How Do Brass Press Fittings Work?

Brass press fittings create a strong, leak-proof connection between pipes without soldering, threading, or glue. Here’s how they work:

1. Key Components

  • Brass Press Fittings Brass Fitting Body – Contains built-in O-rings (gaskets) and a gripping mechanism (usually a stainless steel ring or teeth).
  • Press Tool – A hydraulic or battery-powered tool that crimps the fitting onto the pipe.

2. Installation Process

Step 1: Cut & Deburr the Pipe

  • Ensure the pipe end is clean, straight, and free of scratches/debris.
  • Use a pipe cutter and deburring tool for a smooth edge.

Step 2: Insert the Pipe into the Fitting

  • Push the pipe fully into the fitting until it bottoms out.
  • visual mark or depth gauge confirms proper insertion.

Step 3: Press the Connection

  • Place the jaw of the press tool over the fitting’s press zone.
  • Squeeze the tool to compress the fitting uniformly around the pipe.
  • The press action:
    • Compresses the O-ring (creating a watertight seal).
    • Locks the stainless steel grip ring onto the pipe (prevents pull-out).

3. How the Seal Works

  • O-Ring Seal – The compressed rubber gasket prevents leaks.
  • Mechanical Grip – The stainless steel ring bites into the pipe, securing it permanently.
  • Pressure Resistance – Properly pressed fittings can handle high pressure (up to 16 bar or more).

4. Advantages Over Traditional Methods

  • No heat or open flame (unlike soldering).
  • Faster than threading or gluing.
  • More reliable than compression fittings (no risk of loosening over time).

5. Common Applications

  • Plumbing (water supply, heating systems)
  • HVAC & refrigeration
  • Gas lines (with approved fittings)
  • Industrial piping
Press Fittings

Share

Facebook
Twitter
LinkedIn

Table of Contents