CS201 Coupling Set & ST201 Spacer Tube Overview and Documents

Roles: Admin, Technician
Last Updated: March 2021

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Coupling Set & Spacer Tube

The CS201 Coupling Set can be used along with the ST201 Spacer Tube during initial plumbing installation. When the plumbing has been completed and the lines have been flushed, the Spacer Tube is removed and replaced with the M201 water meter (also compatible with other 7.5" water meters with 1" thread).

Model Numbers

Model Number




Coupling Set

3/4" Meter coupling with gasket            


Spacer Tube

Pre-installation spacer tube for standard 7.5" meters

Coupling Set Specifications

  • Standard 3/4" meter coupling
  • 1" NPSM Thread
  • NSF/ANSI 61 & 372 Certified

Spacer Tube Specifications

  • 1" diameter x 7.5" length
  • Maximum working temperature is 194°F
  • Maximum working pressure is 150 PSI

Specifications and Help Documents

Document Title


Meter Coupling and Spacer Tube Specification Sheet