The TBH Series features a low maintenance design with its new patent pending System2 Sealing Technology. Assisting users in protecting property and life, a standard integral lock-out feature secures onto the body of the valve. Actuator ready design with ISO 5211 pattern – on all sizes. The System2 Sealing Technology utilizes the upstream seat as a backup to the downstream seat and enhances the sealing of the downstream seat. This insures longer life cycle and performance of the valve vs. conventional PTFE seats or seats with O-ring backing where uneven seat wear results in early failure mode. Available in sizes 1/4˝ through 2" / DN15 - DN50 in PVC and CPVC materials, the TBH Series are fully pressure rated for 250 PSI / PN16 at 70°F/23°C non-shock across all sizes and materials. Lastly, the TBH is available with IPS or DIN/EN socket, threaded and flanged end connections.