Pre-Action Fire Sprinkler System in Houston, Austin, Dallas, and San Antonio

The pre-action sprinkler system is hybrids of wet, dry, and deluge systems depending on the exact system goal. There are two main subtypes of pre-action sprinkler systems: single interlock fire sprinkler system, and double interlock fire sprinkler system.

The operation of single interlock sprinkler systems are similar to dry fire sprinkler systems except that these systems require that a "preceding" fire detection event, typically the activation of a heat or smoke detector, takes place prior to the "action" of water introduced into the system's piping by opening the pre-action valve, which is a mechanically latched valve (i.e. similar to a deluge valve). In this way, the system is essentially converted from a dry system into a wet system. The intent is to reduce the undesirable time delay of water delivery to sprinklers that is inherent in dry systems. Prior to fire detection, if the sprinkler operates, or the piping system develops a leak, loss of air pressure in the piping will activate a trouble alarm. In this case, the pre-action valve will not open due to loss of supervisory pressure, and water will not enter the piping.

The operation of double interlock systems is similar to deluge systems except that automatic sprinklers are used. These systems require that both a "preceding" fire detection event, typically the activation of a heat or smoke detector, and an automatic sprinkler operation take place prior to the "action" of water introduced into the system's piping. Activation of either the fire detectors alone, or sprinklers alone, without the concurrent operation of the other, will not allow water to enter the piping. Because water does not enter the piping until a sprinkler operates, double interlock systems are considered as dry systems in terms of water delivery times, and similarly require a larger design area. Fire Sprinkler System Texas has been installing these systems in Houston, TX. Fire Sprinkler System Texas is one of the most experienced Fire Sprinkler companies in Houston.