Halcyon Streamline Balanced P-ValveHalcyon Streamline Balanced P Valve Balanced valve design for effortless operation and minimal back pressure Low profile, sleek design minimizes drag and potential entanglement Unique cover engineered for easy use, even with thick dive gloves Constructed from robust, solid Delrin for exceptional durability Integrated check valve enhances safety by preventing water ingress Improves comfort and extends bottom time for drysuit divers Suitable for both