T.A.C. Schneider VB-7313-0-4-4 Three-Way Mixing Valve

Schneider Electric TAC VB-7313-0-4-4 is a 1/2 in. full-port, three-way mixing valve with NPT threaded connections, designed for hot or chilled water service in hydronic systems. The bronze-bodied valve uses bronze seats, a stainless steel stem, brass plug, and spring-loaded PTFE packing, with end fittings that are NPT threaded for reliable installation. This model, VB-7313-0-4-4, provides a flow rating of 4.4 GPM (Cv 4.4, Kv ≈ 3.8 m³/h) and is part of the VB-7313 family whose 1/2 in. size ranges include the VB-7313-0-4-2 (Cv 2.2) and VB-7313-0-4-4 (Cv 4.4). It is rated for ANSI pressure class 250 (up to 400 psig below 150°F) and supports control media temperatures from 20 to 281°F (-7 to 138°C) with a maximum differential pressure of 35 psi. In the VB-7313 series, port AB is the side-mounted common port, while ports A and B serve as the inlets, enabling controlled mixing of two input streams to the common outlet for precise temperature management.