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Taco zone valve

Housedoc Member Posts: 66
This is technically not a radiant question, but it is related. Does anyone know the difference between a taco 557 zone valve and the geothermal version 557g?


  • Joe Mattiello
    Joe Mattiello Member Posts: 630
    Taco zone valve

    The 557g materials of construction is different making it durable for open systems; mainly geothermal systems. The 557 is a high shut off head valve at 150 ft/hd
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
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