North American Specialty Products has enhanced its time- and performance-proven Yelomine restrained-joint pipe system to carry higher pressures. The entire system — both pipe and joint coupling — is now qualified to 350 psi, using industry-standard testing and pressure rating methodologies. The updated Yelomine system brings the efficiency and durability of the company’s pipe to a wider range of high water transfer applications. It features the proprietary Certa-Lok restrained-joint system, which utilizes precision-machined grooves and a high-strength thermoplastic spline to create a fully circumferential, securely locked restrained joint. The updated system features a stouter spline and a thicker pipe wall. The 350-psi pipe system is available in 4-, 6- and 8-in. outside diameters.