330 All-Welded Flush Mini Diaphragm Seal

The Ashcroft® 330 all-welded flush mini-diaphragm seal protects pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit pulsation and a potential for plugging or freeze-up. An ideal choice for limited space applications.

Key Features:
  • Compact and lightweight design
  • All-welded construction
  • Flush diaphragm; eliminates clogging or process accumulation
  • Volumetric displacement; For use with 3 1/2″ pressure gauges or smaller (60 to 3,000 psi)
  • Pressure rated up to 3,000 psi

Process Market:
Pulp and Paper
Chemical and Petrochemical

Medical & Life Sciences Market:
Food and Beverage


Certifications & Approvals

Data Sheets & Instruction Manuals

Drawings & Product/Technical Information

Resources & Tools

Min/Max Guide

IMPORTANT! When selecting a diaphragm seal or isolation ring, refer to the Min/Max Guide (PI page) for compatibility with this gauge. 

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Materials Selector

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

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Unit Converter

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

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Product Information

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

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Contact Ashcroft

Ashcroft is a trusted source for pressure, temperature, and test instruments around the world. Learn more about how we can help you protect your people, processes, and profits.

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