FAQs | Weil-McLain Boilers & Products

Sodium carbonate (up to one pound for every 30 gallons of water content) or sodium hydroxide (lye) (up to one pound for every 50 gallons) may be used. Check pH level after cleaning. It should be between 7 and 8.5. A small amount of cleaner maybe added to adjust the pH up to the proper range. DO NOT use petroleum-based products in the boiler.

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pH - Wikipedia

In chemistry, pH (/ p iː ˈ eɪ tʃ /, denoting 'potential of hydrogen' or 'power of hydrogen') is a scale used to specify the acidity or basicity of an aqueous solution.Acidic solutions (solutions with higher concentrations of H + ions) are measured to have lower pH values than basic or alkaline solutions.. The pH scale is logarithmic and inversely indicates the concentration of hydrogen

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Water for the Boiler | Spirax Sarco

If the pH value of the water is too low, the acidic solution will attack metal surfaces. If the pH value is too high, and the water is alkaline, other problems such as foaming may occur. Caustic embrittlement or caustic cracking must also be prevented in order to avoid metal failure.

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Boiler Water Conductivity Measurement Fundamentals

Feb 24, 2016 · It is necessary to measure the conductivity of the boiler water inside the boiler or in the blowdown line. Obviously, the conditions are very different from those of the sample obtained via the sample cooler which will be cooled and subsequently neutralized (pH = 7). The main aspects are the great temperature difference and high pH.

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Unit 1 water_technology - SlideShare

Nov 11, 2012 · Selection of Phosphate compoundCalcium can not be precipitated below a pH = 9.5, hence the selection ofphosphate has to be based on the pH of the boiler feed water. NaH 2 PO 4 (acidic in nature), Na 2 HPO 4 (weakly alkaline in nature), Na 3 PO 4 (Alkaline in nature)2.

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Water Handbook - Preboiler & Industrial Boiler Corrosion

In high-purity systems, raw water in-leakage (e.g., condenser leakage) lowers boiler water pH when magnesium hydroxide precipitates, resulting in corrosion, formation of atomic hydrogen, and initiation of hydrogen attack. Coordinated phosphate/pH control can be used to minimize the decrease in boiler water pH that results from condenser leakage.

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Controlling TDS in the Boiler Water | Spirax Sarco

An increase in temperature results in an increase in electrical conductivity. For boiler water, the conductivity increases at the rate of approximately 2% (of the value at 25°C) for every 1°C increase in temperature. This can be written as: Example 3.12.3. A boiler water sample has an unneutralised conductivity of 5 000 μS/cm at 25°C.

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Marine Engineering: Boiler Water Testing

Dec 15, 2010 · PH Value (Reciprocal or Hydrogen Ion) Test 7.5 14.0 for Boiler Water 6.5 10.0 for Condensate Water Purpose: 1. To give warning on acidity or alkalinity of boiler water sample. 2. Result help to establish the dosage of boiler compound to fight against corrosion. Procedures

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Boiler Layup Procedures Water Technology Report

Jul 24, 2017 · This procedure involves filling the boiler, feedwater heaters, and deaerators with demineralized water, treating the water with a chemical oxygen scavenger, and adjusting the pH between 10 and 11. For boilers without superheaters or for boilers with drainable superheaters, sodium sulfite and caustic soda are generally used for this purpose.

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Condensing boiler - Wikipedia

[citation needed] While the effectiveness of the condensing process varies depending on the temperature of the water returning to the boiler, it is always at least as efficient as a non-condensing boiler. The condensate produced is slightly acidic (3-5 pH), so suitable materials must be used in areas where liquid is

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