Direct Gas AVAMO ASG

The Actuator

Our AVAMO ASG Direct Gas actuators are designed to directly use the existing pipeline pressure and work with natural sweet and sour gas. The ASG is based on our field-proven scotch-yoke actuators and adapted to its unique working environment. Its design ensures optimal performance to operate ball, butterfly and plug valves even in the harshest environmental conditions.

The actuator is designed for longevity, ensured by bronze slide blocks and nickel or Ionit Ox plated cylinders. Chromium plated rods and custom paint jobs provide an excellent protection against corrosion.

AVAMO ASG actuators have a modular design and can be equipped with several options. The actuator is available as single- or double acting version and can be used for on/off or modulating applications. NTF also applies a spring cylinder for emergency-shut-down-applications if necessary. The cylinder can be fitted on both sides of the actuator to either create a fail-close or fail-open configuration.

Customer Benefits

  • State of the art actuators for critical infrastructure
  • Best quality made in Germany
  • Exceptional reliability because of high-end processing
  • Constant performance even in the harshest environments
  • Our adaptable designs adjust to your specific applications


Symmetric or canted Scotch Yoke lever

Control pressure
Natural Gas up to 200 bar

up to 600.000 Nm

Temperature range
-30° - +110°C (standard)
-40° - +60°C (low temp)
-60° - +60°C (extreme temp)
0° - +160°C (high temp)

Centre Body
Maintenance free, corrosion protected, welded construction

Cylinder with nickel, chromium or Ionit Ox plated running surfaces against corrosion providing a long lifetime for gaskets

Double- or single acting

End Stops
Adjustable leak free end stops +/- 5°

Available Options

  • Manual emergency override
  • Sour gas version etc.

Stroking times
< 0,3 seconds


  • ATEX 2014/34/EU
  • PED 2014/68/EU
  • Applicable up to SIL 3 as per 61508
  • Machine directives 2006/42/EG
  • TR-TS approval