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100 Series Threaded Capsule Diaphragm Seal

Brand: Ashcroft Inc.

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The Ashcroft 100 threaded 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.
Features
  • The top housing and diaphragm capsule are interchangeable with all Ashcroft bottom housing 
  • A fill/bleed connection is standard, which permits filling the seal and instrument simultaneously after evacuation and allows the fill to flow into the completed unit 
  • A viton o-ring, compatible with all standard fill fluids, and a Teflon back-up ring provide a seal between the diaphragm capsule and the top housing 
  • A thin Teflon PTFE gasket between the diaphragm and bottom housing ensures a leak-tight corrosion resistant seal even at high pressure 
  • Top housing and pressure instrument are removable 
  • Continuous-duty design will prevent loss of process fluid if pressure instrument is removed or fails
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The Ashcroft 100 threaded 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.
Features
  • The top housing and diaphragm capsule are interchangeable with all Ashcroft bottom housing 
  • A fill/bleed connection is standard, which permits filling the seal and instrument simultaneously after evacuation and allows the fill to flow into the completed unit 
  • A viton o-ring, compatible with all standard fill fluids, and a Teflon back-up ring provide a seal between the diaphragm capsule and the top housing 
  • A thin Teflon PTFE gasket between the diaphragm and bottom housing ensures a leak-tight corrosion resistant seal even at high pressure 
  • Top housing and pressure instrument are removable 
  • Continuous-duty design will prevent loss of process fluid if pressure instrument is removed or fails

Specifications

Applications

  • Biogas & Biodiesel
  • Chemical & Petrochemical
  • Corrosive Service
  • Ease of Cleaning between Batches
  • Isolation of the Process for Safety
  • Oil & Gas Applications
  • Oil & Gas Fracking
  • Refineries
  • Sanitary Connections
  • Sour Gas
  • Suspended Solids
  • Water & Wastewater

Approvals & Certifications

  • CRN
  • GOST

Diaphragm Material

  • 304L Stainless Steel
  • 316L Stainless Steel
  • Carpenter 20
  • Gold-Plated 304 Stainless Steel
  • Hastelloy B
  • Hastelloy C-276, C22
  • Monel 400
  • Nickel
  • Tantalum

Enclosure, Body Material

  • 304L Stainless Steel
  • 316 Stainless Steel
  • 316L Stainless Steel
  • Carpenter 20
  • Hastelloy B
  • Hastelloy C-22
  • Hastelloy C-276
  • Inconel 600
  • Kynar
  • Monel 400
  • Nickel
  • PVC
  • Steel
  • Tantalum Clad Stainless Steel
  • Teflon Flanged Steel
  • Titanium

Fill Material

  • Glycerin
  • Halocarbon
  • Silicone
  • Syltherm

Flange Size - 1" (DN 25)

  • 1" (DN 25) - 150#
  • 1" (DN 25) - 1500#
  • 1" (DN 25) - 2500#
  • 1" (DN 25) - 300#
  • 1" (DN 25) - 600#
  • 1" (DN 25) - 900#

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#

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#

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 - 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 - 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#

Flange Size - 4" (DN 100)

  • 4" (DN 100) - 150#
  • 4" (DN 100) - 300#

Flange Size - 6" (DN 150)

  • 6" (DN 150) - 150#
  • 6" (DN 150) - 300#

Flange Size - 8" (DN 200)

  • 8" (DN 200) - 150#

Flange Type

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

Gasket Material

  • Teflon (PTFE)

NACE & NIST

  • NACE

NPT Connection

  • 1" NPT Female
  • 1/2" NPT Female
  • 1/4" NPT Female
  • 1-1/2" NPT Female
  • 3/4" NPT Female

Nut & Bolt Material

  • Bolt: 300 Series Stainless Steel

O-Ring Material

  • Viton

Ring Material

  • Stainless Steel

Temperature Range

  • -40° to 398.9° C (-40° to 750° F)

Welded Connection

  • 1" Butt Weld End
  • 1" Socket Weld End Female
  • 1/2" Butt Weld End
  • 1/2" Socket Weld End Female
  • 1/4" Butt Weld End
  • 1/4" Socket Weld End Female
  • 1-1/2" Butt Weld End
  • 1-1/2" Socket Weld End Female
  • 2" Butt Weld End
  • 2" Socket Weld End Female
  • 3/4" Butt Weld End
  • 3/4" Socket Weld End Female

Typical Applications

The 100 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