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 4 in Valve kit consisting of 2 - no 2, gasket cover plate 1 - no 3, spring main valve 1 - no 8, spring check valve 2 - no 11, spring main and check valve 2 - no 14, disc upper and lower relief valve 1 - no 17, spring relief valve 1 - no 18, gasket clamp-bolt 1 - no 21, diaphragm 1 - no 25, gasket relief valve housing
