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Petras actuators are available with all kind of standard or special accessories like:

• Valve mounting kit according ISO 5211 and non standard pattern
• Limit switches
• Solenoid valves and control panels
• Positioners
• Manual override
• Valve actuator assembly consignment and interlocks


Valve and ancillaries mounting kits

Petras is manufacturing actuators and mounting kits since 1966.
We have a large experience in developing standard ISO 5211 kits and different type of mounting kits for special valve assemblies or ancillaries.

Limit switches and limit switch boxes

All brand and all type of limit switches and limit switch boxes are available:

• Weather proof limit switch boxes
• Weather proof proximity switches and mechanical switches
• ATEX intrinsically safe (Ex i) proximity switches
• ATEX explosion proof (Ex d) mechanical switches
• ATEX explosion proof (Ex d – Ex ed) switch boxes

Solenoid valves and control systems

Body ported solenoid valve or NAMUR mounted solenoid valve and standard accessories like filter regulator, check valve, manual valve etc… are available in both weather proof and ATEX version.

We also develop and supply complex control systems according to customer specifications and requirements.

Positioners, boosters, quick action systems

Petras actuators are also suitable for control applications. The exclusive rack and pinion system is particularly accurate and allows efficient positioning without gap.

Positioners can be combined with boosters, emergency SOV’s and quick action systems for typical applications like compressor anti-surge valves or control valve with emergency quick closing feature.

Lockouts and interlocks systems
  • Lockouts and padlock systems

  • Interlocks safety systems 

Emergency manual override
Manual override jackscrew with handwheel (side mounted) – single acting actuator Gear unit – single acting actuator

Hydraulic manual override – single acting actuator
Declutchable gear – double acting actuator 

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