The AB-QM temperature control valve provides pressure independent regulation of flow while also providing flow limiting system balance. The valve internally contains a unique differential pressure regulator which automatically adjusts to normal changes in system pressure from valves opening and closing or changing of pump speed. As a result of maintaining a constant pressure for the control valve, valve authority is maintained at 100% allowing for precise interaction with the temperature controller and unparalleled system operation as indicated by maintenance of the highest possible coil log mean temperature difference (Delta T). The valve is easily set and adjusted to provide the prescise flow required for the required control. Design calculation and commissioning effort normally required for control and balance valves are virtually eliminated because of its automatic pressure control regulator. A wide selection of actuators is available for the AB-QM, making it an ideal selection for the simplest of two position control strategies to the most precise modulating control required for variable speed pump optimization.

FEATURES

• AB-QM maintains stable control flow through its range of operation reacting quickly to changes is system pressure
• 100% built-in control valve authority allows lower pump head than traditional valves and reduces energy consumption
• Three required valve functions; control, balance and flow limitation in one compact valve design
• Flow parameter is the only consideration, reducing valve selection engineering
• "Set & forget" approach for setting flow limitation

BENEFITS

• The AB-QM valve combines two functions: Balance & Control decreasing involved installation costs
• Through the automatic flow limiting function, commissioning costs are reduced
• Easy adjustability allows late change in design flows without high costs
• "Plug and Play" for quick setup and balancing allowing immediate start up fo unit
• Commissioning accomplished without use of specialized equipment
• Compact design allows installations in areas with limited space such as stand alone fan coils