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A stop valve at downstream side of a deluge valve

Question asked by on Aug 23, 2018
Latest reply on Aug 30, 2018 by cwebber


Does anyonw know why there should be a stop valve right after a deluge valve at downstream side? I understand that a stop valve is required prior to a deluge valve for system isolation, but do not know when to use the stop valve after a deluge valve. I have not seen this stop valve in sprinkler systems either. I have checked operation manual of a deluge system, but there is nothing mentioned about this valve. Please explain what this valve is for.