Plast-O-Matic Valves Inc. engineers and manufactures a line of plastic valves that are resistant to nitric acid, hydrochloric acid, phosphoric acid, sulfuric acid, and other chemical process liquids. The company's line of valves includes: air release and degassing valves, ball valves, check valves, diaphragm valves, diverter valves, drain valves, flow control valves, manifold valves, multiport valves, and pinch valves.

Magnatrol Valve Corp. manufactures 2-way bronze and stainless steel industrial solenoid valves that are resistant to corrosive fluids and acids. The valves are used in process control applications, and are available in sizes from 1/4" to 3" - and up to 500 psig. The acid resistant valves are also available in normally close or normally open configurations.