D01 Exhaust platform. Rugged top profile, pressure-dependent venting with added passive sealing redundancy.
Inside the D01 Plus Exhaust architecture.
Manual input relieves sealing preload, keeping exhaust pressure-dependent.
Quick-release module for fast, straightforward maintenance.
Extended NRV with a secondary passive membrane for added sealing redundancy.
Progressive venting. Passive redundancy. Extended sealing margin.
DRYSUIT SYSTEMS · EXHAUST VALVES
PRESSURE-DEPENDENT DUMP CONTROL.
DUAL PORT STANDARDS.
PENTAGON TECHNOLOGY. DUAL NRV. PASSIVE REDUNDANCY.
D01 Exhaust series in Plus configuration is built around Pentagon Technology and Extended NRV, adding a secondary passive NRV membrane within the same core exhaust architecture.
The enlarged primary membrane supports higher-capacity exhaust response and stable passive resealing, while the secondary membrane adds redundancy against atypical water-ingress scenarios.
Fine cracking adjustment across 20 repeatable setpoints completes a drysuit exhaust platform built for controlled venting with added sealing margin.
D01 PLUS EXHAUST
core features
D01 Plus Exhaust core features, built around enhanced sealing stability, 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. REINFORCED BY REDUNDANCY.
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.
D01 Exhaust platform. Rugged top profile, pressure-dependent venting with added passive sealing redundancy.
