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Guangzhou fangshi instruments co., ltd-comparison of lining performance of electromagnetic flowmeter

Lining material

main performance

Temperature

 Media comparison

Natural rubber (soft rubber)

Good elasticity, wear resistance and breaking force;


Resistant to general weak acid, weak alkali corrosion, hydrochloric acid, acetic acid, oxalic acid under high temperature.


80℃~90℃

Measuring water and sewage

Acid resistant rubber (hard rubber)

Ammonia, phosphoric acid and 50% sulfuric acid, sodium hydroxide, potassium hydroxide corrosion, but not resistant to oxidant corrosion

-25~+90℃

Test general acid, alkali and salt solutions

Neoprene

1. Excellent elasticity, high breaking force and good wear resistance.  2. It is resistant to the corrosion of low concentration acid and alkali and salt solution, but it is not resistant to the corrosion of oxidizing medium.

<80℃

Measuring water, sewage, mud and ore pulp

polyurethane rubber

  • Excellent wear resistance;


  • Poor acid and alkali

  • resistance

<40℃

Measuring neutral and strongly worn coal slurry, mud and pulp

Polytetrafluoroethylene

  • Boiling resistant hydrochloric acid, sulfuric acid, nitric acid, aqua regia, concentrated

  • alkali and various organic solvents;


  • Good wear resistance and

  • poor adhesion.

80℃~180℃

Measuring concentrated acid, concentrated alkali, strong corrosive solution and sanitary medium

Silicone fluororubber

1, excellent elasticity, high breaking force, resistance to low concentrations of acid, alkali and salt in general.

70℃~250℃

Measuring water, sewage, steam and sanitary media


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