Electric or steam heated tubing bundles and heated hose.

Winterizing enclosures for process instruments.


Modular support system for field-mounted instruments


Freeze protection for differential and pressure transmitters.

NEW! O'Brien Corporation is now selling overstocked and surplus tubing at deeply discounted prices. Check out our for a list of items available for quick delivery.

THE EXPERTS IN HEAT TRANSFER >

O'Brien Corporation provides customers with technical solutions to process accuracy and instrument winterization problems.

We've long been known for our commitment to superior engineering, uncompromising quality and world famous customer service.

WHAT'S NEW >

O'Brien introduces , a high-grade 316L seamless SS tube for use in analyzer sample lines. Chemically passivated and cleaned to ASTM G-93 for improved corrosion resistance and to remove impurities found in standard 316L SS tubing.

J-Line, Jacket lined tubing now available.

VISIT OUR OTHER INDUSTRY-SPECIFIC SITES >
Winterizing solutions for the power industry.


Dedicated to process and emissions analyzer systems.

Ultra high purity tubing and fittings.


High Purity Biopharmaceutical tubing and fittings