C702-86: AWWA Standard for Cold-Water Meters--Compound Type (PDF)

The foreword addresses history of the standard, metrication, information regarding use of the standard, and major revisions from previous editions. Section 1 discusses scope of the standard, documents referenced, affidavit of compliance, and basis for rejection. Section 2 covers choice of materials, main casing, register box rings and covers, measuring cages or chambers, measuring turbines and discs, disc and turbine spindles, intermediate gear trains, external fasteners, companion flanges, and automatic valves. General design and size, capacity, length, pressure requirement, interior parts, registration accuracy, and markings are detailed in Section 3. The following topics are discussed in Section 4 on detailed design: main case, external case screws, bolts, nuts, and washers; main case connections; companion flanges; tapped bosses; registers; register boxes; intermediate gear trains; measuring chambers or cages, measuring turbines or discs; magnetic couplings; automatic valves; bypass meter; strainers; and seal wire holes. An appendix provides general meter information pertaining to units of measurement, register types, tests and testing equipment, under- and over-registration, periodic tests, meter storage, bypass shutoff valves, and service bypass around meter.