Technical Articles
Plastic Valves 101
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If you aren’t familiar with Plast-O-Matic or engineered industrial thermoplastics at all, this is the best place to start.
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Specifically, what is a plastic valve?
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The Why, When & Where of Plastic Valves
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Valve terms & acronyms explained
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U-cups, o-rings, rolling diaphragms, spools… Advantages, disadvantages & brief explanation of each type
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Do’s & Don’ts for making socket connections in PVC & CPVC
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Do’s & Don’ts for mak ing threaded connections in plastic valves
Applications
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Downloadable .pdf versions of the Application Bulletins found in our popular “Applications 3-Ring Binder.” These are in the same numerical order used in the binder.
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系列EBV在乙二醇系统解决腐蚀问题at Edna Valley Vineyards.
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CKS Valve Ends Backflow Troubles in R. O. System
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Thread Sealant Compatibility Issues with Plastic Piping at Semiconductor Fab
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Water Utility Corrosion Problems Solved in Jacksonville, Florida using Plast-O-Matic solenoid valves, check valves, and gauge guards.
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Sight Glass used to monitor leakage in double containment piping system
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Vacuum Breaker prevents implosion in intermediate bulk containers
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Pilot Solenoid Valves used for water treatment at Bremerton Public Works
Published Articles
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Assessing the ways air can enter a liquid piping system, and how to remove it. Water & Wastes Digest, August 2016.
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Overview of valves and valve materials used in ultra high purity DI water systems. Originally published by Robert Sinclair; updated April 2022
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Effect on centrifugal pump efficiencies, MTBF, and energy use. Modern Pumping Today, June 2013
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A Plast-O-Matic thermoplastic control valve was compared side by side to a metal control valve and was found to be 80% more accurate than its metal counterpart.
WaterWorld Magazine, March 2013. -
Describes POM’s continuing efforts to improve mitigation of particle contamination in PVDF materials, and current test results.
Ultrapure Water Journal, June 2013. -
最初的发现和努力改善报告mitigation of particle contamination in PVDF materials, resulting in the cleanest pressure regulators available.
Ultrapure Water Journal, June 2012.
Valve Body & Seal Materials
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to materials used in plastic valves
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Update regarding color variations in Kynar PVDF for ultrapure liquids
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BSP threaded products have minimum order requirements.
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Polyvinyl chloride. Plast-O-Matic uses Type 1, Grade 1, Cell Class 12454 per ASTM D1784
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Chlorinated polyvinyl chloride. Plast-O-Matic uses Type IV Grade 1, Cell Class 23447 (min.) per ASTM D1784
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Polyvinylideneflouride. Plast-O-Matic uses various formulas of Kynar® PVDF depending on the application.
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Polypropylene. Plast-O-Matic uses Natural, unpigmented homopolymer & copolymer polypropylene, as well as glass-filled polypropylene.
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Polytetrafluoroethylene. A high purity fluoropolymer. Teflon® is a popular brand of fluoropolymers.
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Polyphenylene ether blended with polystyrene. Plast-O-Matic uses Noryl GFN1.
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Fluoro rubber. Viton® is a popular brand of FKM.
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Ethylene Propylene Diene Monomer. An olefinic thermoplastic elastomer.
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Buna-nitrile rubber.
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Tetrafluoroethylene/propylene dipolymer.
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Perfluoroelastomer
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used in Series FS & FSA Flow Switches
Valve Pressure Loss & Flow Properties
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Causes, effects, & calculating potential water hammer
Types of Valves Explained
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What, how, where & why of degassing valves, with technical details, explanation of function, installation notes, dimensions, and more
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Plast-O-Matic® brand chemical flow and level indicators offer a safe and economical means of indicating flow, clarity , or exact level of extremely corrosive and ultra-pure liquids such as sulphuric acid, hydrochloric acid, chlorine, caustics, and demineralized water
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Explains why some valves in Series RVT have “solid” machined bodies and others are fabricated.
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What’s the difference?
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Description and specifications for 3″ & 4″ Pressure Regulators
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Limit Switches signal the open or closed position of air actuated ball valves
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What is a “trunnion?” and how it relates to a ball valve
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Normally-Closed Valves, Normally-Open Valves, and Valves that can be Converted between Normally-Open and Normally-Closed
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thermoplastic vacuum breakers will last almost indefinitely with proper maintenance and regular seal/diaphragm replacement.
Considerations for Various Applications
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for sodium hypochlorite (bleach)
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how to determine if your system requires an air release valve, a degassing valve, or both
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Which is better for your application?
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Which is better for your application?
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There are many variables that affect success or failure of a particular valve material with any given liquid….
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Which is better for your application?
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PDF file provides quick look up & verification