Collection:3-Way Electric On/Off Brass Ball Valves

Explore Tameson's wide range of 3-way brass electric ball valves from leading global manufacturers. Also known as 3-way motorized ball valves, they consist of two main components: an electric actuator and a ball valve. The actuator connects directly to the valve stem and rotates the ball 90° (a quarter turn) to control the flow of media - liquids or gases - through the valve's three ports.

A 3-way electric ball valve has three ports and a ball with a bore that controls how media flows between them. Two bore designs are available: L-port and T-port, named after the shape of the flow path inside the ball.

A T-port valve can mix media from two inlets into one outlet, or distribute one inlet to two outlets. An L-port valve redirects flow rather than mixing it - for example, connecting one of two tank inputs to a single outlet, so you always have output flow but can choose which tank supplies it. Because the actuator only rotates 90°, electric L-port and T-port valves switch only between two positions. Because port connections differ between designs, always check the bore design to get the flow pattern you need.

These 3-way electric ball valves can be controlled remotely to switch between circuits, making them a practical way to automate flow control where electrical power is already available.

Brass is an alloy of copper and zinc, giving the valve housing strong mechanical properties and good resistance to contaminated media, so it seals reliably even with dirty media. However, brass is not suitable for salt water or distilled water, as these can cause dezincification. Dezincification removes zinc from the brass alloy, leaving a porous structure that reduces its mechanical strength. Outside of these media, brass ball valves work well with drinking water, gas, mineral oils, compressed air, and many other non-aggressive media. They withstand high pressure, high temperature, and high flow rates, and keep sealing reliably over their lifespan, even after long periods without use. Their simple, robust design also keeps maintenance needs low, making them an economical choice for residential and industrial applications.

In HVAC systems, 3-way electric brass ball valves are often used as zone valves, mixing or diverting flow between circuits to improve energy efficiency and climate control.