5-way solenoid valves are just like four-way valves except for the addition of the second exhaust port. In addition they act as a directional control valve which makes it possible for stream on one line although venting another. Every single line has an independent exhaust port. ชุดกรองลม ข้อต่อลม กระบอกนิวเมติกส์ เกจวัดความดัน https://ball-valve65297.pointblog.net/Top-Guidelines-Of-Rotameter-54541388