Disclosed is a method for detecting a blowout in an irrigation pipe being formed by an extrusion manufacturing process. The irrigation pipe is extruded. Further a positive air pressure inside the irrigation pipe may be created by circulating air through the irrigation pipe during the extrusion manufacturing process. The irrigation pipe with positive air pressure is then fed into a tank, wherein the tank comprises a coolant liquid. Further at least one air bubble is trapped at a surface of the tank.

Disclosed is a method for detecting a blowout in an irrigation pipe being formed by an extrusion manufacturing process. The irrigation pipe is extruded. Further a positive air pressure inside the irrigation pipe may be created by circulating air through the irrigation pipe during the extrusion manufacturing process. The irrigation pipe with positive air pressure is then fed into a tank, wherein the tank comprises a coolant liquid. Further at least one air bubble is trapped at a surface of the tank.

A method for manufacturing a leak tight porous component includes the steps of forming a porous component; applying a first application of a surface sealant layer to the component; providing pressurized gas into a wall of the component via a known leak in the surface sealant; applying liquid to the component while pressurized gas is flowing into the wall of the component via the known leak. The method further includes the steps of inspecting the component for the formation of bubbles; identifying a new leak area in the component; removing at least a substantial amount of liquid from the component; and applying a second application of surface sealant to the new leak area.

A method for manufacturing a leak tight porous component includes the steps of forming a porous component; applying a first application of a surface sealant layer to the component; providing pressurized gas into a wall of the component via a known leak in the surface sealant; applying liquid to the component while pressurized gas is flowing into the wall of the component via the known leak. The method further includes the steps of inspecting the component for the formation of bubbles; identifying a new leak area in the component; removing at least a substantial amount of liquid from the component; and applying a second application of surface sealant to the new leak area.

A testing apparatus may include a stand having an aperture and a platform adjacent to the aperture, a clamp adjacent to the platform and configured to hold a coupon, and an actuator within the aperture. The actuator is configured to impart a first force on the platform and the coupon at a specified frequency. The testing apparatus may also include a displacement sensor adjacent to the stand and configured to measure a displacement of the coupon and circuitry connected to the actuator and the displacement sensor with the circuitry configured to collect data from the actuator and the displacement sensor.

A testing apparatus may include a stand having an aperture and a platform adjacent to the aperture, a clamp adjacent to the platform and configured to hold a coupon, and an actuator within the aperture. The actuator is configured to impart a first force on the platform and the coupon at a specified frequency. The testing apparatus may also include a displacement sensor adjacent to the stand and configured to measure a displacement of the coupon and circuitry connected to the actuator and the displacement sensor with the circuitry configured to collect data from the actuator and the displacement sensor.

A watertightness testing method for testing watertightness of a joined section (4) where one end section of a second pipe (3) is joined to a first pipe (2), the watertightness testing method including: inserting a testing device body (21) into the first pipe (2); attaching an assembling device (80) to another end section of the second pipe (3); attaching a pulling device (82a) to the assembling device (80) and connecting the pulling device (82a) to a strap-shaped member (112a) having been wound in advance around an outer circumference of the first pipe (2); operating the pulling device (82a) and pulling the strap-shaped member (112a) in a separating direction of the second pipe (3) to have a reaction force generated in the second pipe (3) cause the second pipe (3) to be pulled in a joining direction (G), the one end section of the second pipe (3) to be inserted into the first pipe (2), and the second pipe (3) to be joined to the first pipe (2); and operating a moving operation rod (22) provided in the testing device body (21) from outside of the other end section of the second pipe (3) in a state where the second pipe (3) is being pulled in the joining direction (G) to move the testing device body (21) to the joined section (4).

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.

A testing apparatus may include a stand having an aperture and a platform adjacent to the aperture, a clamp adjacent to the platform and configured to hold a coupon, and an actuator within the aperture. The actuator is configured to impart a first force on the platform and the coupon at a specified frequency. The testing apparatus may also include a displacement sensor adjacent to the stand and configured to measure a displacement of the coupon and circuitry connected to the actuator and the displacement sensor with the circuitry configured to collect data from the actuator and the displacement sensor.