Gaseal IGS Series integral Gas Seal.

The Gasseal IGS Series, located integrally at the base of the flare tip, has been designed to prevent air ingress into the flare system and has a number of advantages over gas inversion seals.
 
The Gasseal function by presenting a smaller cross-sectional area of the stack to the rising gases, thereby reducing the volume of gas needed to maintain a fixed purge velocity. It also prevents the passage of air currents down the stack riser section.
 
In order to get maximum protection to the stack, the Gasseal should be fitted inside the flare tip. The Gasseal is positioned a number of nominal diameters from the stack exit. The Gasseal operation consequently benefits not only from the reduction in cross sectional area but also from positioning the control point relatively well down into the stack.

• Lower purge gas rates on smaller diameter stacks.
  
• Lower pressure drop.
  
• Negligible structural load.
  
• No maintenance.
  
• Low Capital cost.