A sealing system for establishing real time sealing between two flange members is provided. The sealing system includes a seal assembly disposed between the flange members. The seal assembly includes an o-ring seal component held between an outer seal component and an inner seal component. A clamp body including a first clamp arm and a second clamp arm receive the flange members and the seal assembly positioned between the flange members. A coupling device of the sealing system is used to apply torque to clamp arms to draw them each other resulting biasing the flange member toward each other to establish sealing. Each of the clamp arms includes at least one window opening to expose a portion of outer seal component that includes an indicator configured for displaying an identification feature of the o-ring seal component of the sealing assembly.

A method for producing a connection, between attachment ends of two components that are to be connected, by means of two connection flanges, each of which is provided at one attachment end, wherein a sealable cavity is formed between those sides of the two connection flanges that are to face each other, wherein a closable and, if necessary, openable channel is provided between the cavity and a surrounding environment, and a negative pressure is generated in the cavity and the channel is closed, wherein a trigger mechanism is provided which is configured to open the channel in an automated manner upon the occurrence of a trigger criterion, and also to a corresponding connection device and to the use thereof.

A pipe repair fitting (10) includes a pair of opposed generally semi-cylindrical sleeve members (12, 14) including side flanges (16, 18) and first fasteners (20) that engage the side flanges (16, 18) for fastening and encircling the sleeve members (12, 14) together onto a pipe to be repaired. Each sleeve member includes a central longitudinal semi-cylindrical portion (22). A first seal member (26) is disposed in at least one of the longitudinal semi-cylindrical portions (22) for sealing the sleeve members (12, 14) with respect to each other. Semi-annular clamp housings (24, 25) extend from opposite ends of the longitudinal semi-cylindrical portion (22). Ends of the semi-annular clamp housings (24, 25) include opposing clamp members (27). One or more second fasteners (30) tighten the clamp members (27) towards each other so as to apply a clamping force on the pipe to be repaired. At least one end seal (28) is disposed in the semi-annular clamp housings (24, 25).

A pipe restraint assembly includes a restraint body configured to be removably attached to a portion of pipe. The portion of pipe is associated with a postulated pipe failure associated with a release of high pressure fluid. A plurality of apertures penetrate through the restraint body and are positioned proximate to a location of the postulated pipe failure. The apertures are configured to provide a number of passageways for the fluid to exit from the location of the postulated pipe failure and to be released outside of the restraint body. One or more restraint devices maintain the position of the apertures relative to the location of the postulated pipe failure.

An embodiment fluid recovery structure includes a body having an interior cavity, ports integrally joined to first walls of the body and having port walls that extend away from the body, with each of the ports having a port opening that is contiguous with the interior cavity, and a drain structure integrally joined to a second wall of the body and having a drain hole that extends from the interior cavity through the drain structure.

A flange fitting for attaching to double wall tubes includes a fitting center port, a plurality of fitting mounts, inner and outer seal surfaces, fluid communication ports, and a connections surface. The fitting center port extends through the fitting for passing a primary fluid flow. The fitting mounts are spaced radially away from the center port for receiving fasteners. The inner and outer seal surfaces are predominantly flat. The fluid communication ports for pass a secondary fluid flow and fluid communication ports extend through the fitting from between the inner and outer seal surfaces to the connection surface between the inner sleeve connection and the outer connection. The connection surface is on a side of the fitting opposing the seal surfaces. The connection surface includes an inner sleeve connection and an outer connection.

There is provided a technique that includes: two O-rings arranged between flanges facing each other, wherein the flanges connects pipes and the two O-rings seals an inside of each of the pipes from outside in a double seal manner; a communication hole provided at one of the flanges and communicating with a space surrounded by the two O-rings; a monitor pipe capable of communicating with the communication hole; a pressure gauge connected to the monitor pipe and capable of measuring an inner pressure of the monitor pipe; a valve configured to be capable of being opened and closed to fluidly connect the monitor pipe to an exhaust apparatus; and a controller configured to be capable of controlling an opening and closing operation of the valve so as to maintain a pressure measured by the pressure gauge within a predetermined pressure range lower than inner pressures of the pipes.

A vacuum system pipe coupling includes a first coupling member and a second coupling member. The vacuum system pipe coupling has a seal system that is to be positioned to seal between the first and second coupling members and a securing system to releasably secure the first coupling member to the second coupling member. The seal system has an inner seal element and an outer seal element spaced from the inner seal element. The first coupling member is provided with a flow passage configured to conduct a pressurized gas to a space between the inner and outer seal elements to shield the outer seal element from fluid flowing through the pipe coupling in the event of failure of the inner seal element.

A hydraulic cylinder unit (1) having a hydraulic cylinder (2), a piston (3) which can be moved in the hydraulic cylinder (2), and a servo valve (7). The piston (3) separates working volumes (5A, 5B) of the hydraulic cylinder unit (1) from one another. The servo valve (7) is connected to a hydraulic pump (8), a tank (9), and the working volumes (5A, 5B). The servo valve (7) is supplied with a pump pressure (pP) via the hydraulic pump (8). The tank (9) has a tank pressure (pT). The servo valve (7) is adjusted to a defined valve position (y). A piston position (z) of the piston (3) in the hydraulic cylinder (2) and working pressures (pA, pB) which are applied to the working volumes (5A, 5B) are detected. An analysis device (12) ascertains a leakage coefficient () of the hydraulic cylinder unit (1) using the piston position (z), the working pressures (pA, pB), the valve position (y), the pump pressure (pP), and a value which represents the tank pressure (pT) in connection with time-invariant parameters of the hydraulic cylinder unit (1).

A connector for a pipeline, in particular for conveying hydrocarbons, extends along a longitudinal axis and has a gripping portion configured to be fitted around and clamped to the outer face; a sleeve portion, which is mounted in sliding manner to the gripping portion; a metal front gasket configured to be placed between the front end face and a face of the sleeve portion; and linear actuators connected with the gripping portion and the sleeve portion to axially compress the metal front gasket between the front end face of the pipeline and the face of the sleeve portion.