VM 2 and VB 2 are two-way valves designed to work with Danfoss electric actuators AMV(E) 10, AMV(E) 20, AMV(E) 30 or Danfoss electric actuators with spring return function AMV(E) 13, AMV(E) 23 and AMV(E) 33. These VM 2 and VB 2 valves are generally recommended for use in most demanding conditions in systems such as: district heating, heating and hot water service with heat exchanger or storage tank where they ensure long and unproblematic performance.