Gas Lined Valves: Safe & Durable Industrial Seals

Gas lined valves are critical components in pipelines and processing systems where corrosion resistance and leak prevention are paramount. These valves use a flexible lining—typically PTFE or similar materials—inside metal bodies to create a durable, impermeable barrier against gas and chemical exposure.
This construction significantly extends service life while minimizing maintenance, making gas lined valves a preferred choice in natural gas transmission, chemical processing, and renewable gas infrastructure.
Whether you operate in oil & gas, utilities, or industrial manufacturing, understanding gas lined valves helps optimize system safety and efficiency.

What Are Gas Lined Valves?

Gas lined valves combine a robust metal casing—often carbon steel or stainless steel—with a polymer-based lining inside. This lining acts as a protective layer, preventing direct contact between the valve’s internal surfaces and aggressive gases like methane, hydrogen sulfide, or carbon dioxide. The result is excellent resistance to corrosion, abrasion, and chemical degradation.
Unlike unlined valves, which degrade quickly under harsh conditions, gas lined valves maintain integrity over decades with minimal intervention, reducing downtime and replacement costs.

Key Benefits and Applications

The primary advantage of gas lined valves is their superior sealing performance. The PTFE lining ensures tight closure even under high pressure and temperature fluctuations, preventing leaks that could compromise safety or waste valuable resources.
Their versatility makes them ideal for:

• Natural gas distribution networks
  
• Biogas and renewable gas storage systems
  
• Chemical plants handling corrosive fluids
  
• Oil refineries and petrochemical processing units
  

Design and Maintenance Best Practices

To maximize longevity, installers should follow strict guidelines: verify proper lining thickness during manufacturing, avoid mechanical damage during handling, and conduct regular inspection of seals and stem components.
Routine maintenance includes checking for wear patterns, testing actuation mechanisms, and cleaning internal surfaces to prevent residue buildup. Follow ISO 15875 standards for periodic testing and certification to ensure ongoing reliability.

Safety and Environmental Impact

Gas lined valves play a vital role in preventing leaks of flammable or toxic gases, reducing environmental risks and improving workplace safety. By minimizing emissions and preventing hazardous incidents, they support compliance with global safety regulations like API 6A and ASME B36.10M.
Their durable design also reduces the need for frequent replacements, lowering the carbon footprint associated with manufacturing and transporting new valve components.

In summary, gas lined valves are essential for safe, efficient, and sustainable industrial gas handling. Their advanced lining technology delivers long-term performance, reliability, and peace of mind. Choosing the right valve and maintaining it properly ensures your system runs smoothly—protecting both people and the planet.
Start protecting your operations today with gas lined valves engineered for lasting performance.