The Model VSR-SG is a vane type waterflow switch for use on wet sprinkler systems using CPVC plastic fittings. It is equipped with a union to accommodate installation in confined spaces.

The Model VSR-ST is a vane type waterflow switch for use on wet sprinkler systems. It is equipped with a union to accommodate installation in confined spaces.

Unique Features

• VSR-SG, The only flowswitch for CPVC pipe
• Union coupling allows for installation in areas where there isn't room to screw the device into a fitting
• Fits all CPVC (VSR-SG) and threaded tees (VSR-ST) from 1" - 2"

Codes and Approvals

• UL, cUL, CSFM
• Service use; NFPA 13, 13D, 13R and 72

Engineering Features

• Allows for faster easier installation
• The union coupling allows them to be installed in a standard 2 x 4 wall with drywall already installed on one side

Installation Tips

• VSR-SG - Glue the male coupling into the CPVC tee making sure the coupling bottoms out into the tee
• VSR-SG - Make sure the glue is dry before installing the flowswitch
• VSR-SG & VSR-ST - Verify that the o-ring is properly positioned in its groove in the union coupling

Tech Tips

• Pay attention to the wiring diagram. The device does not require power to operate. It is just a switch. Wiring it to operate a bell is the same as wiring a light switch to turn on a light
• The Bull portion of the tee where the flowswitch installs must be factory 1", reducers are not allowed. The Run portion of the tee can be from 1" - 2"
• VSR-ST, screw the fitting into the tee until there is approximately 1/2" clearance between the top of the tee to the bottom of the threads on the fitting

Additional Information

• Potter also makes CPVC risers that fit in standard 2 x 4 wall construction. The risers are from 1" - 2" and are complete with VSR-SG, test/drain valve and pressure gauge

Click here to view the VSR-SG datasheet.

Click here to view the VSR-ST datasheet.

For additional questions, contact customer service: sales@pottersignal.com, or tech support: tech@pottersignal.com