– Lists acceptable pipe materials (e.g., ASTM A53 Grade B, seamless only above 6 inches). Forbids copper, brass, or galvanized steel due to corrosion.
– Contains the famous friction loss tables. For example, you will find line sizes for 100-foot equivalent lengths, with pressure drop limited to 1 psi per 100 feet for suction lines. iiar ammonia refrigeration piping handbook pdf link
By respecting the standard’s value and accessing it legally, you not only protect yourself from outdated or corrupted files but also support the continued work of the International Institute of All-Natural Refrigeration—ensuring the next edition (IIAR 2-2026) will be even better. Disclaimer: This article is for informational purposes. Always refer to the latest official IIAR standard for actual design decisions. Links to external sites (including IIAR.org) are accurate as of the publication date. – Lists acceptable pipe materials (e