Abstract: A valve that closes automatically when infers a leak in a supply network of liquid or gas fluids where it is installed. The closure of the valve is performed by a stem connected to a mechanism of rod-crank-slider that displaces a shutter, the stem is activated at the same time by an actuator that allows to release the potential energy of a flat coil torsion spring.

Abstract: The invention relates to a device for saving, protecting and portioning toilet paper, said device being designed to portion the quantity of toilet paper supplied to the user by adjusting the predetermined quantity or length of paper dispensed, and the programmed time between one dispensation and another. In addition, the features of the device prevent all or a portion of the paper from being stolen, and the front screen of the device permits the user to know when they may access a new dispensation of paper by operating an actuating means. In this way, the user does not have access to all the paper at once, so they cannot steal or waste same, reducing the cost of operating and maintaining toilet areas, and improving the appearance of the toilet service.

Abstract: A shut off system for a hydrocarbon recovery mandrel includes an inline valve assembly that contains a nipple that includes a chemical flow line. The chemical flow line is operative to transfer fluids from outside the wellbore to a mandrel channel; where the mandrel channel is disposed in the mandrel. A valve assembly includes a cylinder and a piston shaft; where the cylinder contacts the chemical flow line; where the piston shaft reciprocates in the cylinder in response to opposing applied pressures. The piston shaft contacts a sealing object that is operative to facilitate or to prevent fluid flow from the chemical flow line to the mandrel channel. The cylinder includes a port that provides fluid communication from the cylinder to the mandrel channel and an actuating assembly; where the actuating assembly is operative to displace the piston shaft in the cylinder to prevent fluid communication between the chemical flow line and the mandrel channel.

Abstract: Disclosed herein is a shut off system for a hydrocarbon recovery mandrel comprising an inline valve assembly comprising a nipple comprising a chemical flow line; the chemical flow line being operative to transfer fluids from outside the wellbore to a mandrel channel; where the mandrel channel is disposed in the mandrel; a valve assembly comprising a cylinder and a piston shaft; where the cylinder contacts the chemical flow line; where the piston shaft reciprocates in the cylinder in response to opposing applied pressures; where the piston shaft contacts a sealing object that is operative to facilitate or to prevent fluid flow from the chemical flow line to the mandrel channel; where the cylinder comprises a port that provides fluid communication from the cylinder to the mandrel channel; and an actuating assembly; where the actuating assembly is operative to displace the piston shaft in the cylinder to prevent fluid communication between the chemical flow line and the mandrel channel.