81 Bolt Thru Isolation Ring

The Ashcroft® 81 isolation ring is mounted inline with process piping. Used for process protection of measuring instruments, the ring-design eliminates process accumulation, assuring reliable and accurate pressure readings. Ideal when continuous pressure measurement is needed.

Key Features:
  • 360° sensing flexible inner-liner; no process deadleg
  • Safe Quick Release™ (optional) enables instrument removal without loss of fill or process shutdown
  • Needle valve (optional) dampens pulsation effects
  • Retrofit end plates (optional) allows easy replacement of other manufacturer models
Applications:

Process Market:

  • Water and Wastewater
  • Mining
  • Pulp and Paper

Specifications

Certifications & Approvals

Data Sheets & Instruction Manuals

Drawings & Product/Technical Information

Resources & Tools

Min/Max Guide

IMPORTANT! When selecting an instrument, refer to the Min/Max Guide (Pi page) for compatibility with this diaphragm seal

Learn More

Materials Selector

Use the selector to review compatible wetted materials and requirements of your application.

Learn More

Unit Converter

Need to convert measurement units? Check out our quick and easy tool to convert pressure, temperature and flow units of measure.

Learn More

Product Information

To learn more about the technical details for options available, review our product information (PI) pages.

Learn More

Take the Next Step