A two-piece connection between a supply pipe from a source of water and a connection to a fire sprinkler with the connector having a first or rear section entirely above a ceiling and a second or front section connected to the first section with the connection entirely above a ceiling and the forward portion of second section connected to the fire sprinkler. The first connector section, located entirely above a ceiling, has a spherical male sidewall with a rounded leading edge and a rear portion of the second connector section has a spherical female interior surface.

A two-piece connection between a supply pipe from a source of water and a connection to a fire sprinkler with the connector having a first or rear section entirely above a ceiling and a second or front section connected to the first section with the connection entirely above a ceiling and the forward portion of second section connected to the fire sprinkler. The first connector section, located entirely above a ceiling, has a spherical male sidewall with a rounded leading edge and a rear portion of the second connector section has a spherical female interior surface.

A rotating conduit assembly for a fire suppression system includes a first conduit configured to fluidly coupled with a fluid source, a second conduit, and a rotatable coupling. The rotatable coupling is configured to rotatably couple the first conduit with the second conduit. The rotatable coupling includes a first annular member fixedly coupled with the first conduit, a second annular member fixedly coupled with the second conduit, an inner sleeve, an annular seal, and a rotational actuator. The inner sleeve extends between the first annular member and the second annular member. The annular seal is disposed between the inner sleeve and the second annular member and is configured to provide a fluidic seal between the inner sleeve and the second annular member. The rotational actuator is disposed radially outward from the inner sleeve and configured to rotate the first annular member relative to the second annular member.

A rotating conduit assembly for a fire suppression system includes a first conduit configured to fluidly coupled with a fluid source, a second conduit, and a rotatable coupling. The rotatable coupling is configured to rotatably couple the first conduit with the second conduit. The rotatable coupling includes a first annular member fixedly coupled with the first conduit, a second annular member fixedly coupled with the second conduit, an inner sleeve, an annular seal, and a rotational actuator. The inner sleeve extends between the first annular member and the second annular member. The annular seal is disposed between the inner sleeve and the second annular member and is configured to provide a fluidic seal between the inner sleeve and the second annular member. The rotational actuator is disposed radially outward from the inner sleeve and configured to rotate the first annular member relative to the second annular member.

A fire suppression system includes a controller; a plurality of nozzles to output a fire supressing agent to supress a fire; one or more sources of fire supressing agent; and a conduit for supplying the agent from the one or more sources to the plurality of nozzles; the conduit has a plurality of sections and a plurality of valves for controlling which of the plurality of sections the agent is supplied into from the one or more sources; and the controller is configured to, in response to a fire being detected: determine at least one nozzle of the plurality of nozzles that is required for supressing the fire; cause the agent to be supplied into the conduit from the one or more sources; and control the plurality of valves to supply the agent from the one or more sources to the at least one nozzle via the conduit.

A fire suppression system includes a controller; a plurality of nozzles to output a fire supressing agent to supress a fire; one or more sources of fire supressing agent; and a conduit for supplying the agent from the one or more sources to the plurality of nozzles; the conduit has a plurality of sections and a plurality of valves for controlling which of the plurality of sections the agent is supplied into from the one or more sources; and the controller is configured to, in response to a fire being detected: determine at least one nozzle of the plurality of nozzles that is required for supressing the fire; cause the agent to be supplied into the conduit from the one or more sources; and control the plurality of valves to supply the agent from the one or more sources to the at least one nozzle via the conduit.

A fluid flow rate sensor, which may also be the basis of a valve for a fire suppression system, uses a sensing arm to convey motion of an obturation body or a valve closing member to a sensor system which evaluates the motion and generates a calibrated measure of the flow rate and/or an alarm signal in response if warranted. The obturation body and the valve closing member are capable of both rotation and translational motion, both of which are sensed using the sensing arm. The sensor system is isolated from the fluid within the valve.

A system for mitigating fire within a battery storage container enclosing an energy storage system includes a sensor configured to detect a precursor condition indicative of a potential fire or explosion, a controller, and a set of extendable battery trays, each including a tray ejector and containing a set of battery cells. The controller detects a precursor condition in a battery tray via the sensor and ejects the battery tray to increase the distance between the battery tray and adjacent battery trays. The system can include a cooling channel in the battery tray configured to cool the set of battery cells, and/or a nozzle configured to direct fluid into the battery tray to suppress the precursor condition. In one variation, the system includes a door of the container configured to open, venting the interior of the container in response to detection of a precursor condition indicating a potential explosion.

A dual air vent assembly for wet pipe fire protection sprinkler systems allows air or gas to vent from system pipes as they fill, without spilling any water into the fire-protected environment, even if an air vent valve, operative to discharge air or gas but not fluid, fails. A shut-off valve is upstream of the first air vent valve, and a reservoir is downstream of it. Small amounts of water that escape the first air vent valve are collected in the downstream reservoir, and evaporate. The reservoir also collects fluid if the first air vent valve fails. In response to fluid in the reservoir at or above a predetermined level, the shut-off valve is actuated to arrest the flow of fluid into the first air vent valve. No water escapes the assembly, even if the first air vent valve fails. The shut-off valve may be electronically or mechanically actuated.

A fire prevention apparatus includes an inner pipe having multiple perforations along a length of the inner pipe. The fire prevention apparatus also includes an outer pipe surrounding the inner pipe, the outer pipe having a slit along a length of the outer pipe. The fire prevention apparatus also includes fire retardant disposed in a gap between the inner pipe and the outer pipe. The outer pipe is configured to compress when a force is applied to the outer pipe, so as to cause the fire retardant to pass through the perforations into the inner pipe.