Fourth Element (Light Monkey) Balanced P-Valve
The Fourth Element Balanced P-Valve (Light Monkey design) solves one of the most uncomfortable challenges in drysuit diving — managing bladder pressure over long, cold dives without surfacing. This balanced P-valve equalizes pressure between the inside and outside of the suit, meaning it seals reliably even when ambient pressure changes through depth, without requiring you to apply constant pressure to open it. Installation is straightforward for most suits, and the valve is built to the exacting tolerances expected from Fourth Element's technical product line. Add this to your drysuit setup and focus on the dive instead of the discomfort.
Pairs well with: Fourth Element Argonaut 3.0 drysuit, Xerotherm undersuit, and First Stage Service for a full annual gear checkup.