Subsea Actuators

SUBSEA LINEAR HYDRAULIC ACTUATORS

ACTUATOR  DESCRIPTION

Subsea linear hydraulic actuators for slab gate valves are designed for deep water application with hydraulic operating pressure of 3000psi or 5000psi as per Customer requirements.

Actuators are design in accordance with API17D with the addition of customer requirements when present.

All models are equipped with mechanical override intervention mechanism and can be provided with remote indicator (continuous or limit switches). The mechanical override can be designed not compressing the spring and bypassing the hydraulic piston

BASIC CHARACTERISTICS

  • API17D design as requested
  • All models available double acting (DA) and spring return (FSC or FSO)
  •  Hydraulic system assembled in clean environment (ISO8 clean room) and flushed to SAE AS4059 6B-F
  • Visual and remote (continuous or limit switches) position indicator
  • Balanced pressure cavities with local open or close compensation systems or common sea chest

actuator_linear

Linear DA

10 – 50 kN

50 – 100 kN

100 – 250 kN

250 – 500 kN

500 – 1000 kN

750 -1500 kN

 

Linear FSC/FSO

10 – 50 kN

50 – 100 kN

100 – 250 kN

250 – 500 kN

500 – 1000 kN

 

Linear Mechanical

10 – 50 kN

50 – 100 kN

100 – 250 kN

250 – 500 kN

500 – 1000 kN

750 -1500 kN

ROV rotary override Standard

Remote Indicator On Request

ROV linear override On Request

Open Comp. System Standard

ROV bypassing Spring On Request

Close Comp. System Standard

ROV bypassing Piston On Request

Common Compensator On Request

UNS N06625 overlay on dynamic seals As Requested

ISO13628-4/API17D qualification As Requested

SUBSEA QUARTER TURN ACTUATOR

ACTUATOR DESCRIPTION

Subsea quarter turn hydraulic actuators are designed for deep water application with hydraulic operating pressure of 3000psi or 5000psi as per Customer requirements. Actuators are design in accordance with API17D with the addition of customer requirements when present.

The core mechanism of the actuator can be Rack & Pinion or Helical Spline. All models can be equipped with mechanical override intervention mechanism and all models can be diver or ROV retrievable.

Helical Spline mechanical override can be designed not compressing the spring.

BASIC CHARACTERISTICS

  • API17D design as requested
  • All models available double acting (FAI) and spring return (FSC or FSO)
  •  Range of mechanical or hydraulic override and indicator mechanisms
  •  Hydraulic system assembled in clean environment (ISO8 clean room) and flushed to SAE AS4059 6B-F
  • Diver or ROV retrievable with provision of a connecting clutch system
  •  Visual and remote (continuous or limit switches) position indicator
  •  Balanced pressure cavities with open or close compensation systems

qurterturnsct

R&P FAI

1000-15000 Nm

20 – 70 kNm

50 – 150 kNm

150 – 200 kNm

200 – 500 kNm

 

R&P FSC/FSO

1000-15000 Nm

20 – 70 kNm

50 – 150 kNm

150 – 200 kNm

 

HS FAI

1000-15000 Nm

20 – 70 kNm

50 – 150 kNm

150 – 200 kNm

200 – 500 kNm

 

HS FSC/FSO

1000-15000 Nm

20 – 70 kNm

50 – 150 kNm

150 – 200 kNm

R&P Mechanism Standard

Remote Indicator On Request

HS Mechanism Standard

Open Comp. System Standard

ROV override Standard

Close Comp. System Standard

ROV Retrievable On Request

Adjustable end stops Standard

Diver Retrievable On Request

Retrievable switchbox On Request

ROV bypassing Spring On Request

Hydraulic Panel On Request

UNS N06625 overlay on dynamic seals As Requested

ISO13628-4/API17D qualification As Requested