Quick release valve for sprinkler head

A release member for a thermal and/or electrical release of a fire protection plant, in particular a sprinkler plant, wherein the release member is made of glass, is elongated along a longitudinal axis, has an inside and an outside, and is filled with a liquid at an inner space for bursting the release member, wherein the release member is made of a cylindrical center part with thin wall thickness, which cylindrical center part is closed at an upper end by way of a first glass plug and which cylindrical center part is furnished at a lower end with a second glass plug with a fill-in opening, which fill-in opening, after the filling in of the bursting fluid, is melted down in the lower part;

• and wherein the release member is furnished out of a pre-fabricated cylindrical glass tube with a cylindrical outer face and overlength shoulders which shoulders are dimensioned such that in each case the glass plugs are melted in an inward direction at the two ends of the glass tube from the shoulders, and wherein the cylindrical outer face is retained over the full length of the release member, and wherein the inner space of the release member exhibits at its upper end a substantial planar floor face and at its lower end a funnel face, wherein the shoulder at the second plug (45) is a transition shoulder (49) which forms a shoulder angle relative to the longitudinal axis (50) of from about 30 to 40 degrees.

A release member for thermal and/or electrical release of a fire protection plant, in particular a sprinkler plant, wherein the release member is made of glass, is elongated along a longitudinal axis, has an inside and an outside, and is filled with a liquid for bursting of the release member, and wherein the release member (41) comprises a cylindrical center part with thin wall thickness, which cylindrical center part is closed at an upper end by way of an outwardly rounded first glass plug (44), and which cylindrical center part is furnished at a lower end with a second glass plug (45) with a fill-in opening (46) which second glass plug narrows in an axial direction, which lower second plug with fill-in opening is melted after the filling-in of the bursting fluid (47) in the lower end (48), wherein the release member (41) is furnished out of a prefabricated cylindrical glass tube (42) with a cylindrical outer face and overlength shoulders (49), which glass tube (42) is dimensioned such that, in each case, at the two ends of the glass tube (42), the glass plugs (44, 45) are melted inwardly from the shoulders, and wherein the cylindrical outer face is thereby retained over the full length of the release member (41), and wherein the second plug (45) is funnel-shaped and the shoulder at the outside of the second plug is a transition shoulder (49), which forms a shoulder angle alpha relative to the longitudinal axis (50) of from about 30 to 40 degrees, and wherein the first plug (44) is furnished with an internal, substantially planar floor section (51).