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200 Series Welded or Bonded Diaphragm Seal
Brand: Ashcroft IncWhen isolation of the process from an instrument is required, Ashcroft offers a comprehensive line of diaphragm seals.
Seal types include threaded, flanged, in-line threaded, in-line flanged, in-line socket weld, in-line butt weld, saddle and sanitary seals.
Also available is a complete offering of isolation or iso-rings and isolation or iso-spools.
Features- A metal diaphragm is welded to the top housing. Elastomeric diaphragms are bonded to the top housing. Either provides a double positive seal
- 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 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
Brand
Flange Size - 6” (DN 150)
- 6" (DN 150) - 150#
- 6" (DN 150) - 300#
Flange Size - 2” (DN 50)
- 2" (DN 50) - 150#
- 2" (DN 50) - 1500#
- 2" (DN 50) - 2500#
- 2" (DN 50) - 300#
- 2" (DN 50) - 600#
- 2" (DN 50) - 900#
Diaphragm Material
- 304 Stainless Steel
- 316L Stainless Steel
- Carpenter 20
- Hastelloy B
- Hastelloy C-22
- Hastelloy C-276
- Kalrez
- Monel 400
- Nickel
- Tantalum
- Teflon
- Titanium
- Viton
Pipe Connection
- 1" Pipe
- 1/2" Pipe
- 1/4" Pipe
- 1-1/2" Pipe
- 2" Pipe
- 3" Pipe (Saddle)
- 3/4" Pipe
- 4" Pipe (Saddle)
NPT Connection
- 1" NPT Female
- 1/2" NPT Female
- 1/4" NPT Female
- 1-1/2" NPT Female
- 3/4" NPT Female
Flange Type
- Flat Face (FF)
- Raised Face (RF)
- Ring Joint Facing
Flange Size - 1-1/2” (DN 40)
- 1-1/2" (DN 40) - 150#
- 1-1/2" (DN 40) - 1500#
- 1-1/2" (DN 40) - 2500#
- 1-1/2" (DN 40) - 300#
- 1-1/2" (DN 40) - 600#
- 1-1/2" (DN 40) - 900#
Flange Size - 3/4” (DN 20)
- 3/4" (DN 20) - 150#
- 3/4" (DN 20) - 1500#
- 3/4" (DN 20) - 2500#
- 3/4" (DN 20) - 300#
- 3/4" (DN 20) - 600#
- 3/4" (DN 20) - 900#
Fill Material
- Glycerin
- Halocarbon
- Silicone
- Syltherm
Flange Size - 1/2” (DN 15)
- 1/2" (DN 15) - 150#
- 1/2" (DN 15) - 1500#
- 1/2" (DN 15) - 2500#
- 1/2" (DN 15) - 300#
- 1/2" (DN 15) - 600#
- 1/2" (DN 15) - 900#
Enclosure, Body Material
- 304L Stainless Steel
- 316L Stainless Steel
- Carpenter 20
- Halar Coated Monel
- Hastelloy B
- Hastelloy C-22
- Hastelloy C-276
- Inconel 600
- Kynar
- Monel 400
- Nickel
- PVC
- Steel
- Tantalum Clad Stainless Steel
- Teflon Flanged Steel
- Titanium
Temperature Range
- Filling Fluid: -21° to 398.9° C (-70° 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
Pressure Rating
- psi: 1,500 (kPa: 10,500, bar: 105)
- Threaded Inlet & Metal Diaphragm psi: 5,000 (kPa: 34,470, bar: 344.7)
Approvals & Certifications
- CRN - Canadian Registration Number
- GOST
Flange Size - 8” (DN 200)
- 8" (DN 200) - 150#
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#
NACE & NIST
- NACE
Flange Size - 4” (DN 100)
- 4" (DN 100) - 150#
- 4" (DN 100) - 300#
Flange Size - 3” (DN 80)
- 3" (DN 80) - 150#
- 3" (DN 80) - 1500#
- 3" (DN 80) - 2500#
- 3" (DN 80) - 300#
- 3" (DN 80) - 600#
- 3" (DN 80) - 900#
- Biogas & Biodiesel
- Chemical & Petrochemical
- Corrosive Service
- Ease of Cleaning between Batches
- Elevated Process Temperatures
- Isolation of the Process for Safety
- NACE Compliant Processes
- Oil & Gas Applications
- Oil & Gas Fracking
- Refineries
- Replacement of Process Dead Leg
- Sanitary Connections
- Suspended Solids
- Water & Wastewater
Documentation
Industry Brochures
Installation & Maintenance
Product Information
- Attaching 2 1/2" and 3 1/2" 1009 Gauges To Diaphragm Seals pdf 817 KB
- Attaching Diaphragm Seals to Low Pressure Gauges pdf 1,008 KB
- Chlorine, Bromine and Fluorine Recommended Diaphragm Materials pdf 1.1 MB
- Diaphragm Seal with Dampening Device pdf 664 KB
- Diaphragm Seal with Vacuum Gauge pdf 663 KB
- Failure and Corrective Steps for Diaphragm Seals pdf 668 KB
- High Temperature Fill Fluid pdf 668 KB
- Instruments Not Available with Diaphragm Seals pdf 668 KB
- Minimum, Maximum and Pressures Recommended Diaphragm Materials pdf 651 KB
- Temperature Error pdf 1.8 MB
- Volumetric Displacement pdf 2.4 MB