Drysuit Systems · Exhaust Valves

D01 Rugged

Combines Pentagon Technology and a large-area Extended NRV for pressure-dependent venting, stable closure, and passive resealing, with broad mount compatibility across multiple drysuit port standards.

Be notified when this product becomes available.

Join the waitlist

DSV D01 Rugged exhaust valve, side view showing HYDPRO nameplate and vent slats

DSV D01 Series

Rugged top profile, pressure-dependent venting.

System configurations

DSV D01 Rugged valve, lever-actuated dump mechanism with membrane exposed

Pentagon Technology

Pressure-Dependent Dump Control. Pentagon Technology turns manual dump input into a controlled, pressure-dependent exhaust stroke without forcing the NRV membrane open. Its multi-point lever geometry relieves sealing preload only when suit pressure is present, supporting progressive venting and stable one-way sealing through each release.

DSV D01 Rugged valve disassembled, showing bayonet-mount cap and base

Fast Mount

Fast Service Access. Secure Module Engagement. Fast Mount gives immediate access to the sealing area without breaking down the operating module. The bayonet-style interface keeps maintenance fast, controlled, and repeatable, with secure module engagement after each service intervention.

DSV D01 Rugged valve, underside view of the threaded suit-side fitting

Cross-Platform Integration

Engineered for cross-platform integration, D01 is available with two suit-side interfaces, selected by drysuit port opening diameter: S-FIT for 34 mm (1.34 in) openings and L-FIT for 38 mm (1.50 in) openings.

Specifications

Stable Sealing. Repeatable Response.

D01 Exhaust series is built around Pentagon Technology and Extended NRV, combining lever-driven dump actuation with a large-area non-return membrane in the exhaust path. With up to five times the active surface of conventional drysuit valve membranes, the system supports higher-capacity exhaust response, stable closure, passive resealing, and reduced backflow risk. Fine cracking adjustment across 20 repeatable setpoints completes a drysuit exhaust platform built for controlled, repeatable venting.

Full technical specs (PDF)

Port interface. Cross-platform fit.

D01 is engineered for the most established drysuit port standards through dedicated S-Fit and L-Fit configurations, matching 34 mm (1.34 in) and 38 mm (1.50 in) opening diameters while preserving the same D01 functional architecture.

Built to integrate. True to your setup.

Whatever the field runs, HYDPRO builds to it natively: every established mount standard, thread, and host geometry, covered from the factory. Your setup stays as it is, integration stays clean, and the response repeats: the same command, the same result, on every dive.

Italian engineering. Predictable control.

Each HYDPRO device is engineered and manufactured in Italy: one chain from raw material to release. Polymer families are selected for constant immersion, precision-drawn brass runs on in-house CNC lines, and every device leaves built, tested, and signed off under one roof.

HYDPRO power unit manufacturing: CNC machining, hand assembly, and the finished valve underwater

Proven by divers.
Refined by decades.

Four decades in the water stand behind the current generation. What wears, what binds, what drifts out of tune comes back from real dives to the bench, and the next revision answers it. Control you can feel, refined one generation at a time.

Account

D01 Rugged

Specifications

DSV D01 CW Stealth

DSV D01 Rugged Plus

DSV D01 CW Rugged

DSV D01 Stealth

DSV D01 Rugged