What type of tubing is known for its low resistance and glass smooth lining in draft systems?

The type of tubing known for its low resistance and glass smooth lining in draft systems is low resistance barrier tubing. This type of tubing is specifically designed to minimize turbulence and friction as the beer travels from the keg to the tap, which helps to maintain the quality and carbonation of the beer. Its smooth interior surface aids in preventing any deposits or residues from building up, ensuring a cleaner flow and a better-tasting product.

Low resistance barrier tubing typically has special materials or coatings that further enhance its performance over other tubing options. This is particularly important in draft systems, where maintaining the integrity of the beer from the moment it leaves the keg until it is poured is crucial for providing the best flavor and experience to the consumer.

Vinyl, stainless steel, and PVC options do have their uses in various applications, but they do not offer the same low resistance or smooth lining qualities that are critical in a high-quality draft system. For example, vinyl tubing can have higher friction, while stainless steel is often more rigid and may not serve the same purpose in flexibility and flow enhancement. PVC is generally not as suitable forbeer systems due to potential leaching of undesirable chemicals and lack of flexibility in such applications.