

The Isolation Flange The Isolator Uniflange Ball Valve (Part Number: H-40404) is a heavy-duty forged brass construction for hydronic system applications. size of 1" IPS x Flange and a full port for full flow at 600 WOG, 150 WSP, this valve prevents electrolysis and galvanic corrosion. Models R55-637 through R55-641 include a quick quarter-turn ball valve purge/drain feature. Compatible with high-velocity pump applications.