Ashcroft 80-81 - Isolation Rings - Manual (Page 3)

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1. CAUTION
2. OVERVIEW
3. SPECIFICATIONS
4. DIMENSIONAL DRAWINGS
5. PRODUCT INSTALLATION
6. ASSEMBLY REMOVAL
7. PRODUCT MAINTENANCE / IN-SERVICE REPLACEMENT
8. STORAGE
CAUTION
WARNING! READ PRIOR TO PRODUCT INSTALLATION AND/OR MAINTENANCE
GENERAL:
Use proper safety equipment and procedures when handling product. Failures causing injury and/or
damage may be the result of excessive process overpressures / temperatures, improper material selection
(chemical compatibility) or other potential misuse.
OVERVIEW
Isolation rings are designed to protect measuring devices, e.g. pressure gauges, switches, and transducers,
from direct contact with the process media. Using a 360-degree flexible liner that eliminates the potential for
clogging and/or fouling, while transmitting pressure hydraulically to the instrument. Offered in two styles,
Type 80 (Wafer) and Type 81 (Bolt-thru), each is mounted between customer-supplied flanges of process
piping; available in nominal pipe sizes from 2˝ to 20˝ and 2˝ to 10˝, respectively.
PRODUCT SPECIFICATIONS
Type/Size:
Type 80 Wafer: 2˝ to 20˝
Type 81 Bolt-Thru: 2˝ to 10˝
Liner Materials: Buna-N, Teflon ® , EPDM, Natural Rubber, Viton ®
Liner Process Temeperature Limits: Buna-N –30/225°F
Teflon ® –15/350°F
Viton ® –15/350°F
Natural Rubber –30/225°F
EPDM –40/300°F
Flange Materials: 316L SS, Carbon Steel
Flange (Type 81 Bolt-Thru only): ANSI/ASME Class 150 / 300 (Type 80 wafer applicable in both
150 and 300 class)
Body: 316L SS, Carbon Steel
Instrument Connection Size: ¼, ½ Female NPT
Fill Fluid: Glycerin, Silicone (10 CST), Silicone (5 CST), Halocarbon.
AVAILABLE PRODUCT OPTIONS
Safe Quick Release Instrument Removal Option: (SQR)
• All Welded Assembly (XDU) – Not available with Safe Quick Release (SQR) and/or Needle Valve
• Retrofit Flange (XIR)
• Wired Stainless Steel Tag (XNH)
• Calibration Chart (XC4) – Measuring instrument attached
Consult factory for additional options
TABLE OF CONTENTS
1 - CAUTION
2 - OVERVIEW
3 - PRODUCT
SPECIFICATIONS
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