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Heat shaking the house!

Gary cottam
Gary cottam Member Posts: 1
in THE MAIN WALL
A customer of mine has a HB Smith hot water boiler model GB100W-5 with (1) 007 pump on the return and (2) honeywell 3/4" zone valves on the supply.The supply piping out of the boiler is 1 1/4" then reduces down to 1/2" copper w/ bushings to the 3/4" zone valves. The piping to all radiation supply and return is 1/2". Problem: When 1 zone valve shuts the valve slams closed and shakes the entire system. How can i rectify this problem so i don't "rock the boat" with my customer?
Thanks,
Gary Cottam

Comments

  • ScottMP
    ScottMP Member Posts: 5,883
    Gary

    I would suggest either a Preasure differtial valve to allow a bypass when the valves are closing.

    Replacing the zone valves with slow closing Taco valves

    Repiping the system to circulators

    Just a few

    Scott

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  • Einsiedler
    Einsiedler Member Posts: 61
    bckwrds

    ensure the existing valves are in proper flow direction.

  • Robert O'Connor_7
    Robert O'Connor_7 Member Posts: 688
    ENOZ

    sounds like its in backwards. BOC
  • BillW@honeywell
    BillW@honeywell Member Posts: 1,099
    Sometimes I feel like a broken record...

    but here it is again. Just like the others said, make sure the flow is in he direction of the arrows cast into the valve body. Your piping may not be well supported, try adding some extra straps to hold it up. Your pump may be too big, and Scott's idea of a differential pressure valve is a good one, ours is a D146, in 3/4 & 1 1/4 sizes. You will need to make some piping changes if you use it. If none of these work, try removing ONE spring from the motor as a last resort
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