To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Need to contact us? Visit

Hot Water Boiler Extrol and Fill Valve


Could someone tell me if the pressure setting of the fill valve (Watts SB1156F) and the charge pressure of the Extrol tank should be the same or how should it be set up. The valve came preset to 15 psi and the tank (size 60) is precharged to 12.

The house is a two story cape with only one zone.




  • SWEISWEI Member Posts: 7,356
    edited June 2013
    Both should be the same

    And set to the design pressure of the system.  15# is about right for a two story house -- unless the distance from the low point of the system to the high point is over 23 feet.

    Design pressure (minimum) = distance between those points times 0.434 plus 5 pounds.
  • Old_Navy_BTOld_Navy_BT Member Posts: 2

    No more dripping relief valve.
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!