Abstract: A protective device prevents tampering with a pipe system. The system transmits fluid from an upstream end to a downstream end of the system. The protective device includes a pipe insert disposed within the system between the upstream and downstream ends, and a valve within the pipe insert. The valve is moveable between open and closed positions, wherein the open position opens the pipe insert, enabling transmission of the fluid through the pipe insert, and the closed position occludes the pipe insert, disabling transmission of the fluid through the pipe insert to the downstream end of the system. The device includes a sensor for disposition within the fluid to detect a target compound in the pipe insert. The valve moves from the open position to the closed position when the sensor detects the target compound.

Abstract: A protective device for preventing tampering with a fire control system includes a pipe insert disposed between upstream and downstream ends of the fire control system, a valve within the pipe insert which is moveable between open and closed positions. The open position opens the pipe insert, and the closed position occludes the pipe insert. The device includes a dampener which is disposed in-line with the pipe insert and is configured to prevent transmission of a resonant frequency through the fire control system. A sensor is disposed within the flow of the fluid to detect one of a target compound in the pipe insert and a pressure level. The valve moves from the open position to the closed position when the sensor detects the one of the target compound and the pressure level.

Abstract: A protective device prevents tampering with a pipe system. The system transmits fluid from an upstream end to a downstream end of the system. The protective device includes a pipe insert disposed within the system between the upstream and downstream ends, and a valve within the pipe insert. The valve is moveable between open and closed positions, wherein the open position opens the pipe insert, enabling transmission of the fluid through the pipe insert, and the closed position occludes the pipe insert, disabling transmission of the fluid through the pipe insert to the downstream end of the system. The device includes a sensor for disposition within the fluid to detect a target compound in the pipe insert or a threshold pressure level. The valve moves from the open position to the closed position when the sensor detects the target compound or threshold pressure level.