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 3 in. Valve kit consisting of 2 - no. 374, disc, main vlave, 1 - no. 388, spring, second check valve, 1 - no. 816, gasket, relief valve housing, 1 - no. 817, gasket, relief valve clamp bolt, 1 - no. 820, spring, relief valve, 2 - no. 821, disc, relief valve, 1 - no. 1063, spring, main valve, 1 - no. 1067, diaphragm, relief valve /set/, 1 - no. 1073, diaphragm, main valve /set/
