Product overview

The DRG 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 VMM and VRM actuators.

  • Cast iron body with flanged end connections (type GFLA)
  • Cast iron body with internal threaded end connections (type GMLA)
  • 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
  • Materials: Housing made of cast iron, inner parts made of chrome-plated cast iron
  • Packing: Double O-ring sealing

Specifications

Application For supply water, heating and air conditioning; hot/cold water quality VDI2035; glycol water mixture 50%.
Connection Type Flanged
DN Size DN 20
Torque 20 Nm
Valve Type 3-Way mixing rotary valve
Delta P (Max) 100 kPa
Differential pressure for close-off (Max) 100 kPa for 20 Nm
Media Temperature (Max) 130 °C
Media Temperature (Min) 2 °C
Controlled Media Water, Water-Glycol Mixture according to VDI 2035
Seal Type Double o-ring sealing
Series DRG
Stroke (Max) 6.5 mm
Angle of Rotation 90 °C
Nominal Pressure PN 6
Flow Coefficient (Max) 6,3 Kvs
Valve Flow Characteristic Modified equal percentage
Kvs Value 6,3