Pre-Action Fire Sprinkler System
Pre-action fire sprinkler systems employ the basic concept of a dry pipe fire sprinkler system in that water is not normally contained within the pipes. But rather holding water from piping via pressurized air or nitrogen, pre-action sprinkler systems restrain water with an electrically operated valve, known as a pre-action valve.
American Fire Protection Group designs, installs and repairs pre-action pipe fire sprinkler systems for a variety of companies that operate high-hazard industrial and commercial applications, including archival vaults, fine art storage rooms, rare book libraries and computer centers.
The system’s discharge is a two-step process: First, the innovative detection system identifies smoke or heat, which activates a pre-action valve that allows water to flow into piping and effectively creates a wet pipe sprinkler system. Second, individual sprinkler heads release to let water flow onto the fire. This second step provides an added level of protection against inadvertent discharge, which makes pre-action systems ideal for water-sensitive environments.
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