valemo v2212-a1s motorized zone valve, 2-way, 1/2"sweat, normally closed, 24 vac with optional end switch valemo superior performance, durable construction, valve body forged brass, actuator with all metal gears inside and corrosion-resistant stainless steel housing. controlling flow of water in hydronic heating or cooling systems, normally closed (nc), 24v power supply, includes end switch for signal feedback and control. 1/2" soldering/sweat connections. frequency - 50/60 hz. wire length - 18" </p>perfect replacement for any of the following zone valve installations: <br>- honeywell: v8043, v8044, v2031a,b, v8031a,b, v8343a,b <br>- belimo <br>- caleffi <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