valemo v2313-a1s motorized zone valve, 2-way, 3/4" sweat, normally closed, 24 vac with end switch valemo 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> power supply 24v 60hz, with end switch for optional signal feedback, normally closed (nc), 2-way 3/4", soldering/sweat connection, lead wire 18".</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<br>