Types L and K are approved for air conditioning and refrigeration (ACR) applications. Type M is not used because the wall is too thin. Typical sizes include 5/8 inch, 7/8 inch, 1-1/8 inch, etc. This Application Guide was created for design engineers and service technicians to demonstrate how to size refrigerant piping. It does not apply to industrial refrigeration and/or Variable Refrigerant. A common goal is to size the Suction, Hot Gas and Liquid lines for about 1Fo pressure drop at design capacity. avoid oil trapping at minimum system capacity. prevent oil draining from an active to an inactive evaporator. We would like to acknowledge the work of Garth Denison for his decades of service to the HVACR industry and in helping to lay the foundation for this handbook. Refrigeration quality annealed Capillary Tube in 30m Coils.
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