Abstract: A grip coupling (18) for tubular conduit has a coupling body (20) formed by two halves (22, 24) which are joined along weld lines (26). The two halves (22, 24) each include a tapered entrance section (28) and an interior seal (30). The interior seals (30) are disposed inboard of the tapered entrance sections (28). Two annular-shaped shoulders (32) are formed in the interior surfaces of each of the two halves (22, 24), and are spaced apart to face inboard relative to the respective two halves (22, 24) when the two halves (22, 24) are joined together. Two grip rings (36) are disposed within respective ones of the two halves (22, 24), fitting against respective ones of the two annular-shaped shoulders (32). The grip rings (36) have grip teeth (40) and are tapered to extend radially inward in an inboard direction relative to the body (20).

Abstract: A hydrostatic test system for subjecting a workpiece or test specimen to a predetermined test pressure until the workpiece fails by developing a leak detectable by the test system. The hydrostatic test system is a modular system readily adaptable to, and able to incorporate therein, a number of different physical devices for regulating, controlling, detecting, and registering functions and activities pertaining to leak detection. Among the devices adaptable in the hydrostatic test system for detecting a leak condition in the workpiece is a differential pressure switch and a static pressure switch, a combination differential and static pressure switch, or an accumulator associated with either a pressure transducer or a high accuracy transducer. The leak condition may be visually signaled by a lamp or indicator light or the sensing of a leak condition may be visually output to a CRT screen.