Ball

A valve ball is a crucial component in diaphragm pumps, particularly in Air-Operated Double Diaphragm (AODD) pumps and some mechanical diaphragm pumps. It functions as a check valve, allowing fluid to flow in one direction while preventing backflow, ensuring efficient pumping action.

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Ball TypeMain MaterialTemperature ResistanceChemical ResistanceAbrasion ResistanceOil ResistanceApplicable Environment
PTFE BallPTFE-50 degrees to 260 degreesExcellent (resistance to acids, alkali, solvents and corrosive liquids)ExcellentExcellentStrong acid and alkali, high temperature, high corrosive media, food and pharmaceutical industry
Santoprene BallSantoprene-60 degrees to 150 degreesGood (chemical resistance, abrasion resistance)GoodExcellentOily liquids, chemicals, petroleum, sewage treatment, etc.
NBR BallNitrile Rubber-30 degrees to 120 degreesGood (oil, solvent resistant)BetterExcellentOils, lubricants, chemicals, etc.
CR BallNeoprene-35 degrees to 100 degreesGood (resistance to acids, oils, ageing)GoodBetterModerately corrosive liquids, oils, sewage treatment, etc.
EPDM BallEPDM-40 degrees to 120 degreesExcellent (resistance to acids, alkali, water, oxidation)BetterGeneralChemicals, wastewater treatment, hot water, etc.
Iron Core BallInner Core: carbon steel, etc.-50 degrees to 260 degreesExcellent (resistance to acids, alkali, solvents and corrosive liquids)ExcellentExcellentStrong acids and alkali, solvents, corrosive fluids
Outer Layer: PTFE
Inner Core: carbon steel, etc.-30 degrees to 120 degreesGood (oil, water, weak acids and bases, granular slurries)GoodBetterOil, water, weak acids and alkali, granular slurry
Outer Layer: CR, NBR, etc.

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