Nominal coherent way(mm):DN20-450
Pressure grade:PN10,PN16,PN25
Diaphrage type:dn20-450 Piston:DN350-750
Function and use:When the pressure exceeds and lets out and presses the specified pressure of the valve in the feed pipe,discharge the valve to open,prevent the pipeline and apparatus from being damaged because of exceeding pressing can be used in the fire control of the skyscraper and test the letting out and pressing of circulatory system,cause the system to be dangerous in order to prevent water pressure from being too high.
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