Gas leaks are among the most dangerous hazards in building systems. Flexible connectors help prevent leaks — but only when they’re installed and maintained properly. Improper installations, aging connectors, or incompatible fittings can lead to gas leaks, fire, or carbon monoxide exposure.

Industry standards such as ANSI Z21.24 and CSA 6.10 establish strict performance and safety criteria for gas connectors. Always ensure your components meet or exceed these standards before installation.

Following proper safety procedures when selecting and installing flexible gas connectors is essential to preventing leaks, ensuring compliance, and protecting both property and personnel.

Always use connectors specifically approved for gas applications. Avoid unmarked or uncertified products. Certified connectors will display the appropriate listing marks (ANSI or CSA), pressure ratings, and manufacturer identification.

Connectors manufactured before 1990 — particularly uncoated brass types — can crack or fail over time. If you encounter an older connector, replace it immediately with a modern stainless-steel or coated version.

Selecting the correct connector diameter and length is essential.

Always choose a connector that allows for a gentle, nautral curve, not a tight bend.

Flexible connectors should never pass through walls, floors, or ceilings. They must remain visible and accessible for inspection and servicing. This is a critical safety requirement in most gas codes.

Even if a connector appears to be in good condition, it should not be reused when installing a new appliance. Always install a new connector with fresh fittings to ensure a proper gas-tight seal.

Careful installation not only ensures safety but also extends the lifespan and reliability of the entire gas system, helping prevent costly service calls or potential hazards.

Before starting any work, verify that the gas supply is turned off and that the appliance is disconnected from power.

Check both the connector and the appliance inlet for any signs of corrosion, deformation, or damage. A small dent or kink can compromise performance and safety.

Only use the fittings provided or specified by the connector manufacturer. Mismatched fittings are one of the leading causes of gas leaks. Do not modify connectors or attempt to adapt incompatible ends.

Install the connector without twisting it. Twisting can damage the corrugated structure and cause leaks. Make gentle bends, ensuring the radius of the curve is not tighter than the manufacturer’s specifications.

Once installed, test all connections using a non-corrosive leak detection solution or an electronic gas detector. Never test with an open flame. If bubbles form or gas is detected, immediately shut off the supply and correct the connection.

Flexible gas connectors require periodic inspection, especially in high-use or high-vibration environments. Inspect connectors for:

Replace any connector showing wear or damage, and always replace connectors when relocating or replacing an appliance. Regular inspection is a simple way to prevent leaks and ensure continued safety.

A flexible gas connector may be a small component, but it carries a big responsibility. Proper installation, certified materials, and regular inspection all play critical roles in ensuring safety, performance, and peace of mind.

At NDL Industries, we design our flexible gas connectors to meet the highest standards of quality and compliance. Each product is engineered for long-term reliability, corrosion resistance, and ease of installation, built to perform in both residential and commercial environments.

Trusted by HVAC and plumbing professionals across North America, NDL connectors deliver the precision, consistency, and durability that modern systems demand. When it comes to gas connections, quality isn’t optional, it’s essential.

Choose certified. Choose reliable. Choose NDL Industries.