712.4.1 Capacity.
PC § 712.4.1
A sewage pump or sewage ejector shall have the capacity and head for the application requirements. Pumps or ejectors that receive the discharge of water closets shall be capable of handling spherical solids with a diameter of up to and including 2 inches (51 mm). Other pumps or ejectors shall be capable of handling spherical solids with a diameter of up to and including 1 inch (25 mm). The capacity of a pump or ejector based on the diameter of the discharge pipe shall be not less than that indicated in Table 712.4.1. Exceptions: 1. Grinder pumps or grinder ejectors that receive the discharge of water closets shall have a discharge opening of not less than 1 1/4 inches (32 mm).
2.Macerating toilet assemblies that serve single water closets shall have a discharge opening of not less than 3/4 inch (19.1 mm). Table 712.4.1Minimum Capacity of Sewage Pump or Sewage Ejector Diameter of the Discharge Pipe (inches)Capacity of Pump or Ejector (gpm)2 21 2 1/2 30 3 46 For SI: 1 inch = 25.4 mm, 1 gallon per minute = 3.785 L/m.
