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changing a 150Psi PRV to a 30Psi Prv for radiant HW tank?

mstrbill Member Posts: 32
Ive seen many plumbers use domestic HW tanks for radiant systems but never seen them change the PRV RELIEF valve to 30 PSI type . Should the valve be changed to the correct size for the system to properly protect all components or leave it at 150 psi ? My thought is to change it to match the system served .


  • Ironman
    Ironman Member Posts: 6,566
    Change It

    But a water heater is a very poor an incorrect choice for space heating.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
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