Introducing the new drain-off cock. T-DOC features an innovatively engineered, solid brass insert and an upgraded O-ring seal. With this improved design, concerns of stuck or deteriorated washers are effectively eliminated. The robust, solid brass insert and O-ring seat provides a secure closure for the drain-off, ensuring leak-free performance and preventing any instances of washer obstruction. These advancements optimise the T-DOC’s ability to facilitate effortless drainage and superior sealing, delivering unparalleled convenience and peace of mind.