Compression fitting for assembling PVC pipes, has protection ring interpolated between clamping ring and o-ring seal, and having groove with detent unit complimentary to detent unit set at latter ring in contact with former ring

摘要

The fitting has a clamping ring (6) extending at an interior of a hollow body (2) and a screw (3) engaged on a threading at an exterior of the body. An o-ring seal (4) is lodged between the ring (6) and a shoulder. A protection ring (5) is interpolated between the ring (6) and seal. The ring (5) has a groove with a detent unit complimentary to a detent unit arranged at an end of the ring (6) in contact with the ring (5).