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expansion vessel sizing for booster pump

  • 23-07-2016 1:37pm
    #1
    tipperary
    Registered Users, Registered Users 2 Posts: 447 ✭✭


    Hi,
    we have a Grundfos MQ 3 booster pump pressurising the supply to our showers, basins etc. The pump is connected to a pressure vessel. Unfortunately the bladder on the vessel is gone, and there is water leaking from the relief valve every time the pump shuts down. Recharging the vessel only helps for a little while, before the problem starts again. I am planning to replace the vessel.
    Is there any guidance on how these vessels should be sized? The existing vessel was 50 litres, but I am not sure if this is an appropriate size or not?
    Thanks for any help.


Comments

  • #2
    K.Flyer
    Registered Users, Registered Users 2 Posts: 8,565 ✭✭✭K.Flyer


    50 litres is plenty enough capacity for one domestic installation.
    You can replace like for like, but a 25 litre should be sufficient if you prefer to go smaller.


  • #3
    hatchman
    Registered Users, Registered Users 2 Posts: 317 ✭✭hatchman


    Would bigger not be better ? Less pump cycles less ware and tear on pump.


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