D Series Subsea Hydraulic Actuator | 330m Deep-Water Service

D Series 330m Subsea Hydraulic Actuator 

Beyond Ballast Tanks: Engineered for Subsea Valve Control.

Built for the 330m Pressure Envelope

Unlike shallow-water actuator platforms, the D Series is engineered for 330m deep-water service. As a subsea rack and pinion 90° quarter-turn hydraulic actuator, it features a reinforced heavy-duty housing designed to maintain seal integrity and mechanical stability under 3.3 MPa (330m) hydrostatic pressure. The D Series is built for subsea valve control, deep-water manifolds and long-term offshore installations.

Basic Data

Design Standard: BS EN 15714-4: 2025

Depth Rating: 330m continuous submersion

Single-Acting Torque: 100-1,000Nm

Double-Acting Torque: 300-2,700Nm

Response Time: 0.5s – 1.0s

Rotation: 90° ± 3°

Working Pressure: 160 Bar internal hydraulic pressure

Structure: High-strength reinforced body with multi-barrier deep-sea sealing.

Protection: IP68 rating, designed for 330m submersion

Working Temperature: -20°C to +80°C

Corrosion Class: ISO 12944 IM4 (Options: C5-H / CX)

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Native Integration: D Series Subsea Packages 

High-integrity actuation packages engineered for 330m subsea infrastructure and high hydrostatic pressure.

Strategic Material Selection: A high-performance configuration featuring a C95800 nickel-aluminum bronze PFB pisition feedback box and IM4 protection for D Series actuators.

Butterfly Valve Options: Standard C5-M Marine Coating is avaliable for intermittent submersion; Full C95800 Bronze bodies are available for long-term deep-sea immersion.

Deep-Sea Pedigree: Designed to withstand 3.3 MPa external hydrostatic pressure at 330m depth with reinforced structural integrity.

Actuation Type: Available in single-acting spring return or double-acting configurations.

System Integrity: IP68 Rated; each package undergoes a 3.3 MPa functional and signal integrity test.