Precision Pressure Regulator Lrps-1/4-4 Without Pressure Gauge, With Lockable Regulator Head. Actuator Lock=Rotary Knob With Integrated Lock, Assembly Position=Any, Design Structure=Piloted Precision Diaphragm Regulator, Controller Function=(* Output Pressure Constant, * With Secondary Exhaust), Pressure Gauge=Prepared For G1/8