In plumbing system drawings, you can access information about plumbing line sizing calculations for fixtures (MvParts) on the Calculations tab in the Multi-view Part Properties dialog, accessed by clicking a fixture, then clicking
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The values on this tab only appear if you have sized the corresponding plumbing line. Because they are read-only, the values cannot be changed. You can view the flow rate and pressure properties for each connector of the fixture along with the minimum and the calculated values. The minimum flow rate and pressure values are required to adequately supply water to the fixture. The calculated flow rate and pressure values are the actual values calculated by the plumbing line sizing commands based on the design layout in the drawing. You can also view the system type of each connector.