valemo v2323-a1s motorized zone valve, 2-way, 3/4" threaded npt, normally closed, 24 vac with end switch, pex adapter ready valemo <p>superior performance, durable construction, valve body forged brass. actuator with all metal gears inside, corrosion-resistant stainless steel housing. controlling water flow in hydronic heating or cooling systems.</p><p>npt threaded zone valves are common in homes and buildings built with galvanized pipe. npt threaded zone valves are growing in popularity for homes and buildings using pex plumbing. simply thread in the pex fitting adapter for the pex type and brand of your preference.</p><p>power supply 24v 60hz, with end switch for optional signal feedback, normally closed (nc), 2-way 3/4", threaded npt connection, lead wire 18".</p><p> perfect replacement for any of the following existing zone valve installations:<br /> - honeywell: v8043, v8044, v2031a,b, v8031a,b, v8343a,b<br /> - erie/schneider: vt2312 vt2313 vt2315 vt2317<br /> - barber colman: va1403<br /> - bell & gossett: tev 3/4, mi, 109020 & 109031<br /> - flair: vj1c2, vj2c2, v2aca, vj1b2, vj1e2, vj2d2, vj020<br /> - taco: 556, 557, 571, 548a, 545 <br /> - erie: 0765, 0767, 635b8-18a-8, 635b307-18a1, 635b307-18a0, 601, 607, 612, 621, 627 and 647<br /> - superior: ua182<br /> - white rodgers: 1361-102, 13a01-102, 13a02-102, 13a02-102, 13a03-1, 12, 1311-103, 1361-103<br /> - detroit: zv200, zv210