Patent ID: 7766092

Claim:
A system comprising: a plurality of fluid pipe lengths in flow communication formed from a CPVC composition; a first type of mechanical fixture, wherein the first type of mechanical fixture comprises a coupling device operative to sealingly engage at least one pair of the plurality of pipe lengths in close end to end relationship without the use of solvent cement; and wherein the coupling device includes a resilient annular seal comprised of a material chemically compatible with the CPVC composition, and wherein each of the pipe lengths of the at least one pair includes a continuous annular groove formed in the pipe wall at a predetermined distance from an end thereof, wherein the portion of the pipe wall on each pipe length between the pipe end and the groove comprises a sealing surface, and wherein the resilient annular seal is engaged with the sealing surfaces of the one pair of grooved pipe lengths; and wherein the coupling device comprises: a pair of coupling segments, wherein each coupling segment comprises an arcuate body having a first end, a second end, an interior concave surface extending between the first end and the second end, and a longitudinal channel extending along the concave surface; and at least one mechanical fastener operative to detachably connect the pair of coupling segments; wherein when the coupling device is assembled, the resilient annular seal extends within the longitudinal channel of each segment; a second type of mechanical fixture, wherein the second type of mechanical fixture comprises a branching device operative to sealingly engage a main pipe length and a branch pipe length in close perpendicular relationship at a branch location without the use of solvent cement, wherein the pipe wall of the main pipe length includes an orifice therethrough at the branch location; and wherein the branching device includes a resilient sealing member comprised of a material chemically compatible with the CPVC composition, and wherein a sealing surface of the resilient sealing member is engaged with the main pipe length in a sealing area immediately about the orifice.