![]() AWWA - American Water Works Association.A technology where a network of antennas, towers or other fixed infrastructure is installed to automatically collect meter reading at set increments via radio transmitted signals. AMI - Automated Metering Infrastructure.Generally a technology for reading water meters in drive-by mode via a short distance ratio signal. Absolute Encoder - An encoder register that outputs the exact position of the number wheels or digital count rather than an incremental pulse.Internal parts and registers are generally interchangeable with the standard 3/4" meter. It is often used to upgrade a formerly 5/8" x 3/4" meter to full 3/4" without having to re-plumb for the longer 3/4" standard lay length, or where space is not available for the longer meter. 3/4" (Short) Meter - This is a full 3/4" bore and measuring capacity meter, but with a 7-1/2" lay length.It is normally used on 3/4" service lines where the full 3/4" flow capacity is required and can't be provided by a 5/8" x 3/4" meter. However, the lay length is 9" inlet to outlet. 3/4" (Standard) Meter - A standard 3/4" meter has a full 3/4" water flow capacity, or bore, and uses the same 3/4" AWWA meter threads as the 5/8" x 3/4" meter.This is currently the most common residential meter size. It uses meter coupling designated as 3/4". The lay length is 7-1/2", the same as the 5/8" x 1/2" meter. ![]() is approximately 1.25" (1" NPS - Not 3/4" NPT). 5/8" x 3/4" Meter - This is a 5/8" internal capacity meter but with threads designed for use with 3/4" meter service piping on inlet and outlet.a 5/8" meter uses couplings designated as 1/2" or 5/8" meter couplings This is a common size for older homes and older cities. AWWA meter threads are straight meter threads used with a swivel coupling nut and meter gasket. 5/8" meter and 5/8" x 1/2" meter are used interchangeably. 5/8" x 1/2" Meter - This is the 5/8" standard meter with 1/2" meter threads.Internal components and registers of a 5/8" x 1/2 and 5/8" x 3/4" are normally the same and interchangeable, with the thread size being the only difference. It is referred to as a 5/8" x 3/4" meter. There is a newer meter that has the same 5/8" internal flow capacity and bore, but has 3/4" AWWA meter threads. ![]() (5/8" flow capacity with 1/2" inlet and outlet). A 5/8" meter is also now referred to as a 5/8" x 1/2" meter. The original standard of a 5/8" meter was to attach to 1/2" plumbing and had a standard 1/2" AWWA meter thread to use 1/2" meter couplings. the 5/8" designation does NOT refer to thread size.
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