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81 Bolt-Thru Isolation Ring
Brand: Ashcroft Inc
The Ashcroft 81 isolation ring or isolation device is mounted inline with process piping.
Used for process protection of measuring instruments, the "ring" design eliminates process accumulation, it assuring reliable and accurate pressure readings.
Ideal when reliable and continuous pressure measurement is needed.
Features- 360° instrument rotation with SQR option
- Selection of 1" through 20" nominal pipe size
- Non-clogging/low maintenance
- Complete instrument protection
- Ensure reliable/accurate pressure readings
- Optional retrofit flange to replace competitive units
Specifications
Brand
Process Temperature
- Buna-N & Natural Rubber: -34° to 107° C (-30° to 225° F)
- EPDM: -40° to 149° C (-40° to 300° F)
- Teflon & Viton: -25° to 177° C (-15° to 350° F)
Size
- Bolt-Thru: 1” to 10” (25.4 to 254 mm)
Temperature Range
- Fill Glycerin: 0° to 204° C (0° to 400° F)
- Fill Halocarbon: -57° to 149° C (-70° to 300° F)
- Fill Silicone (10 cSt): -40° to 260° C (-40° to 500° F)
- Fill Silicone (50 cSt): -40° to 316° C (-40° to 600° F)
Flange Size - 1” (DN 25)
- 1” (DN 25) - 150# ASME
- 1” (DN 25) - 300# ASME
Flange Type
- Retrofit Flange
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 150# ASME
Flange Size - 6” (DN 150)
- 6” (DN 150) - 150# ASME
- 6” (DN 150) - 300# ASME
Materials of Construction
- Flexible Liner: Buna
- Flexible Liner: EPDM
- Flexible Liner: Natural Rubber
- Flexible Liner: Teflon
- Flexible Liner: Viton
Flange Size - 8” (DN 200)
- 8” (DN 200) - 150# ASME
- 8” (DN 200) - 300# ASME
NPS Connection
- 1” NPS Male
- 10” NPS Male
- 1-1/2” NPS Male
- 12” NPS Male
- 14” NPS Male
- 16” NPS Male
- 18” NPS Male
- 2” NPS Male
- 20” NPS Male
- 3” NPS Male
- 4” NPS Male
- 6” NPS Male
- 8” NPS Male
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150# ASME
- 4” (DN 100) - 300# ASME
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150# ASME
- 2” (DN 50) - 300# ASME
Flange Material
- 316L Stainless Steel
- Carbon Steel
- CPVC
- PVDF
Fill Material
- Glycerin
- Halocarbon
- Silicone
NPT Connection
- 1/2” NPT Male
- 1/4” NPT Male
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150# ASME
- 3” (DN 80) - 300# ASME
Mounting
- Direct Mounting
Flange Size - 10” (DN 250)
- 10” (DN 250) - 150# ASME
- 10” (DN 250) - 300# ASME
Enclosure, Body Material
- 316L Stainless Steel
- Carbon Steel
Rotation
- 360° Instrument Rotation
Approvals & Certifications
- CRN
- Mining
- Water & Wastewater
