Description

APPLICATION The DRxxGMLA / DRxxxGFLA rotary valves provide water temperature control in heating and air conditioning applications. These valves are designed for accurate mixing control of supply water temperature in heating and air conditioning systems. Its sturdy construction ensures a long and reliable operating life when used in combination with M6061/VMM and M7061/VRM actuators. FEATURES • Chrome-plated plug for long life. • Optimized characteristic for supply water temperature control • Protected against corrosion and blocking • Reliable mounting for electrical actuators • Clear position indicator • Wide range of flow rates with suitable actuators Description FEATURES • Chrome-plated plug for long life. • Optimized characteristic for supply water temperature control • Protected against corrosion and blocking • Reliable mounting for electrical actuators • Clear position indicator • Wide range of flow rates with suitable actuators SPECIFICATIONS Nominal static pressure:6 bar, 600kPa Maximum pressure drop: depending on type (see section “Specification and Order Number” on page 2) Leakage rate: 1% of kvs Ports: Internal threads / flange in accordance with DIN EN 1092-2 depending on type (see section “Specification and Order Number” on page 2) Angle of rotation :90 ° Internal threads: 8 windings long Packing: Double o-ring sealing Material body: Cast iron Material inner parts: Chrome-plated cast iron Medium: Heating water according to VDI 2035 (oxygen concentration less than 0.2 g/m3 , pH 8…9.5), glycol-water mixtures (max. 50% glycol) Water temperatures: in the valve 2 to 130 °C, non-condensing Weight: depend on type (see sections “Dimensions with DRxxGMLA (mm)” and “Dimensions with DRxxxGFLA (mm)” on page 3) Flow characteristic :equal percentage