The IIAR standardizes a distinct color-coded labeling system for all ammonia piping to accelerate emergency response and simplify maintenance. Labels must include: "AMMONIA" in bold text. Physical State: Liquid, Vapor, or Liquid/Vapor mix.

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Manages liquid feed lines (whether direct expansion, flooded, or liquid recirculation) and suction returns. Proper sloping of suction lines back toward the vessel is mandatory. Best Practices for Installation, Testing, and Maintenance

A carbon steel pipe can contract significantly when transitioning from ambient temperature to a suction temperature of -40°F. The piping network must feature flexibility to absorb this movement without damaging joints, valves, or connected equipment.