Differential Pressure Regulator Lrl-M5-Qs-4 Without Manometer, With Male Thread And Qs Plug Connector. Controller Function=(* Differential Pressure, Constant, * With Return Flow), Pneumatic Connection, Port 1=M5, Pneumatic Connection, Port 2=Qs-4, Mounting Type=Threaded, Nominal Flow Rate Open=30 L/Min