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The present investigation deals with the design and shape optimization of the steel insert used in the hand brake valve to withstand the impact load during brake off condition. This hand brake valve is used in the vehicles for parking brake application. It consists of a steel insert with a helical coil spring for locking and unlocking of a lever during brake on and off condition. Also a torsion spring with a cam mechanism is used for opening and closing of a hand brake valve. When the lever is locked the flexible elastic object (torsion spring) stores the mechanical energy when it is twisted. When it is unlocked (braking off) it exerts a force (actually torque) in the opposite direction, proportional to the angle it is twisted. During the braking off condition the steel insert gains the angular velocity from the stored mechanical energy of the torsion spring.