PRESSURE REGULATOR MS4-LR-1/4-D7-AS 12 BAR MAXIMUM OUTPUT PRESSURE, WITH PRESSURE GAUGE, LOCKABLE REGULATOR HEAD, DIRECTION OF FLOW: FROM LEFT TO RIGHT. SIZE=4, SERIES=MS, ACTUATOR LOCK=(* ROTARY KNOB WITH LOCK, * WITH ACCESSORIES, LOCKABLE), ASSEMBLY POSITION=ANY, DESIGN STRUCTURE=DIRECTLY-CONTROLLED DIAPHRAGM REGULATOR