Precision Pressure Regulator Lrp-1/4-0,7-Ex4 Without Pressure Gauge, Suitable For Use In Accordance With Atex Certification By Festo For Zones 1, 2 And 21, 22. Size=50, Actuator Lock=Rotary Knob With Lock, Assembly Position=Any, Design Structure=Piloted Precision Diaphragm Regulator, Controller Function=(* Output Pressure Constant, * With Secondary Exhaust)