Compression Fittings

Compression fittings form a secure, leak-resistant connection by sliding tubing into the fitting and tightening the nut, which compresses the ferrule into the seat to create a watertight seal. They are widely used in instrumentation, process piping, and industrial environments where reliable tube-to-tube or tube-to-component connections are essential.

Why Choose James Duva Compression Fittings?

  • Versatile Connection Types – Available in straight, reducing, elbow, and adapter styles with NPT or butt-weld ends. 
  • Premium Materials – Offered in 316 stainless steel, Hastelloy® C-276, Alloy 20, and other corrosion-resistant alloys to suit harsh process environments. 
  • Reliable Performance – Designed for secure sealing and long-lasting service in instrumentation and fluid transfer systems. 

James Duva Inc. carries top brands and a broad range of compression fitting sizes and configurations to meet your industrial application needs. Whether you’re spec’ing fittings for new process lines or maintaining existing systems, we’re here to help.

Common Uses

  • Process Control & Instrumentation Lines 
  • Hydraulic & Pneumatic Systems 
  • Chemical & Petrochemical Plants 
  • Food, Beverage & Pharmaceutical Processing 
  • Water Treatment & Power Facilities

Frequently Asked Questions

Q1. What are compression fittings?
Compression fittings are mechanical connectors that join tubing or pipe using a compression nut and ferrule to form a tight, leak-resistant seal without soldering or welding.

Q2. What materials are available?
We offer compression fittings in 316 stainless steel, Hastelloy® C-276, Alloy 20, and other corrosion-resistant alloys for broad industrial use.

Q3. When should I use a compression fitting?
Compression fittings are ideal when joints may need periodic disassembly or when welding is impractical. They’re commonly used in instrumentation, fluid transfer, and process systems.

Q4. How do compression fittings differ from tri-clamp fittings?
Compression fittings use a ferrule and nut system for sealing, while tri-clamp fittings use a clamp and gasket system for quick disconnects, often preferred in sanitary process lines.

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