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Double T-Valve

The Ammonite System Double T-Valve is a premium dual heating valve designed for divers seeking maximum reliability and flexibility for their drysuit heating systems. Featuring two independent power lines, it allows for custom configurations such as connecting a heated vest and heated gloves simultaneously (e.g., using Accu Thermo batteries). The low-profile, streamlined dome design minimizes the risk of snagging, while the full 360-degree rotation ensures optimal hose routing under either arm. Equipped with an extra-large recessed button, it is easily operated even with thick gloves, and the heavy-duty spring provides precise, progressive airflow control. The smooth backplate with ammonite-shaped ports prevents uncomfortable pressure on the chest and deflects cold air away from your undergarment. Available in Apeks and Si Tech standards, it installs easily without tools using the included steel key.