Resideo V8043E1004 Valve

Valve, Zone, 2 Way Normally Closed, 1/2', 12', Sweat, 24Vac,, 1/2" sweat two-way normally closed zone valve, 24v, spring return to close, brass body, stainless steel stem, brass seat,18" leads, manual opener, 20 pound maximum closeoff pressure, normally open spst auxiliary switch, 3.5cv