A valve having a predetermined low pressure side, comprising: a main valve closure body , arranged on the low pressure side of the valve and moveable to open towards the low pressure side, a control body , fixedly connected to the main valve closure body , such that a position of the main valve closure body is fixed relative to a position of the control body, a control chamber (Cc), partially defined by the control body , whereby a volume of the control chamber (Cc) is variable in relation to the position of the control body , a control fluid connector for controlling a pressure in the control chamber (Cc), and a trigger valve , which is movable between an open state and a closed state and which, in its open state, connects the control chamber (Cc) to a pressure (Aa) which is sufficiently high to allow the main valve closure body to open, characterized in that the trigger valve is a pressure balanced valve comprising a trigger space (Ct1, Ct2, Ct3) that comprises a first trigger chamber (Ct1), a second trigger chamber (Ct2) and a third trigger chamber (Ct3), a first trigger closure body operable on a first trigger seat (St1) facing outwardly of the first trigger chamber (Ct1), and a second trigger closure body , rigidly connected to the first trigger body and operable on a second trigger seat (St2) facing inwardly of the second trigger chamber (Ct2), where the control fluid connector is connected to the third trigger chamber (Ct3) and where, when the trigger valve in its closed state, the first trigger chamber (Ct1) is open to the third trigger chamber (Ct3), such that vacuum applied through the control connection is applied to the control chamber (Cc) through the first and third trigger chambers (Ct1, Ct3), and the second trigger chamber (Ct2) is open to the third trigger chamber (Ct3), such that vacuum is applied to the control chamber (Cc) through the second and third trigger chambers (Ct2, Ct3). a main valve closure body , arranged on the low pressure side of the valve and moveable to open towards the low pressure side, a control body , fixedly connected to the main valve closure body , such that a position of the main valve closure body is fixed relative to a position of the control body, a control chamber (Cc), partially defined by the control body , whereby a volume of the control chamber (Cc) is variable in relation to the position of the control body , a control fluid connector for controlling a pressure in the control chamber (Cc), and a trigger valve , which is movable between an open state and a closed state and which, in its open state, connects the control chamber (Cc) to a pressure (Aa) which is sufficiently high to allow the main valve closure body to open, characterized in that the trigger valve is a pressure balanced valve comprising a trigger space (Ct1, Ct2, Ct3) that comprises a first trigger chamber (Ct1), a second trigger chamber (Ct2) and a third trigger chamber (Ct3), a first trigger closure body operable on a first trigger seat (St1) facing outwardly of the first trigger chamber (Ct1), and a second trigger closure body , rigidly connected to the first trigger body and operable on a second trigger seat (St2) facing inwardly of the second trigger chamber (Ct2), where the control fluid connector is connected to the third trigger chamber (Ct3) and where, when the trigger valve in its closed state, the first trigger chamber (Ct1) is open to the third trigger chamber (Ct3), such that vacuum applied through the control connection is applied to the control chamber (Cc) through the first and third trigger chambers (Ct1, Ct3), and the second trigger chamber (Ct2) is open to the third trigger chamber (Ct3), such that vacuum is applied to the control chamber (Cc) through the second and third trigger chambers (Ct2, Ct3). <EOS>