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Automation & Control: Pneumatic actuators

10/11/2016

Characteristics of the actuators

Pneumatic actuators with rack and pinion quarter turn (90º).

The whole actuator series has been projected according to the standard NAMUR, VDI/VDE 3845 and ISO 5211.

They can be operated with compressed air or any other non-corrosive gases under pressure of 8 and 10 bars according to the model.

Type of actuators

D.A.

• Double acting • Air pressure for opening and closing

S.R.

• Spring Return NA • Air pressure for closing valve • Normal open • Return to open position with springs

S.R.

• Spring Return NC • Air pressure for opening valve • Normal closed • Return to closed position with springs

Actuator models

GN / GN-S. Extruded aluminium ASTM 6005 with all internal and external surfaces anodized for corrosion resistance. Except for Mod. GN10 and GN 10/S. Technopolymer construction with aluminium end. Pressure from 4 to 10 bar. Temperature from -20ºC to +80ºC.

GNP / GNP-S. Aluminium alloy body and caps with all anodized surface and external surface with powder polyester painted for corrosion resistance. Working pressure from 2.5 to 8 bar. Working temperature -20ºC + 80ºC.

ATEX certification according. To 94/ 9/ CE for explosives atmospheres: Class II2 GDT5 (Zones 1,2/ 21, 22).

Important

The actuator / valve equipment that we present in our Catalogue are suitable for the following working conditions:

Clean, non-aggressive liquids. Differential pressure max. 16 kg/cm2. Minimum feed pressure: 6 bar. For other working conditions, please contact us. Safety devices -

Optional Manual emergency control.

3 and 5 way “Namur” solenoid valve IP-65. Microswitches (Electromechanical- Inductive). Pneumatic positioners, signal 3-15 psi. Electropneumatic positioners, signal 4-20 mA.

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