D01 Exhaust platform. Rugged top profile, pressure-dependent venting.
Inside the D01 Exhaust architecture.
Manual input relieves sealing preload, keeping exhaust pressure-dependent.
Quick-release module for fast, straightforward maintenance.
Large-area membrane for higher-capacity exhaust, stable closure, and passive resealing.
Progressive venting. Stable closure. Passive resealing.
DRYSUIT SYSTEMS · EXHAUST VALVES
PRESSURE-DEPENDENT DUMP CONTROL.
DUAL PORT STANDARDS.
PENTAGON TECHNOLOGY. EXTENDED NRV. FAST MOUNT SERVICE ACCESS.
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.
D01 EXHAUST
core features
D01 Exhaust core features, built around stable sealing, controlled venting, and repeatable exhaust response.
EXHAUST CAPACITY
Maximum exhaust capacity
PATENTED SYSTEM
Guided lever driven exhaust stroke that returns to seal on release, keeping dump modulation clean and repeatable.
FRAMEWORK
Extended non return valve design for stable closure and reduced backflow risk through pressure swings and wet handling.
MAINTENANCE SYSTEM
Service built bayonet mounting: quick module release exposes the maintenance area without full teardown.
CRACKING PRESSURE RANGE
Fine cracking adjustment with 20 repeatable setpoints across a 0-25 mbar range.
Rugged
TOP PROFILE
Reinforced structure
Rugged rib profile
Engineered for broad drysuit integration
across established port standards,
with S-FIT / L-FIT configurations for clean, repeatable mounting
EXTENDED PLATFORM COMPATIBILITY
Engineered for cross-platform integration, the D01 Series supports standard drysuit platforms through two native configurations: S-FIT and L-FIT.
Port Fit
Configured for 34 mm (1.34 in) drysuit port openings.
CRAFTED FOR VENTING. BUILT FOR CONTROL.
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.
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.
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.
