P04 Series Core, low-profile architecture, improved exhaust capacity.
low-profile overpressure relief architecture, with component geometry configured for compact integration and improved exhaust capacity. Compatible with P04 flanges.
- ① LID DESIGN – OPV P04
- ② SPRING DYNAMICS – CONIC COIL
- ③ PLATE PROFILE – SECTOR
- ④ GASKET TYPE – SLOT-FIT
LOW-PROFILE. HIGH-CAPACITY EXHAUST.
The P04 Series defines a low-profile relief platform for buoyancy and inflatable systems built around the P04 interface.
Its reduced external diameter keeps overall bulk contained while maintaining high-capacity exhaust, supporting clean integration in layouts where space and installed envelope need to stay controlled. A compact platform developed for tighter integration constraints.
P04 OPV
KEY FEATURES
Defined by Series interface, profile architecture, and platform function.
Sharp
TOP PROFILE
Clean-cut profile
Crisp geometry.
Conic Coil
SPRING GEOMETRY
Conical geometry maximizes packaging efficiency and extends usable stroke for higher flow within a lower profile valve design.
SECTOR
GASKET PLATE
Sector profile with increased clearance geometry for higher capacity.
SLOT-FIT
GASKET DESIGN
Slot fit gasket with dedicated knot pocket for compact, low profile assembly.
EXHAUST CAPACITY
Maximum exhaust capacity
Flange diameter ~45 mm / ~1.77 in Medium profile
Min collar height ~10 mm / ~0.39 in
Trapezoidal thread, 2.5 mm pitch
5-Ridge alternating interlock coupling section
ASSEMBLY & COMPONENT VIEWS
Complete assembly views and component breakdown.
Clean-cut profilernCrisp geometry
AVAILABLE PULL KNOB OPTIONS
For OEM builds, multiple pull knob configurations are available at configuration stage, aligned with series supply.
BUOYANCY SYSTEMS · OVERPRESSURE RELIEF VALVES
CLEARANCE-DRIVEN DESIGN.
WIDE INTERFACE
COVERAGE.
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.
