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Is there air pressure used in the barrel of the dry sprinklers to hold back the water?

April 26, 2017air Barrel dry hold pressure sprinklers Used water

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Is there air pressure used in the barrel of the dry sprinklers to hold back the water?

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No, the dry sprinklers do not have pressurized air in the barrel. The dry sprinklers have a brass seal which is held in place until the sprinkler has activated. Once the sprinkler has activated, the brass seal will clear the waterway, and water will flow into the barrel of the sprinkler.