OPV P01

Buoyancy Systems · Overpressure Relief Valves

OPV P01

Combines standard-profile relief geometry with 450 L/min exhaust capacity for stable, dependable overpressure relief, with native compatibility across the P01 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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Angled view of the OPV P01 installed at the bladder corner, hose barb and ribbed seam visible
  • Angled view of the OPV P01 installed at the bladder corner, hose barb and ribbed seam visible
  • OPV P01 mounted on a drysuit inflator bladder, fluted dial and HYDPRO branding ring visible
  • Front view of the OPV P01 cap showing its deeply fluted ridge rim and gear-like vent cutouts
  • OPV P01 overpressure valve in profile, ribbed fin-like lid linked to an elbow fitting by a coiled hose
  • OPV P01 exploded view: fluted lid, coil spring, flat piston disc with center boss and clear washer
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • Angled view of the OPV P01 installed at the bladder corner, hose barb and ribbed seam visible
  • OPV P01 mounted on a drysuit inflator bladder, fluted dial and HYDPRO branding ring visible
  • Front view of the OPV P01 cap showing its deeply fluted ridge rim and gear-like vent cutouts
  • OPV P01 overpressure valve in profile, ribbed fin-like lid linked to an elbow fitting by a coiled hose
  • OPV P01 exploded view: fluted lid, coil spring, flat piston disc with center boss and clear washer
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01
  • OPV P01

OPV P01 Series

Standard-profile, proven relief architecture.

OPV P01: 450 l/m exhaust, Ridge/Elite/Stone profile options, base coil spring, 53mm 8-ridge interface

Specifications

Standard-profile. Proven platform.

The P01 Series defines the standard-profile relief platform for buoyancy and inflatable systems built around the P01 interface. Based on proven relief architecture, it supports stable integration and straightforward relief function across established system layouts. A clear, established platform for standard-profile relief integration.

 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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OPV P01 Shield

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