Hellermanntyton conduit y connector and reducer hg y series hellermann tyton 166 25801 the hellermanntyton 166 25801 hg16 y13 is a conduit y connector from the hg y series this fast fit y connector reduces the conduit size from an entry size of 16mm to two exit sizes of 13mm each the connector has been manufactured from polyamide 66 pa66 and is free from halogen sulphur and phosphorus hellermanntyton 166 25801 hg16 y13 conduit y connector ip66 entry 16mm exit 13mm