Danfoss RA-N 20 3/4" Vertical Angled Radiator Valve Body with Pre-Setting for 2 Pipe Systems

RA-N are uni-directional valves with integrated pre-setting. Pre-setting allows the commissioning engineer to precisely set the flow rate through the valve by adjusting the valve capacity to match the radiator heat output requirement. Pre-setting is carried out by setting a calibrated orifice within the valve. The setting is achieved by turning a scale located in the top part of the valve body. The setting mechanism is concealed once the thermostat sensor is fitted. This type of pre-setting is significantly more accurate than that possible with conventional lockshield valves. When pre-setting valves are used the role of the lockshield valve is simply to provide isolation for radiator removal.