DAD / DAF
The transmission of push in rotary motion takes place via two opposing pistons which are guided through the guide tubes. The toothed racks move a pinion located between the flanks
By 90°. In addition to the 0° and 90° stand function, the desired dosing position of the valve is set on site during the mounting of the AMG quater-turn actuator and reproduced exactly at each switching.
In the AMG type DAD quater-turn actuator, this is realized by means of two dosing pistons which are loaded with control medium. During the actuation of the intermediate position, the mechanical stops are pressed via the metering pistons onto the pistons which are loaded with control medium in the inner chamber and bring the valve into the desired position.
With the AMG type DAF quater-turn actuator, the built-in springs cause the automatic closing of the actuators in the event of a control pressure failure.
AMG type DAD / DAF quater-turn actuators have their excellent suitability, e.g. In the case of coarse and fine dosing of automatic valve systems, and can be modified as required by the addition of feedback units, control valves and valves.
Technical specifications:
Design: Double-Pneumatic piston actuator
Construction characteristic: rack-pinion principle, lead management piston rods
Swivel angle: 90 °
Control pressure: min. 2, max. 8 bar,
Control medium: filtered, dry air or any non-aggressive, gaseous media
Ambient temperature: -25 ° C to +80 ° C
Mounting Position: Any
Corrosion resistance: interior and exterior (industrial atmosphere)
Lubrication: Continuous lubrication with grease to DIN 51825-K2K-30
Seals: Nitrile O-rings, 70 Shore
Surface: Casing: Hard-anodized; Lid: KTL
Inspection Maintenance:
The AMG-Pesch-turn actuator type DAD / DAF requires no maintenance. Prerequisites for this are the proper construction of the drive and a properly prepared tax medium. Due to operational circumstances may verschleißfördernder long time to exchange the seals and re-lubrication will be necessary.