General Description:

Ductile iron rack and pinion actuators are specifically designed to operate quarter-turn valves, such as ball, butterfly and plug valves in highly corrosive environments such as offshore platforms or vessels.

The linking surfaces of the actuators are designed according ISO 5211 and VDI/VDE 3845. Design of the actuator is constructed according ISO9001:2008, IEC 61508:2010, LOM 05ATEX6032and European Pressure Equipments Directive 97/23/EC 3.10.

Those actuators are certified according to ATEX y GOST and manufactured according to ISO9001:2008 standard with constant improvement policy.

Quifer Actuators ha estado fabricando actuadores de cremallera y cremallera de hierro dúctil desde hace más de 25 años. La gama de actuadores de piñón y cremallera de hierro dúctil está específicamente diseñada para operar válvulas de cuarto de vuelta, tales como válvulas de bola, mariposa y enchufe en ambientes altamente corrosivos, como plataformas o buques en alta mar.

Las superficies de unión de los actuadores están diseñadas según ISO 5211 y VDI / VDE 3845. El diseño del actuador está construido de acuerdo con las normas ISO9001: 2008, IEC 61508: 2010, LOM 05ATEX6032 y Directiva Europea de Equipos a Presión 97/23 / EC 3.10.

Los actuadores son certificados según ATEX y GOST y fabricados bajo las normas ISO9001: 2008 con la política de mejora continua.


Standard Actuator Scope

Double Acting Spring Return
Torque: 5000 Nm 1800 Nm
Working pressure: 1 to 10 bar 3 to 10 bar
Air supply: Air or non corrosive gas
Working temperature: From -20 to +80ºC
Rotation: 90 degrees anticlockwise in opening
Ajustments: +/- 0,5ºC to open +/-0,5ºC to close
Lubrication: Actuators lubricated for life


Technical Data

Ductile iron body, covers and piston made of nodular ductile iron GGG40
  Linking surfaces according ISO 5211 and VDI/VDE 3845
  Air connections according VDI/VDE 3845
  Drive shaft with square ISO 5211
  All components have high resistance to corrosion
  All models have a double opening and closing regulation from the outside
  Multiple combination springs allow a wide range of torques for one model
  All springs have a preloader, increasing safety
  All models are easily convertible from spring return to double acting and vice versa



Inner cylinder has been completely honey treated to obtain 0,3 – 0,4 mic. rugosity
  Shaft and pistons are completely machined
  Body and shaft completely hard anodized
  Shaft has an anti-ejection retaining ring
  Double sealing at the top and bottom of the shaft
  Large PTFE sliding guide in the pistons
  Large thickness of the walls of actuator to increase durability
  Electrolytic nickel to the shaft
  Travel stop of the actuators located in the axis of the actuator


Versiones de baja temperatura hasta -65ºC
Alta temperatura hasta + 180ºC
Actuadores niquelados
Eje de accionamiento de acero inoxidable
Actuadores de cierre rápidos
Actuadores accionados con gas natural, gas agrio, oxígeno, etc, etc …
Revestimiento especial para ambientes altamente corrosivos
Juntas tóricas y kits de reparación de muelles
 Low temperature versions up to -65ºC
 High temperature up to +180ºC
  Nickel plated actuators
 Stainless Steel drive shaft
 Fast closing time actuators
 Actuators driven with Natural Gas, Sour Gas, Oxygen, etc, etc…
 Special coating for high corrosive environments
 O-rings and spring repair kits

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