Resideo V8043B1027 Valve

Valve, Zone, 2 Way Normally Open, 3/4', Sweat, 24Vac,, 3/4" sweat two-way normally open quick fit zone valve,hydronic control, 24v, spring return to open, brass body, stainless steel stem, brass seat,18" leads, 20 pound maximum closeoff pressure, 3.5cv