Abstract: A safety valve for a pressurized gas container is disclosed having a crossflow channel (1) which is connected to the pressurized gas container and having at least one outlet channel (2) and having a thermal triggering unit (3, 101, 102) which has a closure body (101) which can be displaced from a readiness position, in which, in interaction with a sealing element (5), it keeps the crossflow channel (1) tightly closed with respect to the at least one outlet channel (2), into a release position, in which the crossflow channel (1) is connected to the outlet channel (2), and which thermal triggering unit (3, 101, 102) has a rupture body (3) which is arranged between an abutment (4) and the closure body (101), in order to hold the latter in the readiness position, wherein the thermal triggering unit (3, 101, 102) comprises a spring element (102) which exerts a spring force on the rupture body (3), which spring force is oriented in the direction of the abutment (4).

Abstract: A safety valve for a compressed gas container having an overflow duct (2) connected to the compressed gas container and having an outlet duct (3) and having a thermal triggering unit which comprises a closure body (15; 20) that is displaceable out of a standby position in which it holds the overflow duct tightly sealed with respect to the outlet duct in cooperation with a sealing element (9), into a release position in which the overflow duct (2) is connected to the outlet duct and also comprises a burst body (8) which is arranged between an abutment and a closure body (15; 20) to hold the latter in the standby position, such that the thermal triggering unit comprises a spring element (10; 11; 21) which exerts a spring force directed in the direction of the abutment on the burst body (8), characterized in that the closure body (15; 20) is an element having an essentially wedge-shaped cross section and having rotational symmetry about a central axis, said element engaging in the inside diameter of the O ring a

Abstract: A spray nozzle for fire extinguishing devices with a nozzle body and a valve for a valve body provided at the nozzle opening, wherein the valve body is held in a closed position by a support member which is secured by a thermal release element. The support member is connected to the nozzle body through a hook-type connection and has a unilaterally protruding lever arm. A bearing lever is mounted on the nozzle body so as to be located opposite the protruding lever arm in such a way that the thermal release element is located between the protruding lever arm and the bearing lever laterally next to the nozzle body.

Abstract: A pull rope shortening device for fire extinguishing units, particularly for kitchen exhaust hoods, includes a shortening element which deflects the pull rope which is under tension in order to shorten the length of the pull rope, wherein the shortening element is held in the position in which it shortens the length of the pull rope by a thermally released separating device. The shortening element is composed of a spring steel wire which is wound or bent in such a way that at each end thereof is formed an end eyelet for receiving the pull rope and at least one guide eyelet acting as a spring and guiding the pull rope is provided between the two ends.

Abstract: A thermally released separation or disconnecting device, particularly for fire protection systems, includes two oppositely arranged joining members which are connected to each other and are subjected to a tensile force. A destructible thermal release element is held between the joining members. The joining members are constructed as stirrups with two legs each, wherein the stirrups equally absorb the tensile force. The destructible thermal release element is held between oppositely arranged legs of the stirrups and extends essentially perpendicularly of the direction of the tensile force in the locked position of the separation device. Each leg of one stirrup holding the thermal release element is connected in the locked position of the separation device to the other leg of the other stirrup in a positively engaging manner against the direction of the tensile force.

Abstract: An improved thermally active glass bulb for fire extinguisher sprinkler heads. The elongate bulb has a one piece integrally formed glass envelope which is of circular shape and has end portion and a tubular column therebetween defining an elongate sealed chamber containing a heat responsive expansible liquid to rupture the glass envelope when heat is sensed. The bulb has an elongate tapered end tip formed in loading and sealing of a quantity of the expansible breaking liquid into the chamber. The end portions are adapted for seating in the sprinkler head and have outer peripheries smoothly tapering divergently progressively endways from portions of the tubular column and toward the seating areas. The end portions having diameters in excess of a diameter of the tubular column.

Abstract: A sprinkler having a valve disc closed by pressure sealing. The valve disc corresponds to a spring elastic annular disc which is subject to uniform loading of acting hydraulic forces and to annular loading of sealing forces of the valve seating on one side, and is supported substantially and centrally at the support surface by a support on the other side. The differential spring rate for annular loading under deflection is smaller or equal to the spring rate of the support measured from the support face to the valve seating.

Abstract: A sprinkler comprising a frame formed at one portion with a passage terminating at a seat, a closure disposed across the passage adjacent the seat, a seal having a pressure-impacted side and another side exposed to ambient pressure and being disposed between the closure and the seat, and a heat sensitive rupturable part disposed between another portion of the frame and the closure so as to hold the closure so disposed when the rupturable part is at ambient temperature and adapted to release the closure and the seal when the part is at elevated temperature, wherein the seal comprises a first sealing member disposed against the seat and a second sealing member disposed between a portion of the closure and the first sealing member, the second sealing member pressing the first sealing member against the seat and being covered by the first sealing member on the pressure-impacted side.