A sprinkler head (130; 130') comprising - an inlet device (132; 132') configured to operatively lead a fire-extinguishing medium and air from a distribution system into the sprinkler head (130; 130'), - an outlet device (132b; 132b') configured to operatively release fire-extinguishing medium and air from the sprinkler head (130; 130'), - a flow passage configured to lead fire-extinguishing medium and air from the inlet device (132; 132') to the outlet device (132b; 132b'), - a valve device (134; 134a', 134b') configured to operatively be held in a first non-activated state by a triggering device (136; 136') in the sprinkler head (130; 130'), so that the flow passage is closed, and configured to in an activated state operatively open the flow passage when the triggering device (136; 136') is activated in a heated state, so that air and fire-extinguishing medium may flow from the inlet device (132; 132') to the outlet device (132b; 132b'), the valve device (134; 134a', 134b') is configured to in a second non-activated test state operatively open the flow passage so that air and fire-extinguishing medium may flow from the inlet device (132; 132') through the flow passage and out through the outlet device (132b; 132b'), wherein the triggering device (136; 136') in the test state is maintained in an unchanged state and an unchanged position, wherein the valve device (134; 134a', 134b') comprises at least one flow control device (134b; 134b') arranged to operatively be displaced from a first position closing the flow passage in the first non-activated state to a second position opening the flow passage in the activated state when the triggering device (136; 136') has been activated, and wherein the valve device (134; 134a', 134b') further comprises a biasing device (134c; 134c'), which together with the triggering device (136; 136') hold the valve device biased in the first non-activated state and in that this biasing device is configured to operatively be able to displace the flow control device (134b; 134b') from said first position closing the flow passage in the first non-activated state to said second position opening the flow passage in the activated state when the triggering device (136; 136') has been activated, wherein the flow control device (134b; 134b') is arranged to be operatively displaced from the first position to the second position along a first axis (134a4, 134a4') of the sprinkler head, characterised in that the flow control device (134b; 134b') is arranged to be operatively displaced along the first axis (134a4, 134a4') from the first position to a third position, which opens the flow passage in the second non-activated test state. - an inlet device (132; 132') configured to operatively lead a fire-extinguishing medium and air from a distribution system into the sprinkler head (130; 130'), - an outlet device (132b; 132b') configured to operatively release fire-extinguishing medium and air from the sprinkler head (130; 130'), - a flow passage configured to lead fire-extinguishing medium and air from the inlet device (132; 132') to the outlet device (132b; 132b'), - a valve device (134; 134a', 134b') configured to operatively be held in a first non-activated state by a triggering device (136; 136') in the sprinkler head (130; 130'), so that the flow passage is closed, and configured to in an activated state operatively open the flow passage when the triggering device (136; 136') is activated in a heated state, so that air and fire-extinguishing medium may flow from the inlet device (132; 132') to the outlet device (132b; 132b'), the valve device (134; 134a', 134b') is configured to in a second non-activated test state operatively open the flow passage so that air and fire-extinguishing medium may flow from the inlet device (132; 132') through the flow passage and out through the outlet device (132b; 132b'), wherein the triggering device (136; 136') in the test state is maintained in an unchanged state and an unchanged position, wherein the valve device (134; 134a', 134b') comprises at least one flow control device (134b; 134b') arranged to operatively be displaced from a first position closing the flow passage in the first non-activated state to a second position opening the flow passage in the activated state when the triggering device (136; 136') has been activated, and wherein the valve device (134; 134a', 134b') further comprises a biasing device (134c; 134c'), which together with the triggering device (136; 136') hold the valve device biased in the first non-activated state and in that this biasing device is configured to operatively be able to displace the flow control device (134b; 134b') from said first position closing the flow passage in the first non-activated state to said second position opening the flow passage in the activated state when the triggering device (136; 136') has been activated, wherein the flow control device (134b; 134b') is arranged to be operatively displaced from the first position to the second position along a first axis (134a4, 134a4') of the sprinkler head, characterised in that the flow control device (134b; 134b') is arranged to be operatively displaced along the first axis (134a4, 134a4') from the first position to a third position, which opens the flow passage in the second non-activated test state.