Halcyon Streamline Balanced P-Valve

Enjoy longer, warmer dives without compromising comfort thanks to the Halcyon Streamline P-Valve. Its low-profile design minimizes drag and snag hazards.

Built for performance, the balanced valve system ensures continuous flow while preventing leakage and backflow—even at depth.

With medical-grade components and rugged construction, the Streamline P-Valve is the trusted choice for demanding divers exploring caves, wrecks, or cold-water environments.

The Halcyon Streamline P-Valve is a precision-machined, balanced drysuit relief valve designed for comfort, reliability, and long-duration diving. Built from a single piece of durable Delrin®, it features dual check-valve redundancy to help prevent water ingress while allowing effortless suit venting. Trusted by explorers worldwide, the Streamline P-Valve delivers dependable performance in demanding environments, including cold water and extended technical dives.

Specifications

• Type: Balanced drysuit P-Valve system
• Material: Machined from a single solid piece of Delrin®
• External Cap: Threaded cap protruding approx. 5/8 in (15 mm) from the suit surface
• Assembly: Internal and external components bonded with Aquaseal for watertight reliability
• Valve Design: Dual check-valve system providing redundancy and helping prevent water ingress
• Function: Allows suit venting through the catheter and tubing, with the option to fully seal external water
• Pressure Management: Secondary check valve equalizes the suit gas with the catheter assembly to reduce pressure resistance
• Design Benefit: Balanced, low-pressure design that reduces resistance during use