How to Install Brass Compression Fittings: Step-by-Step Tutorial for Beginners
Installing brass compression fittings is a fundamental plumbing skill that allows for secure, leak-free connections without soldering. This step-by-step tutorial is designed for beginners, ensuring a successful DIY installation for water supply lines, gas connections (where approved), and other low-pressure applications.
Tools & Materials You'll Need:
Brass compression fitting (correct size for your pipe)
Adjustable wrenches (two)
Tube cutter or hacksaw
File or deburring tool
Pipe/tubing (copper, PEX, or other compatible type)
Step 1: Prepare the Pipe
Begin by cutting the pipe to the required length. Use a proper tube cutter for a clean, square cut-this is crucial for a good seal. If using a hacksaw, ensure the cut is as straight as possible. After cutting, use a file or deburring tool to remove any rough edges or metal burrs from both the inside and outside of the pipe. A smooth pipe end prevents damage to the compression ring (ferrule) and ensures a tight seal.
Step 2: Assemble the Fitting Components
Slide the compression nut onto the pipe, followed by the compression ring (ferrule). Ensure the ferrule is oriented with its tapered side facing the fitting body. This is a common beginner mistake-incorrect orientation will cause leaks. The nut and ferrule should slide freely on the pipe at this stage.
Step 3: Make the Connection
Insert the prepared pipe end fully into the compression fitting body until it rests against the internal shoulder. Do not force it. While holding the fitting body steady with one wrench, use a second wrench to tighten the compression nut. Begin by hand-tightening until snug, then complete with a quarter to a half turn (about 90-180 degrees) with the wrench. Avoid over-tightening, as this can crush the pipe or deform the ferrule excessively, leading to leaks.
Step 4: Test for Leaks
Once installed, restore water or gas pressure to the system. Carefully inspect the connection for any signs of leakage. For water lines, look for drips or moisture. For gas lines approved for compression fittings, apply a soapy water solution to the joint-bubbles will form if there is a leak. If a leak is detected, you may attempt a further quarter-turn tightening. If the leak persists, you must disassemble the fitting, replace the ferrule (as it is now compressed to a specific shape), and repeat the installation process.
Pro Tip for Success: Always use two wrenches-one to hold the fitting body and one to turn the nut. This prevents twisting the entire pipe or damaging other connections. With this clear, step-by-step approach, even first-time installers can achieve professional, reliable results with brass compression fittings.
IFAN Factory
IFAN VR Factory (Click Here For A 360° Tour Of IFAN Factory/Workshop)
The IFAN factory was established in 1993 and has a 120,000 square meter workshop with 610 employees. IFAN can design and produce all plumbing pipes and fittings, including PPR, PVC, CPVC, PPSU, HDPE, PEXA, PEXB, PERT, brass fittings, brass ball valves, heating systems, gas systems, faucets, and sanitary hoses.
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Phone/Whatsapp:+86 15088288323
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