· Introduction to the unique advantages of double seat and double seal anti mixing valve and other valves

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· Calculation of NPSH of unit

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· Hygienic requirements of EHEDG food processing on valves

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· Centrifugal sanitary pump (industry standard) QBT 1826-2010

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· German standard material standard en10269-1999

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· Standard for valve test and pressure test gbt-13927-2008

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· Production standard of ball valve gbt12237-2007

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· Flange and wafer connected elastic seal butterfly valve GB, t12238-2008

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· Industrial valves - national standard for pressure test gbt-13927-2008-

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