About

Solving pressure & flow control problems for a variety of applications.

Founded in 1967, Plast-O-Matic Valves strives to continually advance the technology of liquid pressure and flow control. As the quality leader in the development of plastic valves and controls for corrosive and ultra-pure liquids, Plast-O-Matic provides a complete line of standard and custom designed solutions for difficult applications. They are committed to product innovation, engineering excellence, precision manufacturing, 100% quality testing, and hands-on technical assistance.
  • D.I. (deionized) & reverse-osmosis water
  • Potable water & wastewater treatment including sodium hypochlorite (bleach), sodium hydroxide, flouride, sewage
  • Chemical processes including sodium hypochlorite, nitric acid, hydrochloric acid, phosphoric acid, sulfuric acid, solvents, chlorine, hydrogen peroxide, ethylene glycol, seawater, detergents, brine, oil, flouride, ferric chloride, sodium bisulfate, ferric sulfate, calcium chloride
  • Plastic valves and actuators designed for semiconductor fabrication, pharmaceutical processes, dialysis (sodium bicarbonate), battery filling, chemical injection, metal finishing, food & beverage, printed circuit board fabrication...virtually any demanding liquid process
Plast-O-Matic Valves, Inc.
Plastic Valves and Controls
Quality Engineered for Corrosive and Ultra-Pure Liquids.




Product Catalog

Air Valves
(18 Products)
Ball Valves
(425 Products)
Check Valves
(98 Products)
Chemical Pumps
(16 Products)
Control Valves
(16 Products)
Diaphragm Seals
(42 Products)


Technical Articles

5 Most Common Mistakes When Specifying Valves (Valves) It behooves all parties involved to ask a few simple questions, and prevent the mistakes that can lead to disaster in a flow control system. (View Full Article)
Fail-Safe Valves (Valves) Fail-Safe Valves Explained... (View Full Article)