Inline Industries: Ball Valve Inline Industries, Inc. designs and manufactures stainless steel ball valves, pneumatic and electric actuators, and valve accessories. We have a broad selection of multi-port ball valves and an except Inline Industries, Inc. designs and manufactures stainless steel ball valves, pneumatic and electric actuators, and valve accessories. We have a broad selection of multi-port ball valves and an exceptional line of sanitary valves. The headquarters are located in Rosemead, California with sales networks all over the United States.