The release solenoid is used for the electrical actuation of a type QRV quick release valve. The solenoid is only suitable for usage inside buildings. By applying voltage to the solenoid, the force stored in a spring assembly is suddenly released. In this case, a plunger activates the pilot valve integrated into the quick release valve and vents the upper pressure chamber. This drop in pressure causes the extinguishing agent pressure to push the closing piston into an open position. This in turn causes the quick release valve to open.