Double-acting and spring return hydraulic quarter-turn actuators for

ON/OFF and modulating control of valves in heavy-duty service suitable

for high pressure supply. Models available for output torques to 750.000 Nm.

General Application

OLGA-H and OLGAS-H series hydraulic actuators are designed for the

control of quarter turn ball, butterfly, plug or damper style valves.

Technical Data

Design Pressure (MAWP)

OLGA-H/OLGAS-H

With standard CS:

352 barg maximum (based on actuator model,please contact the

factory to receive confirmation)

With optional SS: Please contact the factory

OLGAS-H-QA: Contact factory

MOP

With standard CS tie rods:  Refer to torque table

With optional SS: Please contact the factory

Supply medium: Hydraulic oil, special versions for fire resistant fluids

Output Torque

OLGA-H: Double-Acting torque up to 750.000 Nm

OLGAS-H/QA:

Spring starting torque up to 335.000 Nm

Spring ending torque up to 235.000 Nm

Higher values available with special versions

Ambient Temperature

Standard range: -20 to +100 °C / -4 to +210 °F

Extended range: -60 to +100 °C / -70 °F to +210 °F

MAWP: 

Maximum Allowable Working Pressure is the pressure defined

for the design of the actuator pressure containing parts.

MOP: 

Maximum Operating Pressure is pressure that generates the torque

used to engineer the mechanical loaded parts of the actuator and

it is the one required to produce the Maximum Operating Torque

(MOT) of the actuator.