Regulator with Built-in Pressure Gauge Series ARG Regulator with Built-in Pressure Gauge with Backflow Function Series ARG�ｭK Model ARG20 ARG30 ARG40 ARG20K ARG30K ARG40K Pages 562 to 565 Pages 566 to 570 Port size 1/8, 1/4 1/4, 3/8 1/4, 3/8, 1/2 1/8, 1/4 1/4, 3/8 1/4, 3/8, 1/2 Accessory Bracket Set nut for changing the mounting angle of pressure gauges 561 Modular Type Regulator with Built-in Pressure Gauge Series ARG AC-A AF-A AF�ｮ-A AR-A AL-A AW-A AC AF AF�ｮ AR AL AW�ｮ A�ｮG E�ｮ AV AF