An automatic dry fire protection sprinkler assembly and method of operation. The sprinkler assembly includes an elongate tubular outer housing having a fluid discharge end with an outlet opening, an internal channel and a contact surface proximate the outlet opening. A fluid deflection member is coupled to the housing at a preferably fixed distance from the outlet opening. An internal fluid control assembly includes an ejectable member that is ejected out the outlet opening and displaced out of the fluid flow ath between the housing and the fluid deflection member. Upon sprinkler actuation, the fluid control assembly engages the internal channel to axially guide the fluid control assembly and prevent rotation of the fluid control assembly about the sprinkler axis. A surface ontact between the ejectable member and the internal shelf causes the ejectable member to pivot clear of the sprinkler housing and the fluid deflection member.

An automatic dry fire protection sprinkler assembly and method of operation. The sprinkler assembly includes an elongate tubular outer housing having a fluid discharge end with an outlet opening, an internal channel and a contact surface proximate the outlet opening. A fluid deflection member is coupled to the housing at a preferably fixed distance from the outlet opening. An internal fluid control assembly includes an ejectable member that is ejected out the outlet opening and displaced out of the fluid flow ath between the housing and the fluid deflection member. Upon sprinkler actuation, the fluid control assembly engages the internal channel to axially guide the fluid control assembly and prevent rotation of the fluid control assembly about the sprinkler axis. A surface ontact between the ejectable member and the internal shelf causes the ejectable member to pivot clear of the sprinkler housing and the fluid deflection member.

A triggering element for a fire protection system may be provided, the triggering element comprising at least one rupture body, which includes an optical waveguide, into which optical waveguide at least one predetermined breaking point is introduced. A sprinkler head or a smoke evacuation damper having at least one triggering element of this type may be provided. A method may be provided for detecting the triggering of a sprinkler head or of a smoke evacuation damper of a fire protection system.

A triggering element for a fire protection system may be provided, the triggering element comprising at least one rupture body, which includes an optical waveguide, into which optical waveguide at least one predetermined breaking point is introduced. A sprinkler head or a smoke evacuation damper having at least one triggering element of this type may be provided. A method may be provided for detecting the triggering of a sprinkler head or of a smoke evacuation damper of a fire protection system.

An automatic fire protection sprinkler assembly for fire protection systems that includes a tubular outer housing having an inlet, an outlet opening and an internal shelf proximate the outlet opening. A fluid deflection member is spaced from the outlet opening along a fluid flow path of the assembly. A fluid control assembly is disposed within the outer housing for axial translation from an unactuated state to an actuated state of the sprinkler assembly. The fluid control assembly includes a seal subassembly, a fluid flow tube; and an ejectable support subassembly. The support subassembly includes a projection member. Upon actuation of a thermally responsive trigger, the oa support subassembly is ejected out the outlet opening such that the projection member comes into contact with the internal shelf of the housing to pivot the support subassembly out of the fluid flow path.

An automatic fire protection sprinkler assembly for fire protection systems that includes a tubular outer housing having an inlet, an outlet opening and an internal shelf proximate the outlet opening. A fluid deflection member is spaced from the outlet opening along a fluid flow path of the assembly. A fluid control assembly is disposed within the outer housing for axial translation from an unactuated state to an actuated state of the sprinkler assembly. The fluid control assembly includes a seal subassembly, a fluid flow tube; and an ejectable support subassembly. The support subassembly includes a projection member. Upon actuation of a thermally responsive trigger, the oa support subassembly is ejected out the outlet opening such that the projection member comes into contact with the internal shelf of the housing to pivot the support subassembly out of the fluid flow path.

A sprinkler includes a body defining a bore extending from an inlet to an outlet. At least one of an inner diameter and a wall thickness of the bore can be sized such that a K-factor of the sprinkler is within a threshold of 30.8, the K-factor defined in units of gallons per minute [gpm]/(pounds per square inch [psi]).sup.1/2.

Systems and methods described herein are directed to a sprinkler to provide fire protection. The sprinkler system can include a deflector portion, a head portion, a thermal trigger portion, a trigger seat, or a tubular outer structure. The tubular outer structure can define an internal water flow channel. The water flow channel can extend along a longitudinal axis between an inlet and an outlet. The trigger seat can include a tubular exterior. The tubular exterior can be coupled with the tubular outer structure. The trigger seat can include a component. The component can occlude a flow of fluid through the dry pendent sprinkler assembly. The component can maintain the thermal trigger portion in position. At least one portion of the tubular exterior of the trigger seat can protrude into the water flow channel at an angle towards the longitudinal axis.

A dry fire protection sprinkler has an inlet seal assembly to seal an inlet orifice. A spring seal compresses in response to a load. An inlet release unit releases the inlet seal assembly. A flexible tube has an inlet end connected to the inlet release unit. A flexible linkage extends through the flexible tube, and has an inlet end connected to the inlet release. An outlet biasing portion is connected to an outlet end of the tube and an outlet end of the linkage, which displaces upon activation of the sprinkler. A sprinkler body is connected to the outlet biasing portion, with an outlet seal assembly to seal its outlet orifice. When ambient reaches a predetermined temperature, the outlet seal assembly releases from the outlet orifice, and the outlet biasing portion displaces the linkage, causing the inlet of the linkage to operate the inlet release unit, releasing the inlet seal.

A dry fire protection sprinkler has an inlet seal assembly to seal an inlet orifice. A spring seal compresses in response to a load. An inlet release unit releases the inlet seal assembly. A flexible tube has an inlet end connected to the inlet release unit. A flexible linkage extends through the flexible tube, and has an inlet end connected to the inlet release. An outlet biasing portion is connected to an outlet end of the tube and an outlet end of the linkage, which displaces upon activation of the sprinkler. A sprinkler body is connected to the outlet biasing portion, with an outlet seal assembly to seal its outlet orifice. When ambient reaches a predetermined temperature, the outlet seal assembly releases from the outlet orifice, and the outlet biasing portion displaces the linkage, causing the inlet of the linkage to operate the inlet release unit, releasing the inlet seal.