BELIMO BU6150L+SY3-230-3-T

The BU6150L+SY3‑230‑3‑T is engineered to solve a common challenge in HVAC, water supply, and chilled/hot water systems: how to reliably control large flow volumes while ensuring tight shut‑off, durability, and minimal maintenance. The DN150 butterfly valve of the BU6150L series offers a strong, leak‑tight seal thanks to its stainless‑steel disc and resilient EPDM seat — ideal for water, hot water, chilled water or water/glycol mixes. This makes the valve suitable for building heating/cooling loops, water distribution, or process circuits.

Paired with the SY3‑230‑3‑T actuator — a 150 Nm high‑torque electric rotary actuator — the assembly becomes a powerful, ready-to-use control valve. The actuator runs on standard 230 V AC, supporting simple on/off (or 3‑point) control, while its IP67‑rated cast‑aluminum housing makes it resistant to dust, water exposure, and harsh mechanical environments. The integrated manual hand‑wheel provides override functionality — useful for maintenance or emergency operation when power is absent. Compared to manual valves or lower‑torque actuated valves, the BU6150L+SY3‑230‑3‑T ensures secure shut‑off under pressure and smooth operation even under heavy load, offering long-term reliability in demanding commercial or industrial applications.