Abstract: A rotary coupling includes an annular outer section which has a female end, a threaded portion, and a Z-ring relief. A connector pipe has a connection end, a shoulder, and a seal end. A Z-ring is housed within the Z-ring relief and packing seals are housed within a packing chamber; and a retainer ring is threadably received into the threaded portion of the outer section. The retainer ring receives compression screws there-through, wherein in the engaged position the compression screws urge a packing end of the Z-ring longitudinally against packing seals thereby compressing the packing seals into the packing chamber creating a seal. The compression screws are movable between an engaged and disengaged position in order that in the disengaged position the compression pressure against the Z-ring and packing seals is released by backing off the compression screws without disassembly of the rotary coupling.

Abstract: A live loaded ball pipe joint design accommodates for seal decay without the need for maintenance or adjustment. The pipe ball joint includes a casing having a socket section with a substantially spherical interior surface. A ball pipe section is received in the socket section. A seal is received in an annular groove within the socket section and is disposed against the ball segment. A push ring is disposed against the seal and a spring is disposed against the push ring. A retainer is secured to the casing and is disposed against the spring for loading the spring against the push ring. The loaded spring accommodates for decay of the sealing components and automatically adjusts the position of the push ring as the sealing components decay.

Abstract: The present invention is a rotary coupling including an annular outer section which has a female end, a threaded portion, and a Z-ring relief; a connector pipe which has a connection end, a shoulder, and a seal end; a Z-ring housed within the Z-ring relief and packing seals housed within a packing chamber; and a retainer ring threadably received into the threaded portion of the outer section. This retainer ring receives compression screws there-through, wherein in the engaged position the compression screws urging a packing end of Z-ring longitudinally against packing seals thereby compressing the packing seals into the packing chamber creating a seal. In one embodiment, the rotary coupling features compression screws which are moveable between an engaged and disengaged position in order that in the dis-engaged position the compression pressure against the z-ring and packing seals is released by backing off the compression screws without disassembly of the rotary coupling.