 900#

Nut & Bolt Material

  • Clamping Bolt: 300 Stainless Steel, Max.

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150#
  • 3” (DN 80) - 1500#
  • 3” (DN 80) - 300#
  • 3” (DN 80) - 600#
  • 3” (DN 80) - 900#

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150#
  • 4” (DN 100) - 1500#
  • 4” (DN 100) - 300#
  • 4” (DN 100) - 600#
  • 4” (DN 100) - 900#

Flange Type

  • Flat Face (FF)
  • Raised Face (RF)
  • Ring Joint Facing

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 150#
  • 2” (DN 50) - 1500#
  • 2” (DN 50) - 300#
  • 2” (DN 50) - 600#
  • 2” (DN 50) - 900#

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150#
  • 1-1/2” (DN 40) - 1500#
  • 1-1/2” (DN 40) - 300#
  • 1-1/2” (DN 40) - 600#
  • 1-1/2” (DN 40) - 900#

  • Biogas & Biodiesel
  • Chemical & Petrochemical
  • NACE Compliant Processes (Sour Gas Separation)
  • Oil & Gas Applications
  • Oil & Gas Fracking
  • Refineries
  • Water & Wastewater

Documentation

Data Sheets

Industry Brochures

Product Information

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