Comments on gbww[10] - burst valvetag:ipernity.com,2024-03-19:comments/doc-20989603http://cdn.ipernity.com/p/101/3F/C4/312383.buddy.jpgThese valves and fittings are from a redundant fire sprinkler system. It had been 13.5 degrees below the freezing point of water for several days. The force exerted by the expansion of water as it freezes can be seen from the split and cracked valve casings.2024-03-19T03:13:38+00:00ipernity.com