NIBCO 1 in. Forged Brass Lead-Free Sweat Isolator Full Port Ball Valve with Rotating Flange and Adjustable Packing Gland

Item # 303136786 | NIBCO Part # 51404W | UPC Code 018394004160 | UNSPSC Code 40140000
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Product Overview

All the features you trust from the original Isolator Uni-Flange ball valve, plus a 360° rotating flange that allows for orientation to any degree necessary for your installation. This forged brass full port ball valve features a blow-out proof stem, adjustable packing glands and a stainless steel snap ring for extra stability during installation. The only way to isolate circulator pumps.

  • Conical inlet to minimize turbulence
  • Replaces 3-components, eliminates 2-leak paths, saves approximately 20 minutes in labor
  • Fits virtually any standard circulator pump
  • Available with slotted holes for high velocity pumps
  • Prevents electrolysis
  • Eliminates galvanic corrosion



Webstone, a brand of NIBCO warrants all of its products to be free from manufacturing defects in material and/or workmanship for the life of the product provided they are professionally installed and operated under normal conditions. Webstone will replace, FREE OF CHARGE, any product or part thereof that proves defective in material and/or workmanship under normal installation, use and service.