A hydrostatic pipe tester is especially designed for testing pipe at high pressures safely. Threaded tension rods are supported on both sides of the pipe under test such that their axes are coplaner with the pipe under test, and coupling assemblies couple the pipe under test to the threaded tension rods within the plane. A novel bleeding assembly and a novel check valve is also disclosed.

A test head for enclosing pipe ends to test any diameter pipe within a plurality of pipe diameters in a preselected range which test head has a seal ring assembly which has a resilient body with a counterbore of a larger volume than non-resilient segments in the counterbore and mounted on the body to provide a volumetric space or gap between the segments and resilient body to enable the resilient body to initially move in response to fluid pressure toward sealing relation with the pipe without e...

A thermoset, noncircular plastic valve ball is rotatably mounted in a valve chamber formed in a thermoset, ported plastic valve body which is adapted to be secured between a pair of thermoset, ported plastic end caps. A thermoset plastic valve stem extends through the wall of the valve body and is engaged with the valve ball. Self-adjusting annular sealing structures are located at the valve body ports for forming fluid tight seals with the noncircular valve ball. The valve body, end caps, valve...

In accordance with an illustrative embodiment of the present invention, a pipe alignment tool comprises upper and lower pipe clamp assemblies connected together in axial alignment by hydraulic cylinders that are selectively operable to adjust the vertical separation of said clamp assemblies, a first set of slips on said upper clamp assembly for gripping and supporting an upper pipe joint, a second set of slips on said lower clamp assembly for gripping a pipe joint extending into the wall, and in...

A powered pipe thread cleaner for oil pipe and oil casings has a housing which defines a sump for collecting dirty solvent during the thread cleaning process. The thread cleaner is of the driven brush type and employs specially configured brushes and brush support structures for minimal interference where the flow of dirty fluid within the housing during cleaning. The thread cleaner is designed for operator comfort and ease of operation.

In accordance with an illustrative embodiment of the present invention, a pipe alignment tool includes upper and lower, vertically aligned clamp assemblies that can be opened and closed in order to encircle and grasp adjacent threaded end sections of well pipe to bring them into precise vertical alignment. The upper clamp assembly can be lowered toward the lower clamp assembly while the upper pipe section is rotated in order to at least partially make up the threaded connection.

An improved pipe coupling protector including a thread protector with sleeve is disclosed. Moreover, a method of installation is also set forth. When manufactured, the sleeve is sized to fit over the threads on the exterior of a pipe end and has a surrounding end shoulder with a transverse cap. An undercut defines the cap for removal by puncturing action to enable the sleeve to move up the threads. At the time of installation, the pipe is threaded to a coupling. A lubricant or sealant is applied...

Method and apparatus to hydrostatically test tubular members including a housing to enclose each end of the tubular member, which housing supports a unitary seal-lock ring assembly, the assembly having an annular resilient body with non-resilient L-shaped segments adjacent at least one end, anti-extrusion means adjacent the other end and an adjacent inner surface of the resilient body to close, seal and lock either or both the housings, selectively, about the open tubular member ends without clo...

A body is provided with longitudinally spaced first and second annular grooves for receiving first and second longitudinally spaced annularly spaced seal and lock ring segment assemblies therein to sealingly engage and lock with a pipe coupling and a single pipe end engaged therewith for forming a fluid receiving test chamber that extends across the single connection between the pipe end and the coupling. A fluid passage in the body conducts fluid to move said first and second seal and lock ring...

A trash compactor is especially designed for industrial and commercial usage. A compacting unit is driven by an electricity-free drive unit for allowing applications in hazardous environments, such as offshore drilling rigs. Specifically, a hydraulic pump is pneumatically driven for powering the compactor. A container used in the compactor is specially designed for facilitating removal of the relatively bulky and heavy compacted trash.