Service unit combination LFR-3/4-D-MAXI-KD-A consisting of filter regulator, on/off valve with solenoid coil 24 V DC, without socket,, and pressure build-up valve, with mounting brackets. With automatic condensate drain. Size=Maxi, Series=D, Actuator lock=Rotary knob with lock, Assembly position=Vertical +/- 5?, Grade of filtration=40 ?m