Scotch yoke actuator
API6D Top entry ball valve,
36 inch. ASME 900, Buttwelding connections, operated by Pneumatic spring return actuator
For emergency shutdown in pipeline system
API6DSS Side-entry ball valve,
12 inch. ASME 300, Raised face connections, operated by subsea double acting hydraulic actuator
Subsea valve, water depth 36 meters
as per API 6DX - EN15714 as per ASME VIII
Offshore
Process
Pipelines
Standard range: -29° to 100°C (-20 to 212°F)
Pneumatic cylinder: Up to 12 barg
Hydraulic cylinder: Up to 210 barg
Compact size: up to 2500 Nm
Standard size: up to 6500000 Nm
Instrument air
Nitrogen
Sweet gas
Pneumatic single and double acting
Hydraulic single and double acting
IP66 per EN60529 (IP68 on request)
Compliance with PED 97/23/EC
Compliance with ATEX
SIL Certification
We have extensive experience in the design and manufacturing all type of Scotch Yoke Actuators for on/off or Emergency shut down & Blowdown services.
The Scotch Yoke design provides peak torque at the break and end point of the stroke, ensuring maximum reliability and is available in both symmetric and canted designs to meet specific applicaton requirements.
The SY mechanism is fully contained within housing which is designed and tested against full differential pressure. To minimize cost and weight, actuators have a modular construction. The hydraulic/pneumatic cylinder and the spring cartridge can be connected to the left or to the right side of the housing to fit with the specific fail-safe action.
Velan ABV has a dedicated line of heavy-duty single-acting compact actuators containing a cylinder assembly and spring for high performance.