Danfoss EV210B How To Use Manual
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2© Danfoss A/S (IA-MC/mhe) 05-2007 / 520B2809With the larger valves, very short closing times cancause water hammer.The EV220B servo-operated valves have dampedclosing and fulfil EN 60730-2-8 specifications.The table give the opening/closing times of thevarious types, but it must be emphasised thattube dimensions / lengths and differences inoperating conditions - especially pressure- can cause deviations from the values given.Opening and closing timesClosing times and waterhammerType Opening [ms] Closing [ms]EV210B 1.5EV210B 3EV210B 6102020202020EV250B 12EV250B 18EV250B 22100150150100100100EV220B 10EV220B 125060300300EV220B 15EV220B 20EV220B 25EV220B 32EV220B 40EV220B 504040300100015005000350100010002500400010000EV310B 10 - 20 10 - 20High performance (blue)rangeCompact (black) range Type Opening [ms] Closing [ms]EV210A 7 - 10 7 - 10EV220A 6EV220A 10EV220A 12EV220A 14EV220A 18EV220A 22EV220A 32EV220A 40EV220A 504050601002002002500400050002503003004005005004000600010000EV310A 7 - 10 7 - 10 |
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