During hydrostatic testing of a dry pipe system, what must be done with the dry-pipe valve clapper?

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Multiple Choice

During hydrostatic testing of a dry pipe system, what must be done with the dry-pipe valve clapper?

Explanation:
During hydrostatic testing a dry pipe system needs water to fill the entire piping at the test pressure. The dry-pipe valve clapper is latched open so water can flow into the dry pipe network without the valve closing due to the air-chamber pressure. This ensures a complete fill, eliminates air pockets, and allows an accurate pressure test. After testing, restore the clapper to its normal control and reseat the valve as required.

During hydrostatic testing a dry pipe system needs water to fill the entire piping at the test pressure. The dry-pipe valve clapper is latched open so water can flow into the dry pipe network without the valve closing due to the air-chamber pressure. This ensures a complete fill, eliminates air pockets, and allows an accurate pressure test. After testing, restore the clapper to its normal control and reseat the valve as required.

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