Buckner Anti-Rotation Valves

Buckner twist lock coupler valves feature a secure, anti-rotation design that prevents risers from spinning or loosening during operation. Each Anti-Rotation Device is constructed from solid red brass for durability, economy, and recyclability, with a strong positive-action spring that keeps the lid securely closed. Available with high-visibility Tuff Top or solid brass lids, and select models include an Acme-threaded outlet (QB44 Series only). Wrench flats at the base allow for easy installation, and a chevron-shaped wiper seal helps reduce leakage around the key while inserted. The body includes a built-in drain hole to minimize debris collection. Buckner twist lock couplers support flow ranges from 5 to 100 GPM and handle pressures up to 150 PSI. A British version is available, and all models include a five-year warranty.