CURRENT INSULATION JOINT FOR PIPE-LINE Russian patent published in 2001 - IPC

FIELD: pipe-line joints providing protection against external corrosion and dielectric separation of one pipe-line member from another keeping pressure- tightness under high pressures. SUBSTANCE: a coil made of fibre glass plastic pipe is glued inside the groove of branch-pipes. The branch-pipes and the end of dielectric coil are threadedly connected together. The space between flanges is provided with fibre glass plastic ring. From the outside, current separation joint is wrapped with fibre glass plastic pipe. EFFECT: enhanced efficiency and protection of pipe-lines against corrosion, air-tightness and current separation of one pipe-line member from another. 1 dwg