Plastrulon Processors Ltd.
- Manufacturer of plastic lined, corrosion resistant components for use in chemical processing and associated industries. Includes pipes, valves, vessels, columns, molded parts, and custom-built items.
- http://www.plastrulon.com/

Raj Plastic Industries
- Manufactures plastic ball, gate, check, diagraphm valves and fittings for agricultural applications.
- http://www.rajandraj.com

P.E.P.
- Manufactures plastic fluid and fume handling pipes, valves, and fittings.
- http://www.pep-plastic.com

MPC Valves
- Specializing in plastic check valves, one way valves and delay valves for automotive and other uses.
- http://www.mpcvalves.com

Unp. Polyvalves (I) Pvt. Ltd.
- Manufacturers of various types of industrial application valves made with plastic material.
- http://www.plastic-valves.com/

Plast-O-Matic Valves, Inc.
- Supplies plastic valves and controls for industrial corrosive and ultra-pure liquid process.
- http://www.plastomatic.com

Stra-Val
- Manufacturer of high and low back pressure regulators, relief valves and strainers in different alloys and plastic materials.
- http://stra-val.com

Balta Corporation
- Manufacturer of spring loaded high tech plastic composition check valves and other fluid power products.
- http://www.baltacorp.com