Pressure Relief Valves consist of a cylindrical casing with a bottom flange to be connected with a spigot welded on the silo roof, a disc shape inner steel lid for negative pressure operation held in position by a central spring rod, an outside steel ring for excess pressure kept in position by three spring rods, gaskets, and a weather protection cover.
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SIZE 273
(mm)
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A
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400
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B
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356
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C
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125
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D
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120
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E
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325
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φF
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273
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NW(kg)
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9.5
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