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industrial boiler water hardness range

Boiler Water Treatment Guidelines; Columbia Boiler Co

The alkalinity of boiler water should be sufficiently high enough to protect shell and plates against acidic corrosion but not high enough to produce carryover. A minimum value for alkalinity for adequate protection is 200 PPM. High boiler alkalinity which is in excess of 700 PPM should be avoided. Values higher than this can lead to embrittlement of the steel. Phosphates. Phosphates are used to react with

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Water Handbook -Boiler Deposits: Occurrence And Control | SUEZ

Most boiler systems have sodium zeolite softened or demineralized makeup water. Feedwater hardness usually ranges from 0.01 to 2.0 ppm but even water of this purity does not provide deposit-free operation. Therefore good internal boiler water treatment programs are necessary. DEPOSITS

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