Mixing valve ESBE VRG133 DN20 6,3 CPF 22MM The Esbe VRG133 is part of the Esbe VRG130 series. 3-way valves suitable for mixing or operation control. The valves are made of high quality brass that can be used in heating and cooling applications. The VRG series is available on the DN15-50. The valve is complete in combination with ESBE actuators and controls.