It is less expensive then black steel pipe. And heat ratings allow it to be aprroved for residential application.
Wet pipe sprinkler
Black steel
Automatic Sprinkler of Connecticut LLC specializes in the simplest and most cost-effective types of automatic fire sprinkler systems, wet pipe sprinklers. Wet pipe sprinklers are the most common type of sprinkler system and are very reliable. They use water from a pressurized supply line to activate the sprinklers in case of smoke or heat detection, quickly suppressing any fires while minimizing damage.
Below given list based on a determination specific needs.Wet Fire Sprinkler SystemsDry Pipe SystemsPreaction SystemsDeluge Sprinkler SystemAnti-Freeze Sprinkler System
it depends on the size of the pipe,but usually two or more.
25-150 gallons per minute is standard depending on the type of sprinkler head. Residential sprinklers will be closer to 25. That flow is for a SINGLE sprinkler head. Typically the fire will be extinguished by just activating one sprinkler head.
you can use what ever kind of paint you want to
Either one CAN be used. Galvanized would be preferred in an environment high in chlorine or corrosive materials. Normally though, black pipe, or carbon steel, is used for fire protection because it is much cheaper.
Some fire sprinkler systems have a valve for testing the water-flow alarm by allowing water to flow to the alarm, or through the alarm-sensing pipe, without activating any sprinklers in the rest of the system.
NO, NFPA 25chapter 5, sprinkler pipe shall be free of external load
Fire sprinklers have two major components that operate in response to a fire: the fire sprinkler heads which are connected via a series of pipes to a fire pumps. Water pressure is kept in the head by a series of valves in the pump. and is kept in the heads by little vials of colored liquid. During a fire, the liquid inside the sprinkler heads heats up and starts to expand, eventually causing the vial to burst. Water that was kept in the pipes pours out of the sprinkler heads. The water pouring out of the sprinkler heads causes the pressure in the fire pump to drop. In response, the pump kicks on and pumps more water from the municipal water supply to keep the sprinkler flowing. NOTE: this is how "wet pipe" fire sprinklers, the most common types of fire sprinklers, work. Other sprinklers (dry pipe, deluge and pre-action) are slightly different.
The term sprinklers typically refers to devices that discharge water for irrigation or fire control applications. Irrigation sprinkler systems can be either manual or automatic. Three common types of irrigation sprinkler heads are sprays, rotors (impact or gear drive), and multi-stream rotators. Fire sprinkler systems types include wet pipe, dry pipe, deluge, pre-action, foam water, and water spray. Common types of fire sprinkler heads are bulb, upright, pendant and side wall.