OPV P03

Buoyancy Systems · Overpressure Relief Valves

OPV P03

Combines patented Core-Sink Technology with an ultra-flat relief architecture and 600 L/min exhaust capacity for reduced bulk and snag exposure, with native compatibility across the P03 Series flange family.
Lid Design:
Relief setting (Cracking Pressure):

CONFIGURATION

Pull knob
Type-C

Nominal opening pressure
≈ 0.18 bar (2.61 psi)

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OPV P03 in side profile, ribbed lid linked by a corrugated hose to the connector fitting
  • OPV P03 in side profile, ribbed lid linked by a corrugated hose to the connector fitting
  • OPV P03 face-on view of the ribbed lid with hose routed to the connector
  • Exploded view of the P03 valve: lid, coil spring, seat and diaphragm in sequence
  • P03 valve close-up on a quilted fabric panel, Powered by HYDPRO branding ring visible
  • P03 valve mounted on a padded fabric panel, three-quarter angle showing zip trim and dump toggle
  • OPV P03 in side profile, ribbed lid linked by a corrugated hose to the connector fitting
  • OPV P03 face-on view of the ribbed lid with hose routed to the connector
  • Exploded view of the P03 valve: lid, coil spring, seat and diaphragm in sequence
  • P03 valve close-up on a quilted fabric panel, Powered by HYDPRO branding ring visible
  • P03 valve mounted on a padded fabric panel, three-quarter angle showing zip trim and dump toggle
HYDPRO OPV valve macro on wet drysuit fabric, then diver wearing it while surfacing

OPV P03 Series

Ultra-flat profile tuned for minimal snag exposure, with improved exhaust capacity.

OPV P03: 600 l/m exhaust, Core-Sink ultra-flat interface, conic coil spring, sector gasket plate

Specifications

Ultra-flat profile. Streamlined by design

The P03 Series defines the ultra-flat relief platform for buoyancy and inflatable systems built around the P03 interface. Core-Sink Technology enables ultra-flat integration while maintaining mechanical stability on flexible inflatable structures. Improved exhaust capacity completes a relief architecture built for streamlined layouts with minimal snag exposure.

 Full technical specs (PDF)

Interface architecture. Defined by Series.

Each OPV Series is engineered around a dedicated flange geometry, defining fit, sealing and retention at the buoyancy-device boundary. Lid design and valve configuration vary within the Series; compatibility follows the interface geometry.

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.

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