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EVERLOC+ R-20 connections are for use with RAUPEX pipes and PRO-BALANCE manifolds and manifold circuit isolation valves (Art. 302047-001). These swivel nut connections install onto PRO-BALANCE manifolds without special tools. All fitting sizes include EVERLOC+ insert with installed O-ring and swivel nut in one-assembly. Installation of RAUPEX pipe is performed with EVERLOC+ compression-sleeve tools.