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ITEM #: 6377482 Features a blowoutproof stem with double EPDM O-ring seals, a union with an EPDM O-ring seal, an adjustable memory stop, and dual pressure/temperature ports. Valve has a brass venturi flow element for greater accuracy and allows for manual balancing and shut-off. For use in commercial and residential hydronic heating and cooling applications. This listing is for each.
NuTech - MB1E-1B-050S-050S - 1/2 in Sweat Manual Balancing Valve, Flow Range 1.3 to 4.0 gpm