The most compact six-way zone valve in the HVAC industry with QM (Quick Mounting) assembly between the valve and the actuator, and directly connect to the flexible hoses. The six-way zone valve allows you to manage the supply to a single user from two different sources of thermal energy, or to easily manage 4-pipe systems […]

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Dampers make up a critical part of HVAC systems and getting the selection right is vital to long term performance. Here’s what you need to know to choose the right damper. The basics Dampers are used to control airflow through certain portions of an HVAC system. You may need them to open and close or […]

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NOMINAL DIAMETER The nominal diameter is indicated on the body of the valve in inches or by “DN” followed by the value is mm unit of measure, which corresponds to the size expressed in the inches, e.g.: DN20 is equivalent to ¾ inch NPT or BSP connection. 2.    EFFECTIVE DIAMETER The effective diameter indicates the actual port diameter […]

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