MRC:
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.ZZZY
Reference Number Differentiating Characteristics:
Size 8 in. Valve kit consisting of, 2 - no. 2, gasket, main and check valve plate, 1 - no. 4, spring, main valve, 2 - no. 6, disc, main and check valve, 2 - no. 15, disc, upper and lower relief valve, 1 - no. 19, spring, relief valve, 1 - no. 24, diaphragm, 1 - no. 26, gasket. Relief housing, 1 - no. 29, spring, check valve
