Accu-Sync - Pressure Testing

The Accu-Sync compares the pressure on the top side of the diaphragm (main water supply pressure) to the downstream pressure.  Pressure is adjusted by the unit forcing the diaphragm downward until the desired pressure is achieved.  The Accu-Sync automatically adjusts to main water supply pressure changes.  To properly set the dynamic pressure (running pressure) on the lateral line with Accu-Sync installed, we recommend doing so using our MP Guage on the last head of the line.  You can purchase a Hunter MP Gauge Assembly (shown below at farthest head) to accurately check the pressure. 

IMPORTANT: Required static dynamic differential - 15 PSI

See instructions and illustration below:

  1. Make sure zone is off and the line is not pressurized.
  2. Remove the nozzle on the last head by turning counterclockwise.
  3. Thread the MP Gauge tee (female end) on the riser by turning clockwise until hand tightened.
  4. Next, thread the Gauge on to the perpendicular side of the tee.
  5. Lastly, thread the nozzle on the top end of the tee and adjust accordingly.

System can now be turned on manually to read the running pressure at the gauge.

Note: In the event you have squealing in the valve, be sure you have the right amount of flow going through the valve.  See chart below for flow details.


Accu-Sync Valve Recommended Flow Range
Valve Flow (GPM)
SRV-100 5 to 40
PGV-100/101 5 to 40
PGV-151 20 to 120
PGV-201 40 to 150
ICV-101 5 to 40
ICV-151 20 to 150
ICV-201 40 to 200
ICV-301 150 to 300
IBV-101 5 to 40
IBV-151 20 to 150
IBV-201 40 to 200
IBV-301 150 to 300


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