Leakage protection device for automatically closing a hose line or pipe for transporting liquid or gaseous media, in particular water, comprising - a central supply line , - a main channel arranged between the central supply line and a subsequent house installation, and a bypass , - a closure member for interrupting the total volume flow, - a shut-off valve in the main channel which is closed when the pressure difference across the shut-off valve is less than an opening threshold value Δpö, and is open when the pressure difference across the shut-off valve is greater than the opening threshold value Δpö, a volume flow being guided completely through the bypass when the shut-off valve is closed, and - an electronic control device and means for closing and opening the closure member , a membrane being arranged in the bypass , characterized in that the membrane has a through-opening , a force being generated on the membrane when there is a volume flow through the through-opening , in that the leakage protection device comprises means for directly or indirectly determining the force on the membrane , and in that the electronic control device is designed such that it receives measurement signals from the means for determining the force on the membrane and, when a predeterminable limit value GW is exceeded or not met, transmits control signals for closing the closure member to the means for closing the closure member and/or generates a leakage alarm signal. - a central supply line , - a main channel arranged between the central supply line and a subsequent house installation, and a bypass , - a closure member for interrupting the total volume flow, - a shut-off valve in the main channel which is closed when the pressure difference across the shut-off valve is less than an opening threshold value Δpö, and is open when the pressure difference across the shut-off valve is greater than the opening threshold value Δpö, a volume flow being guided completely through the bypass when the shut-off valve is closed, and - an electronic control device and means for closing and opening the closure member , a membrane being arranged in the bypass , characterized in that the membrane has a through-opening , a force being generated on the membrane when there is a volume flow through the through-opening , in that the leakage protection device comprises means for directly or indirectly determining the force on the membrane , and in that the electronic control device is designed such that it receives measurement signals from the means for determining the force on the membrane and, when a predeterminable limit value GW is exceeded or not met, transmits control signals for closing the closure member to the means for closing the closure member and/or generates a leakage alarm signal. characterized in that the membrane has a through-opening , a force being generated on the membrane when there is a volume flow through the through-opening , in that the leakage protection device comprises means for directly or indirectly determining the force on the membrane , and in that the electronic control device is designed such that it receives measurement signals from the means for determining the force on the membrane and, when a predeterminable limit value GW is exceeded or not met, transmits control signals for closing the closure member to the means for closing the closure member and/or generates a leakage alarm signal. <EOS>