Single, plastic tubing is lightweight resistant to flaking, cracking and aging from oxidation. Stays flexible over time and in all types of climate conditions. Features a non-porous inner wall for easy cleaning and dependable air flow. Smooth inner surface is less susceptible to particle entrapment, which can resist air flow. Crystal clarity permits detection of equipment deficiencies such as backflow of milk into the air lines. Transflow S3 holds full vacuum at room temperature. Typical applications include raw milk transport lines and dairy processing. Designed to be used in conjunction with Transflow S3 M-34R Tubing.