A vacuum relief valve for a railroad tank car and methods for using the same to test the vacuum relief valve for leaks without requiring removal of the valve from the railroad tank car are described herein. According to one aspect of the invention, a vacuum relief valve described herein may be inspected for leaks without removing the vacuum relief valve from the railroad tank car by using two or more access openings located on the body of the vacuum relief valve. According to another aspect of the invention, a vacuum relief valve described herein may be inspected for leaks without removing the vacuum relief valve from the railroad tank car by using an opening to an interior cavity of the valve body that is revealed by rotating a cover from a closed position to an open position.

An assembly is provided for performing start-up testing on a fluid flow control device. The assembly includes a retainer adapted to be disposed in a valve body of the fluid flow control device, and a sealing assembly coupled to a portion of the retainer and adapted to be disposed adjacent a valve seat of the fluid flow control device. The sealing assembly includes one or more sealing elements configured to provide a seal during start-up testing at a service temperature of between approximately 325 degrees Fahrenheit and approximately 1250 degrees Fahrenheit.

An electrovalve for monitor and controlling the fluid supply of an installation of a building, said installation comprising piping in which a fluid circulates, said electrovalve comprising an electrovalve body (2), an inlet (23) to be connected to said piping (10), an outlet (24) also to be connected to said piping (10), a passage (25) provided between said inlet (24) [sic] and said outlet (25) [sic], equipped with sealable closing means (31) movable between an open position, by which the fluid is allowed to circulate in said passage (25) between said inlet (23) and said outlet (24), and a closed position by which the passage (25) is blocked and prohibits any circulation of fluid between said inlet (23) and said outlet (24). The electrovalve comprises a device (4) for controlling the closing means (31) associated with a flowmeter (5). According to the invention, the flowmeter (5) comprises an internal chamber (50) provided in the body of the electrovalve and the electrovalve comprises a secondary fluid passage circuit between the inlet of the chamber and the outlet of the chamber, the inlet and the outlet being connected to the primary fluid passage circuit.

A test assembly for a valve is provided that comprises a test frame with a bubble catch plate that directs bubbles generated during a valve test towards a gas capture tube where gas flow is directly measured.

A valve seat inspection method and valve seat inspection device using an image recognition camera. An inspection device main body has a checkup circuit for checking a leak with a reference leak amount, an inspection circuit in a state in which a test valve is set, and an image recognition camera for taking an image of bubbles appearing from a tip of an inspection tube being inserted into water in a container. The inspection device main body goes through a checkup process of switching a circuit switching part and making a pass/fail determination by the image recognition camera as to whether bubbles appear from the tip of the inspection tube in a checkup time and an inspection process of switching the circuit switching part and making a pass/fail determination by the image recognition camera as to whether bubbles appear from the tip of the inspection tube in an inspection time.

An assembly is provided for performing start-up testing on a fluid flow control device. The assembly includes a retainer adapted to be disposed in a valve body of the fluid flow control device, and a sealing assembly coupled to a portion of the retainer and adapted to be disposed adjacent a valve seat of the fluid flow control device. The sealing assembly includes one or more sealing elements configured to provide a seal during start-up testing at a service temperature of between approximately 325 degrees Fahrenheit and approximately 1250 degrees Fahrenheit.

Method of testing a gas shut-down valve for a combustion engine, by which method the valve is placed in a chamber of a holder 1 and the valve in closed condition is influenced by a non-burnable test gas under pressure to check whether the valve seat and the sealing ring 6 of the valve are close. Further the opening and closing functions of the valve are to be checked.