Description
Brass Compression Fittings: The Complete Installation and Maintenance Guide
Introduction
Brass compression fittings are widely used in plumbing, gas, and hydraulic systems due to their ease of installation and reliable sealing performance. These fittings create secure, leak-proof connections without soldering or specialized tools, making them ideal for both professional and DIY applications.

Key Benefits
Easy Installation
No soldering or heat required
Simple wrench tightening creates a strong seal
Ideal for tight spaces and retrofit projects
Durable Construction
Made from dezincification-resistant brass (DZR)
Corrosion-resistant for long-term use
Suitable for potable water (NSF/ANSI 61 certified)
Versatile Applications
Compatible with copper, brass, and some plastic pipes
Used in water, gas, and hydraulic systems
Available in straight, elbow, and tee configurations
Maintenance-Friendly
Can be disassembled and reassembled
Replaceable compression rings and nuts
Simplifies system repairs and modifications
Technical Specifications
Material Composition
Body: DZR brass (EN 12165 CW602N)
Compression Nut: Brass (CW614N)
Compression Ring (Olive): Copper or brass
Seals: EPDM (where applicable)
Performance Ratings
Working Pressure: 16 bar (PN16) at 65°C
Burst Pressure: ≥48 bar
Temperature Range: -20°C to 120°C
Certifications: WRAS, NSF/ANSI 61, DVGW
Common Sizes
15mm (½”)
22mm (¾”)
28mm (1″)
35mm (1¼”)
42mm (1½”)
54mm (2″)
Installation Guide
1: Pipe Preparation
Cut pipe squarely using a pipe cutter.
Deburr the pipe end to remove sharp edges.
Clean the pipe surface to ensure a smooth fit.
2: Fitting Assembly
Slide the compression nut onto the pipe.
Place the compression ring (olive) onto the pipe.
Insert the pipe fully into the fitting body.
3: Tightening
Hand-tighten the compression nut.
Use two wrenches to tighten further (1 to 1.5 turns).
Avoid over-tightening to prevent damage.
4: Testing
Pressure test at 1.5x working pressure (24 bar for PN16).
Check for leaks with soapy water.
Ensure proper pipe support to prevent stress on the fitting.
Maintenance & Troubleshooting
Routine Checks
Inspect annually for leaks or corrosion.
Verify tightness in high-vibration areas.
Replace worn compression rings if necessary.
Common Issues & Fixes
| Issue | Cause | Solution |
|---|---|---|
| Minor leak | Loose nut | Re-tighten the compression nut |
| Persistent leak | Damaged olive | Replace the compression ring |
| Hard to disassemble | Corroded threads | Apply penetrating oil |
| Cracked fitting | Over-tightening | Replace the fitting |
Conclusion
Brass compression fittings provide a reliable, tool-free solution for creating strong, leak-proof connections in plumbing and gas systems. Their durable DZR brass construction ensures long-term performance, while their simple installation makes them ideal for both professionals and DIYers. By following proper installation and maintenance practices, these fittings deliver dependable service in residential, commercial, and industrial applications.
IFAN factory started in 1993. And IFAN has workshop 120000 square meter with 610 staff. IFAN can design and produce all plumbing pipe and fitting include PPR,PVC,CPVC PPSU HDPE PEXA PEXB PERT pipe and fitting ,brass fitting, brass ball valve ,heating system , gas system , sanitary faucets and hose, In the past 30 Years, IFAN has never forgotten his mission-To protect health and safety. And IFAN factory use best materials to produce high quality pipe and fittings with automatic production line and high tech quality control machines. The most important,IFAN can guarantee that all pipes and fittings manufactured by IFAN are qualified. More information pls feel free contact us Whatsapp.
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