A12 Water Meter Size Adapter

Install 5/8" x 1/2" meter in a 3/4" x 9" setter

Extends 7.5" meter lay length to fit 9" setter lay length

To maximize revenue and meter accuracy, you should always use the smallest size meter that will handle the flow rates required of the building tenant. These adapters allow easy downsizing of meters without re-plumbing the meter setting.

For installing a 5/8" x 1/2" (7.5" lay length) into a full 3/4" meter 9" meter setting. Increases threads on meter from AWWA 1/2" to AWWA 3/4" , and extends lay length by 1.5" from 7.5" to 9". TWO adapter required per setting, sold as a set of two. 

  • Allows Downsizing an existing 9" lay length full 3/4" meter to a new 5/8" x 1/2" meter extended with this adapter. 

  • Changes a 5/8" x 1/2" meter with 7.5" lay length to 9" lay length with 3/4" AWWA Meter Threads.


Lead-Free Brass

  • One end has 3/4" AWWA Male Meter Threads (approx. 1-1/4" O.D.)
  • One end has 1/2" AWWA Female Meter Threads (5/8" meter) (approx. 1" I.D.)
  • Adds 1.5" length when threaded onto both ends of meter
  • Extends 7.5" long meter to 9" long (Upsizing threads one size from 1/2" AWWA meter threads to 3/4" AWWA meter threads)
  • Includes 1 internal composite gasket
  • TWO Adapters Required per meter - sold as a set of 2 only.

To Use:

  • Remove Old Meter - 3/4" x 9"
  • Install New Meter - 5/8" x 1/2" meter with this adapter installed on both ends.
  • No change necessary to meter setter or plumbing.

Cross References: Ford Meter Box # A13 or A13-NL, Trumbull 368-0642, 

Note: This does NOT fit a 5/8" x 3/4" meter. Adapters for 5/8" x 3/4" are in our other listings.

Threads are AWWA (American Water Works Association) Spec straight water meter threads - They are not NPT pipe threads