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Technical Articles
January 19, 2016

PPO

NORYL® PPO (Type GFN1; Polyphenylene ether + Polystyrene, 10% glass fiber filled)

This modified polyphenylene blend offers excellent physical properties, low moisture absorption, and in-service temperatures up to 180°F (82°C). Plast-O-Matic uses Noryl GFN1 as a body material in level and flow switches. Noryl is joined by threading, and provides excellent chemical resistance to a wide variety of acids, alkalies, salt solutions and many other chemicals. It is attacked, however, by petroleum products, as well as some solvents, aromatics and chlorinated organic compounds.

  • Please click here for a chemical resistance chart.
    Note this is information supplied by the resin manufacturer. Plast-O-Matic does not guarantee chemical compatibility; end user is responsible for ultimate determination of chemical compatibility. It is important to note that any information obtained should be used only as a guide. In many cases a physical test of the material under operating conditions is the only way to ensure the success of a particular material for that application.

PYREX® (borosilicate glass)

This low alkali glass is used on sight glasses and level indicators. It resists attack from most bases and acids with the exception of hydrofluoric acid and sodium hydroxide. It is the same material used in glass piping systems in the food, beverage, chemical, and pharmaceutical industries.

  • Please click here for a material safety data sheet
    (External website hosted by Corning Glass. Plast-O-Matic does not guarantee chemical compatibility; end user is responsible for ultimate determination of chemical compatibility. It is important to note that any information obtained should be used only as a guide. In many cases a physical test of the material under operating conditions is the only way to ensure the success of a particular material for that application.)

IMPORTANT: It should be noted that plastic pipe and fittings have varying resistance to weathering. PVC for example undergoes surface oxidation and embrittlement with exposure to sunlight over a period of several years. Also, ultraviolet sterilizers for killing bacteria in deionized water are becoming common and the intense light generated will, over time, stress-crack PVC piping & fittings that are directly connected to the sterilizer.